treatments-xml/data/03/8A/56/038A56761DB9FF7DFC8F90F5FF3E5341.xml

<document id="3AA36BE9B23738349EA1CE8975A38F2C" ID-DOI="10.5252/geodiversitas2024v46a6" ID-ISSN="1638-9395" ID-Zenodo-Dep="11106598" ID-ZooBank="urn:lsid:zoobank.org:pub:6ACF6A79-9149-4781-808D-478668673EB6" IM.bibliography_approvedBy="juliana" IM.illustrations_approvedBy="juliana" IM.materialsCitations_approvedBy="juliana" IM.metadata_approvedBy="juliana" IM.tables_approvedBy="juliana" IM.taxonomicNames_approvedBy="juliana" IM.treatments_approvedBy="juliana" checkinTime="1714640714399" checkinUser="plazi" docAuthor="Scavezzoni, Isaure, Fischer, Valentin, Johnson, Michela M. &amp; Jouve, Stéphane" docDate="2024" docId="038A56761DB9FF7DFC8F90F5FF3E5341" docLanguage="en" docName="geodiversitas.2024.46.6.pdf" docOrigin="Geodiversitas 46 (6)" docSource="https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a6.pdf" docStyle="DocumentStyle:F830B10FF475E64C1F1601E3B32DDC00.4:Geodiversitas.2018-.journal_article" docStyleId="F830B10FF475E64C1F1601E3B32DDC00" docStyleName="Geodiversitas.2018-.journal_article" docStyleVersion="4" docTitle="Dyrosaurus maghribensis Jouve, Iarochene, Bouya &amp; Amaghzaz 2006" docType="treatment" docVersion="5" lastPageNumber="271" masterDocId="FFB32E0E1D3CFFF7FFA29243FFC5576E" masterDocTitle="Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)" masterLastPageNumber="326" masterPageNumber="135" pageNumber="266" updateTime="1714735583920" updateUser="juliana" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
<mods:mods id="440CA08131E5E11A3E0B2FE01C86B1DE" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="B43C52D120B2BACFD950B0A6D5219BB4">
<mods:title id="473E2861F7E8ABA94DA99767BBCB8282">Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)</mods:title>
</mods:titleInfo>
<mods:name id="44C33A970149AC83CB34E3C200FEDFA6" type="personal">
<mods:role id="91F105CF50A154FFEAC3AF00571B58AB">
<mods:roleTerm id="367B72CDB9E61911E3F4D02685C681BC">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="5A5A1DF079D7E861A48C89FD0D67529F">Scavezzoni, Isaure</mods:namePart>
<mods:affiliation id="52BD57A25A319282EF53A5C7CC9ABD3C">Universite de Liège, Evolution and Diversity Dynamics Lab, All. du Six Août 14, 4000 Liège (Belgique) isaure. scavezzoni @ gmail. com v. fischer @ uliege. be</mods:affiliation>
<mods:nameIdentifier id="CE0E79E655FB0D0175EA41874898F2FB" type="email">isaure.scavezzoni@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name id="901F170D25827AC9164CC51D90E48C72" type="personal">
<mods:role id="78E835F0A4F59E6D0203E59CB5C2F524">
<mods:roleTerm id="C15D4830BBCC33429A3D5A8B7044335C">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="7344C75B46638367394BED15EA02625B">Fischer, Valentin</mods:namePart>
<mods:affiliation id="22206E078670731EF72AD54089ABFB6A">Universite de Liège, Evolution and Diversity Dynamics Lab, All. du Six Août 14, 4000 Liège (Belgique) isaure. scavezzoni @ gmail. com v. fischer @ uliege. be</mods:affiliation>
<mods:nameIdentifier id="D48CD22CCA48241CB435EDAF491D5879" type="email">v.fischer@uliege.be</mods:nameIdentifier>
</mods:name>
<mods:name id="DE9BBE5A4E0C45AA5A1322A160B0B16F" type="personal">
<mods:role id="271F0794D53B20C15076A51202CC334B">
<mods:roleTerm id="F2EFC5ED1E3F717E985CD73B7A16B6B1">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="DA82C6281CFA2994DDCF9BE33BB50996">Johnson, Michela M.</mods:namePart>
<mods:affiliation id="FF76C2FFDC5B49951550AE2D6684B61A">Department of Palaeontology, Staatliches Museum für Naturkunde Stuttgart, Museum am LÖwentor, Rosenstein 1, 70191 Stuttgart (Germany) michela. johnson @ smns-bw. de</mods:affiliation>
<mods:nameIdentifier id="F0EF74D802821943E77FEBD8B729AEBE" type="email">michela.johnson@smns-bw.de</mods:nameIdentifier>
</mods:name>
<mods:name id="EED0CEFF3610293D42AA082530774E94" type="personal">
<mods:role id="6535D1B20E8AB2B2E73AF1D09686AA0D">
<mods:roleTerm id="8ACF3094CD081BF9A94652D562624381">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="05E6AD60D580A32C6EB8F4EC0353D4A2">Jouve, Stéphane</mods:namePart>
<mods:affiliation id="5D346EDDC47A7239A6CF81F21A03045F">Sorbonne Universite, BUPMC - Pôle Collections, Tour Zamansky, 15 étage, bureau 1513, 4 place Jussieu, 75252 Paris Cedex 05 (France) stephane. jouve @ sorbonne-universite. fr</mods:affiliation>
<mods:nameIdentifier id="C2E0CC7407F2A9EF14DC0BB1D9158F05" type="email">stephane.jouve@sorbonne-universite.fr</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource id="793FFEF915B044044D9602B6DDF19C8A">text</mods:typeOfResource>
<mods:relatedItem id="AA2BE76DB46E06263367C82BA3D1BF5B" type="host">
<mods:titleInfo id="0B15A4D8507C227C1371D2E42A585C22">
<mods:title id="11220288FFD38C3EC24B741388410942">Geodiversitas</mods:title>
</mods:titleInfo>
<mods:part id="C9F6E046ACAB79453CAEA453E9EACB1C">
<mods:date id="A6FB9654D91D03A7DD84E5FEEAC7F04C">2024</mods:date>
<mods:detail id="AA4DFF46916060DC301F35FC500AB76E" type="pubDate">
<mods:number id="6D9A42076D9CADF2C28D3888EA07D624">2024-05-02</mods:number>
</mods:detail>
<mods:detail id="6C91AEA3F771E2C5213B4B89C91F6F64" type="volume">
<mods:number id="D5BF009862A71856526EEC8B023D0552">46</mods:number>
</mods:detail>
<mods:detail id="E5F421D34BA9F0A2BD49EC6FF62B791B" type="issue">
<mods:number id="7B82199E19BA989C654F3F576E4B39A8">6</mods:number>
</mods:detail>
<mods:extent id="1FF62B15B6098F30C8ABD381E8855817" unit="page">
<mods:start id="402746F4841316697CADBDEB1B6A574B">135</mods:start>
<mods:end id="ABB6DCD4EAFAF625D937381412D73209">326</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location id="BE47C81D4ABB01F1A11D5E3444A7416C">
<mods:url id="C62D8D52EB6FA5F49AA4599EA44063B0">https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a6.pdf</mods:url>
</mods:location>
<mods:classification id="55465C725003990B78A4A7540AFC0197">journal article</mods:classification>
<mods:identifier id="2A2D55955903B4734A0A76DB42BC56E3" type="DOI">10.5252/geodiversitas2024v46a6</mods:identifier>
<mods:identifier id="49255D0CCF7CDBAAE2A1B1E89F32B0B2" type="ISSN">1638-9395</mods:identifier>
<mods:identifier id="AD3D64954302D165557B197759AC2AB8" type="Zenodo-Dep">11106598</mods:identifier>
<mods:identifier id="B3A66F7BA15AD0BAA6500953D265D298" type="ZooBank">urn:lsid:zoobank.org:pub:6ACF6A79-9149-4781-808D-478668673EB6</mods:identifier>
</mods:mods>
<treatment id="038A56761DB9FF7DFC8F90F5FF3E5341" ID-DOI="http://doi.org/10.5281/zenodo.11106724" ID-Zenodo-Dep="11106724" LSID="urn:lsid:plazi:treatment:038A56761DB9FF7DFC8F90F5FF3E5341" httpUri="http://treatment.plazi.org/id/038A56761DB9FF7DFC8F90F5FF3E5341" lastPageId="138" lastPageNumber="271" pageId="133" pageNumber="266">
<subSubSection id="C339B4EB1DB9FF72FC8F90F5FC335581" pageId="133" pageNumber="266" type="nomenclature">
<paragraph id="8B9CE7601DB9FF72FC8F90F5FC335581" blockId="133.[813,1444,694,784]" pageId="133" pageNumber="266">
<taxonomicName id="4C239CE31DB9FF72FC8F90F5FC335581" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="316" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FC8F90F5FB8B55A0" box="[813,1102,694,719]" italics="true" pageId="133" pageNumber="266">
<smallCapsWord id="8D7A71BC1DB9FF72FC8F90F5FC7655A0" baselines="713,713" box="[813,947,694,719]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Dyrosaurus" pageId="133" pageNumber="266">DYROSAURUS</smallCapsWord>
<smallCapsWord id="8D7A71BC1DB9FF72FC1990F8FB8B55A0" baselines="713" box="[955,1102,699,718]" lowerCaseFontSize="8" mainFontSize="11" normCase="lower" normString="maghribensis" pageId="133" pageNumber="266">MAGHRIBENSIS</smallCapsWord>
</emphasis>
(
<bibRefCitation id="EFB29A911DB9FF72FBFF90F5FC2B5581" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." pageId="133" pageNumber="266" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
<smallCapsWord id="8D7A71BC1DB9FF72FBFF90F5FB6655A0" baselines="713,713" box="[1117,1187,694,720]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Jouve" pageId="133" pageNumber="266">JOUVE</smallCapsWord>
, 
<smallCapsWord id="8D7A71BC1DB9FF72FB1390F5FAEB55A1" baselines="713,714" box="[1201,1326,694,720]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Iarochene" pageId="133" pageNumber="266">IAROCHÈNE</smallCapsWord>
, 
<smallCapsWord id="8D7A71BC1DB9FF72FA9E90F5FA4355A0" baselines="713,713" box="[1340,1414,694,720]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Bouya" pageId="133" pageNumber="266">BOUYA</smallCapsWord>
&amp; 
<smallCapsWord id="8D7A71BC1DB9FF72FC8F9095FC625580" baselines="745,745" box="[813,935,726,752]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Amaghzaz" pageId="133" pageNumber="266">AMAGHZAZ</smallCapsWord>
, 2006
</bibRefCitation>
)
</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection id="C339B4EB1DB9FF7DFC8F90B5FF3E5341" lastPageId="138" lastPageNumber="271" pageId="133" pageNumber="266" type="description">
<paragraph id="8B9CE7601DB9FF72FC8F90B5FB59547E" blockId="133.[813,1444,694,784]" box="[813,1180,757,784]" pageId="133" pageNumber="266">
For measurements, see 
<tableCitation id="C6A1D2DB1DB9FF72FB8790B6FB505461" box="[1061,1173,757,784]" captionStart-0="TABLE" captionStart-1="TABLE" captionStart-2="TABLE" captionStartId-0="19.[61,72,462,479]" captionStartId-1="25.[61,72,457,474]" captionStartId-2="29.[61,72,511,528]" captionTargetPageId-0="19" captionTargetPageId-1="25" captionTargetPageId-2="29" captionText-0="TABLE 7. — List of measurements in mm of crocodyliformes ilia. Abbreviations: Ha, anterior height; Hv, ventral length; Hd, dorsal length; PST.l, postacetabular process anteroposterior length; PST.h, postacetabular process dorsoventral height; PRE.l, preacetabular process anteroposterior length; PRE.h, preacetabular process dorsoventral height; ACE.h, acetabulum dorsoventral height; ACE.w, acetabulum width at mid-height; GAP.w, base length of acetabular perforation; GAP.h, max height of acetabular perforation; PUB.l, pubic peduncle anteroposterior length; PUB.h, pubic peduncle dorsoventral height; ISC.l, ischial peduncle anteroposterior length; ISC.h, Ischial peduncle dorsoventral height." captionText-1="TABLE 8. — List of measurements in mm of crocodyliformes ischia. When measurements are missing on the first ischium, it takes measurements from next ischium. NHMUK PV R 4763 shaft reconstructed.Abbreviations: Hd, total height from posterior peduncle to tip of posterior process; PP.h, height of posterior process tip; AP.h, base height of anterior process; AP.w, total length of anterior process; BL.l, total length of ischial blade; GAP.w, base length of acetabular perforation; GAP.h, max height of acetabular perforation;PPed.Ll, anteroposterior length of posterior peduncle taken laterally;PPed.Wa, mediolateral width of posterior peduncle taken anteriorly; BR.l, total length of peduncle bridge; APed.w, mediolateral width of anterior peduncle; APed.h, dorsoventral height of anterior peduncle; Arch.l, anterior arch length from anterior peduncle to anterior process; Arch.h, maximal depth between base arch and bone margin; S, length from proximal extremity to maximal constriction; C, anteroposterior width of constriction." captionText-2="TABLE 9. — List of measurements in mm of crocodyliformes pubes. When measurements are missing on the first bone, it takes measurements from the next one. SMNS 81608 has been reconstructed. Abbreviations: H, total proximodistal height; Wh, mediolateral width at mid length; Ldia, length of diaphysis; Lbl, freehand length of distal blade up to diaphysis; Dbl, distance between both medial and lateral extremities of distal blade; Wprox, anteroposterior width of proximal peduncle; Lprox, mediolateral length of proximal peduncle; Shaft, proximodistal length of shaft; Neck, proximodistal length of neck; C, anteroposterior width of constriction; Arch.l, anterior arch length from peduncle to pubic diaphysis; Arch.h, maximal depth between base arch and bone margin; Arch.d, distance between proximal base of arch and position of max depth along the arch." httpUri-0="http://table.plazi.org/id/DF5CB7E81D2FFFE4FF9F938DFDDF554D" httpUri-1="http://table.plazi.org/id/DF5CB7E81D25FFEEFF9F938AFAB1555A" httpUri-2="http://table.plazi.org/id/DF5CB7E81D21FFEAFF9F93BCF8FE553A" pageId="133" pageNumber="266" tableUuid-0="DF5CB7E81D2FFFE4FF9F938DFDDF554D" tableUuid-1="DF5CB7E81D25FFEEFF9F938AFAB1555A" tableUuid-2="DF5CB7E81D21FFEAFF9F93BCF8FE553A">Tables 7-9</tableCitation>
.
</paragraph>
<paragraph id="8B9CE7601DB9FF72FC8F9176FCA25421" blockId="133.[813,871,821,847]" box="[813,871,821,847]" pageId="133" pageNumber="266">
<heading id="D0D4500C1DB9FF72FC8F9176FCA25421" box="[813,871,821,847]" fontSize="11" level="2" pageId="133" pageNumber="266" reason="8">
<emphasis id="B9573B721DB9FF72FC8F9176FCA25421" box="[813,871,821,847]" italics="true" pageId="133" pageNumber="266">Ilium</emphasis>
</heading>
</paragraph>
<paragraph id="8B9CE7601DB9FF72FC8F9116FA6A5360" blockId="133.[811,1458,853,2028]" pageId="133" pageNumber="266">
The ilium of 
<taxonomicName id="4C239CE31DB9FF72FC639115FB065401" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[961,1219,853,879]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FC639115FB065401" box="[961,1219,853,879]" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(OCP DEK-GE 252 and OCP DEK-GE 255; 
<figureCitation id="1318FBE51DB9FF72FBE79136FB5454E1" box="[1093,1169,885,911]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="133" pageNumber="266">Fig. 69</figureCitation>
) is similar to that of other dyrosaurids in possessing a well-developed postacetabular process, large peduncles, a wide acetabular perforation, and a relatively short preacetabular process. In this way 
<taxonomicName id="4C239CE31DB9FF72FAF29196FC135360" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FAF29196FC135360" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
differs from Thalattosuchia and 
<taxonomicName id="4C239CE31DB9FF72FA9291B7FA6E5360" box="[1328,1451,1012,1038]" class="Crocodylia" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="133" pageNumber="266" phylum="Chordata" rank="class">Crocodylia</taxonomicName>
.
</paragraph>
<paragraph id="8B9CE7601DB9FF72FCE19656FC365200" blockId="133.[811,1458,853,2028]" pageId="133" pageNumber="266">
<taxonomicName id="4C239CE31DB9FF72FCE19656FBFF5340" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[835,1082,1044,1070]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FCE19656FBFF5340" box="[835,1082,1044,1070]" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
specifically differs from 
<taxonomicName id="4C239CE31DB9FF72FA8D9656FC545320" authorityName="MRAC" authorityYear="1806" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB9FF72FA8D9656FC545320" italics="true" pageId="133" pageNumber="266">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB9FF72FC039676FBB65320" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[929,1139,1077,1102]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB9FF72FC039676FBB65320" box="[929,1139,1077,1102]" italics="true" pageId="133" pageNumber="266">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB9FF72FB219677FA755320" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[1155,1456,1076,1102]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB9FF72FB219677FA755320" box="[1155,1456,1076,1102]" italics="true" pageId="133" pageNumber="266">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
in displaying a wide acetabulum and a long supraacetabular crest bordering it dorsally. Moreover, the sacral rib attachment sites for the sacrals are proportionally larger in 
<taxonomicName id="4C239CE31DB9FF72FA9996D6FC7353A0" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FA9996D6FC7353A0" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
than in 
<taxonomicName id="4C239CE31DB9FF72FBB996F7FAC853A0" authorityName="MRAC" authorityYear="1806" box="[1051,1293,1204,1230]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB9FF72FBB996F7FAC853A0" box="[1051,1293,1204,1230]" italics="true" pageId="133" pageNumber="266">Congosaurus bequaerti</emphasis>
</taxonomicName>
or 
<taxonomicName id="4C239CE31DB9FF72FA9796F6FCBC5383" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB9FF72FA9796F6FCBC5383" italics="true" pageId="133" pageNumber="266">Hyposaurus natator</emphasis>
</taxonomicName>
. 
<taxonomicName id="4C239CE31DB9FF72FC259697FB4C5380" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[903,1161,1236,1262]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FC259697FB4C5380" box="[903,1161,1236,1262]" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
also stands out from other dyrosaurids in having a large and ’blunt’ preacetabular process and a relatively flat dorsal margin, that is slightly bulged in the way of 
<taxonomicName id="4C239CE31DB9FF72FC069777FB4B5223" authorityName="MRAC" authorityYear="1806" box="[932,1166,1331,1358]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB9FF72FC069777FB4B5223" box="[932,1166,1331,1358]" italics="true" pageId="133" pageNumber="266">Congosaurus bequaerti</emphasis>
</taxonomicName>
and opposed to 
<taxonomicName id="4C239CE31DB9FF72FAE19770FC295203" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB9FF72FAE19770FC295203" italics="true" pageId="133" pageNumber="266">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="8B9CE7601DB9FF72FCE19730FBC85042" blockId="133.[811,1458,853,2028]" pageId="133" pageNumber="266">
The preacetabular process of the ilium of 
<taxonomicName id="4C239CE31DB9FF72FA919737FC7152C3" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FA919737FC7152C3" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(OCP DEK-GE 252 and 255; 
<figureCitation id="1318FBE51DB9FF72FAB897D0FAA252C3" box="[1306,1383,1427,1453]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="133" pageNumber="266">Fig. 69</figureCitation>
) takes the shape of a right angle whose sides and peak are rounded, thus giving a blunt appearance to the preacetabular hook. The orientation of the preacetabular process of OCP DEK-GE 252 and 255 is not entirely clear due to its preservation state, but it appears to be mainly anterior. Comparatively, the preacetabular process of 
<taxonomicName id="4C239CE31DB9FF72FBCB9410FC5151E2" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="133" pageNumber="266" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB9FF72FBCB9410FAAA5102" box="[1129,1391,1618,1644]" italics="true" pageId="133" pageNumber="266">Dyrosaurus maghribensis</emphasis>
OCP DEK-GE
</taxonomicName>
254 (
<bibRefCitation id="EFB29A911DB9FF72FC709430FB4651E2" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." box="[978,1155,1650,1677]" pageId="133" pageNumber="266" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
Jouve 
<emphasis id="B9573B721DB9FF72FBB19430FB8051E2" box="[1043,1093,1650,1676]" italics="true" pageId="133" pageNumber="266">et al.</emphasis>
2006
</bibRefCitation>
) seems sharper and oriented anterodorsally. Also, the anterior margin of the preacetabular process of OCP DEK-GE 254 is greater than those of OCP DEK-GE 252 and 255, resulting in a shorter distance between the preacetabular hook and the pubic peduncle for OCP DEK-GE 254.
</paragraph>
<paragraph id="8B9CE7601DB9FF70FCE19572FD4D5380" blockId="133.[811,1458,853,2028]" lastBlockId="135.[130,777,215,2028]" lastPageId="135" lastPageNumber="268" pageId="133" pageNumber="266">
Laterally emerging from the preacetabular process is an oblong area culminating in the supraacetabular crest. Directly underneath the preacetabular process is a straight surface corresponding to the anterior margin of the ilium; this margin is relatively long in the case of OCP DEK-GE 252 and OCP DEK-GE 255, whereas it is shorter for OCP DEK-GE 254 (
<bibRefCitation id="EFB29A911DBBFF70FF2C929BFEF2579F" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." box="[142,311,215,242]" pageId="135" pageNumber="268" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
Jouve 
<emphasis id="B9573B721DBBFF70FF6E929BFF39579F" box="[204,252,215,241]" italics="true" pageId="135" pageNumber="268">et al.</emphasis>
2006
</bibRefCitation>
). This surface forms the junction between the preacetabular process and the pubic peduncle. In 
<taxonomicName id="4C239CE31DBBFF70FD3392BBFE70565F" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FD3392BBFECC565F" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
OCP DEK-GE
</taxonomicName>
252 and 255, the articular facet of the pubic peduncle does not significantly protrude anteriorly and remains within the extension of the anterior margin of the ilium, as in 
<taxonomicName id="4C239CE31DBBFF70FEF19334FD5456FF" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[339,657,374,401]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FEF19334FDDA56FE" box="[339,543,375,400]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
YPM VP.
</taxonomicName>
000753. In contrast, 
<taxonomicName id="4C239CE31DBBFF70FF4693D4FD4556DF" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[228,640,406,433]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FF4693D4FE1956DE" box="[228,476,406,432]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
OCP DEK-GE
</taxonomicName>
254 displays a more embossed articular facet for the pubic peduncle which make it protrude slightly anteriorly, similar to 
<taxonomicName id="4C239CE31DBBFF70FD249394FF20557E" authorityName="MRAC" authorityYear="1806" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FD249394FF20557E" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FF5693B4FDCA557E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[244,527,502,528]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FF5693B4FE05557E" box="[244,448,503,528]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
<collectionCode id="ED327FA51DBBFF70FE6A93B5FDCA557E" box="[456,527,502,528]" pageId="135" pageNumber="268">NJSM</collectionCode>
</taxonomicName>
23368, and 
<taxonomicName id="4C239CE31DBBFF70FD3E93B5FE8F555E" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FD3E93B5FE8F555E" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
. Yet the pubic peduncle of 
<taxonomicName id="4C239CE31DBBFF70FD269054FF20553E" authorityName="MRAC" authorityYear="1806" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FD269054FF20553E" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
is longer anteroposteriorly than that of 
<taxonomicName id="4C239CE31DBBFF70FD309074FECC551E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FD309074FECC551E" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DBBFF70FEBB9015FEA3551E" box="[281,358,598,624]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="135" pageNumber="268">Figs 69</figureCitation>
; 
<figureCitation id="1318FBE51DBBFF70FED69015FE55551E" box="[372,400,598,624]" captionStart="FIG" captionStartId="144.[175,186,2008,2025]" captionTargetBox="[138,1456,204,1889]" captionTargetId="figure-17@144.[146,1371,262,1859]" captionTargetPageId="144" captionText="FIG. 72. — Left ilium of Congosaurus bequaerti Dollo,1914, MRAC 1806 (holotype):A, lateral view;B, medial view.Arrow points anteriorly.Scale bar:1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106760" httpUri="https://zenodo.org/record/11106760/files/figure.png" pageId="135" pageNumber="268">72</figureCitation>
). Like many other crocodyliforms, the pubic peduncle of 
<taxonomicName id="4C239CE31DBBFF70FECF9034FDA955FE" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[365,620,630,656]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FECF9034FDA955FE" box="[365,620,630,656]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is less elevated dorsoventrally than the ischial peduncle is (e.g. 
<taxonomicName id="4C239CE31DBBFF70FD0090D5FEC455A1" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DBBFF70FD0090D5FEC455A1" italics="true" pageId="135" pageNumber="268">Mecistops cataphractus</emphasis>
</taxonomicName>
, ‘ 
<taxonomicName id="4C239CE31DBBFF70FEB690F6FCC055BE" authority="(Eudes-Deslongchamps, 1867)" authorityName="(Eudes-Deslongchamps)" authorityYear="1867" baseAuthorityName="Eudes-Deslongchamps" baseAuthorityYear="1867" box="[276,773,693,720]" class="Reptilia" family="Metriorhynchidae" genus="Metriorhynchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="brachyrhynchus">
<emphasis id="B9573B721DBBFF70FEB690F6FE7755A1" box="[276,434,693,719]" italics="true" pageId="135" pageNumber="268">Metriorhynchus</emphasis>
’ 
<emphasis id="B9573B721DBBFF70FE1F90F6FD9D55A1" box="[445,600,693,719]" italics="true" pageId="135" pageNumber="268">brachyrhynchus</emphasis>
NHMUK PV R
</taxonomicName>
3804; 
<taxonomicName id="4C239CE31DBBFF70FF659096FE1C5581" authority="(Blainville, 1853)" authorityName="(Blainville)" authorityYear="1852" baseAuthorityName="Blainville" baseAuthorityYear="1853" box="[199,473,725,751]" class="Reptilia" family="Metriorhynchidae" genus="Thalattosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="superciliosus">
<emphasis id="B9573B721DBBFF70FF659096FE1C5581" box="[199,473,725,751]" italics="true" pageId="135" pageNumber="268">Thalattosuchus superciliosus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FE469095FD025581" authorityName="MRAC" authorityYear="1806" box="[484,711,725,752]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FE469095FD025581" box="[484,711,725,752]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, etc.). Both peduncles are taller than the acetabular perforation, as in other dyrosaurids (e.g. 
<taxonomicName id="4C239CE31DBBFF70FED19155FD9C5441" authorityName="MRAC" authorityYear="1806" box="[371,601,789,816]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FED19155FD9C5441" box="[371,601,789,816]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FDC79156FF3E5421" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FDC79156FF3E5421" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
). Similar to other dyrosaurids and extant crocodylians (e.g. 
<emphasis id="B9573B721DBBFF70FEAE9116FDCF5401" box="[268,522,853,879]" italics="true" pageId="135" pageNumber="268">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DBBFF70FDBA9115FCC55401" box="[536,768,853,879]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DBBFF70FDBA9115FCC55401" box="[536,768,853,879]" italics="true" pageId="135" pageNumber="268">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FF269136FEFA54E1" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[132,319,885,911]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DBBFF70FF269136FEFA54E1" box="[132,319,885,911]" italics="true" pageId="135" pageNumber="268">Caiman crocodilus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FEE99136FDEA54E1" authorityName="MRAC" authorityYear="1806" box="[331,559,885,911]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FEE99136FDEA54E1" box="[331,559,885,911]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FD999135FCC554E1" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[571,768,886,911]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FD999135FCC554E1" box="[571,768,886,911]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FF2691D6FE6054C1" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[132,421,917,943]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FF2691D6FE6054C1" box="[132,421,917,943]" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the pubic peduncle of 
<taxonomicName id="4C239CE31DBBFF70FD0591D5FEEB54A1" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FD0591D5FEEB54A1" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is composed of two small adjoined triangles: the first one forming the anterior rim of the pubic peduncle, and the second one constituting the lateral surface of the peduncle. The latter resembles a flattened isosceles triangle oriented towards the acetabulum (i.e. posteriorly), whereas the first one appears more like a right angled triangle facing partly laterally and anteriorly, similar to other dyrosaurids and extant crocodylians (e.g. 
<emphasis id="B9573B721DBBFF70FE3796D7FD5053C0" box="[405,661,1172,1198]" italics="true" pageId="135" pageNumber="268">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DBBFF70FD0796D6FEC753A0" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DBBFF70FD0796D6FEC753A0" italics="true" pageId="135" pageNumber="268">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FEAC96F7FE0F53A0" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[270,458,1204,1230]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DBBFF70FEAC96F7FE0F53A0" box="[270,458,1204,1230]" italics="true" pageId="135" pageNumber="268">Caiman crocodilus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FE7496F7FD7953A0" authorityName="MRAC" authorityYear="1806" box="[470,700,1204,1230]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FE7496F7FD7953A0" box="[470,700,1204,1230]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FD6A96F6FEDD5383" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FD6A96F6FEDD5383" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
, and 
<taxonomicName id="4C239CE31DBBFF70FEF79697FDB25383" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[341,631,1236,1262]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FEF79697FDB25383" box="[341,631,1236,1262]" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
).
</paragraph>
<caption id="DF5CB7E81DBAFF71FF2695E8FCA25087" ID-DOI="http://doi.org/10.5281/zenodo.11106754" ID-Zenodo-Dep="11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="134" pageNumber="267" startId="134.[132,143,1963,1980]" targetBox="[146,1441,218,1865]" targetPageId="134" targetType="figure">
<paragraph id="8B9CE7601DBAFF71FF2695E8FCA25087" blockId="134.[132,1457,1963,2025]" pageId="134" pageNumber="267">
<smallCapsWord id="8D7A71BC1DBAFF71FF2695E8FF5850D5" baselines="1976,1976" box="[132,157,1963,1980]" lowerCaseFontSize="5" mainFontSize="7" normCase="title" normString="Fig" pageId="134" pageNumber="267">FIG</smallCapsWord>
. 69. — Pelvic girdle elements of 
<taxonomicName id="4C239CE31DBAFF71FE0E95E8FC3650D2" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[428,1011,1963,1980]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="134" pageNumber="267" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBAFF71FE0E95E8FDBB50D2" box="[428,638,1963,1980]" italics="true" pageId="134" pageNumber="267">Dyrosaurus maghribensis</emphasis>
<bibRefCitation id="EFB29A911DBAFF71FD2095E8FC3650D2" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." box="[642,1011,1963,1980]" pageId="134" pageNumber="267" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006</bibRefCitation>
</taxonomicName>
: 
<emphasis id="B9573B721DBAFF71FC5B95E8FBDE50D2" bold="true" box="[1017,1051,1963,1980]" pageId="134" pageNumber="267">A -C</emphasis>
, OCP DEK-GE 252; 
<emphasis id="B9573B721DBAFF71FB6795E8FB1750D2" bold="true" box="[1221,1234,1963,1980]" pageId="134" pageNumber="267">A</emphasis>
, left pubis in anterior view; 
<emphasis id="B9573B721DBAFF71FF269581FF5450BD" bold="true" box="[132,145,1986,2003]" pageId="134" pageNumber="267">B</emphasis>
, left ilium in lateral view; 
<emphasis id="B9573B721DBAFF71FEC79581FEB650BD" bold="true" box="[357,371,1986,2003]" pageId="134" pageNumber="267">C</emphasis>
, left ischium in lateral view; 
<emphasis id="B9573B721DBAFF71FDFD9581FDA850BD" bold="true" box="[607,621,1986,2003]" pageId="134" pageNumber="267">D</emphasis>
, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); 
<emphasis id="B9573B721DBAFF71FB189581FB0350BD" bold="true" box="[1210,1222,1986,2003]" pageId="134" pageNumber="267">E</emphasis>
, right pubis in anterior view (OCP DEK-GE 254). 
<emphasis id="B9573B721DBAFF71FE8D959BFEAC5087" bold="true" box="[303,361,2008,2025]" pageId="134" pageNumber="267">Target</emphasis>
indicates anterior. 
<emphasis id="B9573B721DBAFF71FDAB959BFDFA5087" bold="true" box="[521,575,2008,2025]" pageId="134" pageNumber="267">Arrow</emphasis>
points anteriorly. Scale bars: 1 cm.
</paragraph>
</caption>
<paragraph id="8B9CE7601DBBFF70FF3996B0FED75203" blockId="135.[130,777,215,2028]" pageId="135" pageNumber="268">
The pubic peduncle of the ilium of 
<taxonomicName id="4C239CE31DBBFF70FDAA96B7FCC05263" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[520,773,1267,1293]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FDAA96B7FCC05263" box="[520,773,1267,1293]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DBBFF70FF2F9750FF1E5243" box="[141,219,1299,1325]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="135" pageNumber="268">Fig. 69</figureCitation>
) is entirely separated from the ischial peduncle by the acetabular perforation, like other dyrosaurids and extant crocodylians.
</paragraph>
<paragraph id="8B9CE7601DBBFF70FF399730FB995581" blockId="135.[130,777,215,2028]" lastBlockId="135.[811,1458,215,2028]" pageId="135" pageNumber="268">
The acetabular perforation of 
<taxonomicName id="4C239CE31DBBFF70FE4B9737FD2A52E3" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[489,751,1395,1421]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FE4B9737FD2A52E3" box="[489,751,1395,1421]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is longer anteroposteriorly than it is deep dorsally; similar proportions are found for 
<taxonomicName id="4C239CE31DBBFF70FEF297F0FDFC52A3" authorityName="MRAC" authorityYear="1806" box="[336,569,1459,1485]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FEF297F0FDFC52A3" box="[336,569,1459,1485]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
(for which it is less high dorsoventrally than 
<taxonomicName id="4C239CE31DBBFF70FE249797FE3D5283" box="[390,504,1492,1517]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="genus">
<emphasis id="B9573B721DBBFF70FE249797FE3D5283" box="[390,504,1492,1517]" italics="true" pageId="135" pageNumber="268">Dyrosaurus</emphasis>
</taxonomicName>
, and 
<taxonomicName id="4C239CE31DBBFF70FD939797FD305283" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[561,757,1492,1517]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FD939797FD305283" box="[561,757,1492,1517]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
). However, 
<taxonomicName id="4C239CE31DBBFF70FF5697B0FDD95162" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[244,540,1523,1549]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FF5697B0FDD95162" box="[244,540,1523,1549]" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
strongly differs from 
<taxonomicName id="4C239CE31DBBFF70FF249450FE435142" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[134,390,1554,1580]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FF249450FE435142" box="[134,390,1554,1580]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
with its anteroposteriorly short and dorsally deep acetabular perforation. The acetabular perforation of 
<taxonomicName id="4C239CE31DBBFF70FF6D9410FE085102" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[207,461,1618,1644]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FF6D9410FE085102" box="[207,461,1618,1644]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is relatively well developed in all specimens as it reaches more than half the length of either peduncle of the ilium. In this way, the acetabular perforation of 
<taxonomicName id="4C239CE31DBBFF70FF0694F0FE6851A2" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[164,429,1714,1740]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FF0694F0FE6851A2" box="[164,429,1714,1740]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is closer to that of 
<taxonomicName id="4C239CE31DBBFF70FD2C94F0FF155182" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FD2C94F0FF155182" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
than 
<taxonomicName id="4C239CE31DBBFF70FEAF9491FE325182" authorityName="MRAC" authorityYear="1806" box="[269,503,1746,1772]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FEAF9491FE325182" box="[269,503,1746,1772]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, for which the acetabular perforation is less deep dorsoventrally. Yet, the acetabular perforation of 
<taxonomicName id="4C239CE31DBBFF70FF5F9551FE3B5042" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[253,510,1810,1836]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FF5F9551FE3B5042" box="[253,510,1810,1836]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is still distinct from that of 
<taxonomicName id="4C239CE31DBBFF70FF029571FEAC5025" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[160,361,1842,1867]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FF029571FEAC5025" box="[160,361,1842,1867]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
in being shallower dorsally. The ischial peduncle succeeds the acetabular perforation posteriorly, and forms the posterior border of the acetabulum. Contrary to the pubis peduncle, the ischial peduncle is strongly oblique so that its posterior part protrudes from the overall plane formed by the postacetabular process. In this way, the post acetabular process forms a bony barrier posteriorly, hence it was presumably the attachment site of a structure similar to the antitrochanter of extant crocodylians (
<bibRefCitation id="EFB29A911DBBFF70FB5F9354FCA1563C" author="TSAI H. P. &amp; HOLLIDAY C. M." pageId="135" pageNumber="268" pagination="1 - 30" refId="ref116719" refString="TSAI H. P. &amp; HOLLIDAY C. M. 2015. - Articular soft tissue anatomy of the archosaur hip joint: Structural homology and functional implications. Journal of Morphology 276 (6): 1 - 30. https: // doi. org / 10.1002 / jmor. 20360" type="journal article" year="2015">Tsai &amp; Holliday 2015</bibRefCitation>
). As in 
<taxonomicName id="4C239CE31DBBFF70FC139374FB0F563F" authority=", Thalattosuchia" authorityName="Thalattosuchia" box="[945,1226,311,337]" class="Crocodylia" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="135" pageNumber="268" phylum="Chordata" rank="class">Crocodylia, Thalattosuchia</taxonomicName>
and other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DBBFF70FCFB9314FBFC561F" authorityName="MRAC" authorityYear="1806" box="[857,1081,343,369]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FCFB9314FBFC561F" box="[857,1081,343,369]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FBE6931BFAC0561F" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[1092,1285,344,369]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FBE6931BFAC0561F" box="[1092,1285,344,369]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FAB39314FC6456FE" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FAB39314FC6456FE" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the lateral articular surface of the ischial peduncle of 
<taxonomicName id="4C239CE31DBBFF70FCE593D4FB8156DE" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[839,1092,406,432]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FCE593D4FB8156DE" box="[839,1092,406,432]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
resembles a tilted isosceles triangle pointing globally dorsally. This triangular lateral surface is also oriented anteriorly towards the centre of the acetabulum, mirroring the inclination of the pubic peduncle. This effect is actually emphasized by the posterior protrusion of the ischial peduncle. The ventral portion of the ischial peduncle meets with the dorsal part of the posterior peduncle of the ischium, and is slightly truncated so that the medial extremity of the ischial peduncle is more ventrally situated that the lateral one. Consequently, the lateral surface of the ischial peduncle appears like a titled triangle.
</paragraph>
<paragraph id="8B9CE7601DBBFF7FFCE190B6FE61561F" blockId="135.[811,1458,215,2028]" lastBlockId="136.[130,777,215,2028]" lastPageId="136" lastPageNumber="269" pageId="135" pageNumber="268">
The postacetabular process of 
<taxonomicName id="4C239CE31DBBFF70FB0390B5FA745461" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1185,1457,757,783]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FB0390B5FA745461" box="[1185,1457,757,783]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DBBFF70FC949156FC445441" box="[822,897,789,815]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="135" pageNumber="268">Fig. 69</figureCitation>
) is relatively small compared to other dyrosaurids as it accounts for less than half of the total length of the ilium. The ventral margin of the postacetabular process directly stems from the posterior corner of the ischial peduncle. The junction between the two appears smooth similar to that of extant crocodylians (e.g. 
<taxonomicName id="4C239CE31DBBFF70FC4F91F6FB1154A1" box="[1005,1236,949,975]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DBBFF70FC4F91F6FB1154A1" box="[1005,1236,949,975]" italics="true" pageId="135" pageNumber="268">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DBBFF70FB4291F6FA5A54A1" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[1248,1439,949,975]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DBBFF70FB4291F6FA5A54A1" box="[1248,1439,949,975]" italics="true" pageId="135" pageNumber="268">Caiman crocodilus</emphasis>
</taxonomicName>
). However, it differs from that of 
<taxonomicName id="4C239CE31DBBFF70FB2F9196FABD5480" authorityName="MRAC" authorityYear="1806" box="[1165,1400,980,1007]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FB2F9196FABD5480" box="[1165,1400,980,1007]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, and 
<taxonomicName id="4C239CE31DBBFF70FC8C91B6FC315360" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[814,1012,1013,1038]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FC8C91B6FC315360" box="[814,1012,1013,1038]" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
which display a small concave indentation between the ischial peduncle and the postacetabular process, and further differs from that of 
<taxonomicName id="4C239CE31DBBFF70FB2E9677FA755320" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[1164,1456,1076,1102]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FB2E9677FA755320" box="[1164,1456,1076,1102]" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
which possesses a large but shallow concave recess. Overall, the postacetabular process of all specimens of 
<taxonomicName id="4C239CE31DBBFF70FA9B9636FC7D53C0" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FA9B9636FC7D53C0" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is asymmetrical and appears like a beak: its ventral margin is almost exclusively concave whereas its dorsal margin is convex, thus giving a global hooked look. This effect is actually accentuated by the relative height of the postacetabular process, with those bearing a smaller process also show a more emphasized beak appearance (e.g. OCP DEK-GE 252; 
<figureCitation id="1318FBE51DBBFF70FBB89710FBBC5203" box="[1050,1145,1363,1389]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="135" pageNumber="268">Fig. 69B</figureCitation>
). Hence, the ventral margin of the postacetabular process of 
<taxonomicName id="4C239CE31DBBFF70FB319737FA5252E3" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1171,1431,1395,1421]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DBBFF70FB319737FA5252E3" box="[1171,1431,1395,1421]" italics="true" pageId="135" pageNumber="268">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is distinct from that of 
<taxonomicName id="4C239CE31DBBFF70FBB297D0FB3F52C3" authorityName="MRAC" authorityYear="1806" box="[1040,1274,1427,1453]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FBB297D0FB3F52C3" box="[1040,1274,1427,1453]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
, and 
<taxonomicName id="4C239CE31DBBFF70FA9A97D7FCBC52A3" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DBBFF70FA9A97D7FCBC52A3" italics="true" pageId="135" pageNumber="268">Hyposaurus natator</emphasis>
</taxonomicName>
for which the ventral margin shows an overall greater convexity, and also differs from 
<taxonomicName id="4C239CE31DBBFF70FB2E9790FA755283" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[1164,1456,1491,1517]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FB2E9790FA755283" box="[1164,1456,1491,1517]" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
for which the convex margin extends up to half the length of the postacetabular process. The extremity of the postacetabular process (
<figureCitation id="1318FBE51DBBFF70FC529471FB935123" box="[1008,1110,1586,1613]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="135" pageNumber="268">Fig. 69D</figureCitation>
) looks like a Lancet arch as in other dyrosaurids; indeed, the posterior-most portion of the ventral margin changes concavity to become convex in this area. The dorsal rim of the postacetabular process, known as the ’iliac crest, is entirely convex from its junction with the preacetabular process up to its posterior peak. On its lateral surface, the whole area is scarred perpendicularly to its margin which conveys the existence of a cartilaginous cap 
<emphasis id="B9573B721DBBFF70FA969551FABD5045" box="[1332,1400,1810,1835]" italics="true" pageId="135" pageNumber="268">in vivo</emphasis>
. The convexity of the dorsal margin of the postacetabular process is subtle as in 
<taxonomicName id="4C239CE31DBBFF70FC629511FB6C5005" authorityName="MRAC" authorityYear="1806" box="[960,1193,1873,1900]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FC629511FB6C5005" box="[960,1193,1873,1900]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
. Moreover, the junction between the postacetabular process and the preacetabular process is also marked by a shallow recess for OCP DEK-GE 252 and 255 like 
<taxonomicName id="4C239CE31DBBFF70FC4895F1FB1150A5" authorityName="MRAC" authorityYear="1806" box="[1002,1236,1969,1996]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DBBFF70FC4895F1FB1150A5" box="[1002,1236,1969,1996]" italics="true" pageId="135" pageNumber="268">Congosaurus bequaerti</emphasis>
</taxonomicName>
and 
<taxonomicName id="4C239CE31DBBFF70FAA995F2FC615085" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DBBFF70FAA995F2FC615085" italics="true" pageId="135" pageNumber="268">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
, and like the extant crocodylians 
<taxonomicName id="4C239CE31DBBFF7FFAB19591FF1F579F" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" lastPageId="136" lastPageNumber="269" order="Eusuchia" pageId="135" pageNumber="268" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DBBFF7FFAB19591FF1F579F" italics="true" lastPageId="136" lastPageNumber="269" pageId="135" pageNumber="268">Mecistops cataphractus</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFF4E9294FEE9579F" box="[236,300,215,241]" captionStart="FIG" captionStartId="20.[132,143,1986,2003]" captionTargetBox="[149,1433,219,1874]" captionTargetId="figure-17@20.[226,1462,231,1900]" captionTargetPageId="20" captionText="FIG. 8. — Right pelvic girdle of Mecistops cataphractus Cuvier, 1825, RBINS 18374: A, ilium in lateral view; B, ischium in lateral view; C, pubis in ventral view; D, ilium in medial view. Cross indicates posterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106616" httpUri="https://zenodo.org/record/11106616/files/figure.png" pageId="136" pageNumber="269">Fig. 8</figureCitation>
) and 
<taxonomicName id="4C239CE31DB4FF7FFED3929BFDF1579F" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[369,564,215,242]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB4FF7FFED3929BFDF1579F" box="[369,564,215,242]" italics="true" pageId="136" pageNumber="269">Caiman crocodilus</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFDE69294FD41579F" box="[580,644,215,241]" captionStart="FIG" captionStartId="21.[132,143,1986,2003]" captionTargetBox="[132,1441,166,1905]" captionTargetId="figure-15@21.[-252,1479,167,1865]" captionTargetPageId="21" captionText="FIG. 9. — Left pelvic girdle of Caiman crocodilus (Linnaeus, 1758), NHMW 30900: A, ilium in medial view; B, ilium in lateral view; C, ischium in medial view; D, ischium in lateral view; E, pubis in posterior view. Target indicates anterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106620" httpUri="https://zenodo.org/record/11106620/files/figure.png" pageId="136" pageNumber="269">Fig. 9</figureCitation>
), adding to the smooth overall profile of the iliac crest. In OCP DEK-GE 254, the junction between the postacetabular process and the preacetabular process displays a greater concavity, not unlike that of 
<taxonomicName id="4C239CE31DB4FF7FFF71931BFE58561F" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[211,413,344,369]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFF71931BFE58561F" box="[211,413,344,369]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFF399334FCC45360" blockId="136.[130,777,215,2028]" pageId="136" pageNumber="269">
The preacetabular process of 
<taxonomicName id="4C239CE31DB4FF7FFE6A9334FD0356FF" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[456,710,375,401]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFE6A9334FD0356FF" box="[456,710,375,401]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is not well preserved (
<figureCitation id="1318FBE51DB4FF7FFE9293D5FEBB56DE" box="[304,382,406,432]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
), but seems large and bulky, unlike those of extant crocodylians (e.g. 
<taxonomicName id="4C239CE31DB4FF7FFE4D93F4FD1256BE" box="[495,727,438,464]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB4FF7FFE4D93F4FD1256BE" box="[495,727,438,464]" italics="true" pageId="136" pageNumber="269">Mecistops cataphractus</emphasis>
</taxonomicName>
and 
<taxonomicName id="4C239CE31DB4FF7FFF269394FE82569E" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[132,327,470,497]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB4FF7FFF269394FE82569E" box="[132,327,470,497]" italics="true" pageId="136" pageNumber="269">Caiman crocodilus</emphasis>
</taxonomicName>
) and other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB4FF7FFD269394FF23557E" authorityName="MRAC" authorityYear="1806" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB4FF7FFD269394FF23557E" italics="true" pageId="136" pageNumber="269">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFF5493B4FE07557E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[246,450,503,528]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFF5493B4FE07557E" box="[246,450,503,528]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFE7093B5FD33557E" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[466,758,502,528]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFE7093B5FD33557E" box="[466,758,502,528]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
). Indeed, the preacetabular process of 
<taxonomicName id="4C239CE31DB4FF7FFDA49054FEED553E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFDA49054FCC0555E" box="[518,773,534,560]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
OCP DEK-GE
</taxonomicName>
252 and 255 does not sharpen anteriorly, but rather forms a rounded right angle due to its slightly convex margins. In the case of OCP DEK-GE 254, the preacetabular process appears to have been more angular than those of OCP DEK-GE 252 and 255. The area encased between the margins of the preacetabular process and the supraacetabular crest is inclined and culminates at its junction with the supraacetaular crest. The latter forms the dorsal margin of the acetabulum, and appears like a prominent arch (like that of 
<taxonomicName id="4C239CE31DB4FF7FFF279116FE625401" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[133,423,853,879]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFF279116FE625401" box="[133,423,853,879]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
) which extends as far posteriorly as the acetabulum. In 
<taxonomicName id="4C239CE31DB4FF7FFEC99136FD9654E1" authorityName="MRAC" authorityYear="1806" box="[363,595,885,911]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB4FF7FFEC99136FD9654E1" box="[363,595,885,911]" italics="true" pageId="136" pageNumber="269">Congosaurus bequaerti</emphasis>
</taxonomicName>
, and 
<taxonomicName id="4C239CE31DB4FF7FFD2C9135FF1554C1" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFD2C9135FF1554C1" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, the supraacetabular crest is not so well defined and does not extend as far back posteriorly. The supraacetabular crest of 
<taxonomicName id="4C239CE31DB4FF7FFF749196FE135480" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[214,470,980,1006]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFF749196FE135480" box="[214,470,980,1006]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
however differs from that of 
<taxonomicName id="4C239CE31DB4FF7FFF2191B7FE635360" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[131,422,1012,1038]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFF2191B7FE635360" box="[131,422,1012,1038]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
in displaying a wider concavity.
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFF399657FDC55200" blockId="136.[130,777,215,2028]" pageId="136" pageNumber="269">
The acetabulum of 
<taxonomicName id="4C239CE31DB4FF7FFED69656FDBC5340" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[372,633,1044,1070]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFED69656FDBC5340" box="[372,633,1044,1070]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFD2B9657FD125340" box="[649,727,1044,1070]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
; see 
<tableCitation id="C6A1D2DB1DB4FF7FFF249677FF215320" box="[134,228,1076,1102]" captionStart="TABLE" captionStartId="129.[131,142,219,236]" captionTargetPageId="129" captionText="TABLE 11. — List of the height and width of both the acetabulum and acetabular perforation of dyrosaurids in mm. Abbreviations: ACE, acetabulum; GAP, acetabular perforation.ACE height is taken between top of supraacetabular crest and top of GAP. ACE width is taken at mid ACE height." httpUri="http://table.plazi.org/id/DF5CB7E81DBDFF76FF219298FD90565E" pageId="136" pageNumber="269" tableUuid="DF5CB7E81DBDFF76FF219298FD90565E">Table 11</tableCitation>
) is proportionally large compared to the ilium as a whole. Also, the acetabulum of 
<taxonomicName id="4C239CE31DB4FF7FFE4C9616FD2A5300" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[494,751,1108,1134]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFE4C9616FD2A5300" box="[494,751,1108,1134]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is almost as high as it is wide, giving it a semi-spherical appearance unlike the rather elliptical appearance of other dyrosaurids. Its deepest portion seems to be located directly above the acetabular perforation, in between the pubic and ischial peduncles. In other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB4FF7FFDB696B7FCC55263" authorityName="MRAC" authorityYear="1806" box="[532,768,1267,1294]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB4FF7FFDB696B7FCC55263" box="[532,768,1267,1294]" italics="true" pageId="136" pageNumber="269">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFF269757FE885243" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[132,333,1300,1325]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFF269757FE885243" box="[132,333,1300,1325]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFEFB9750FDBF5243" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[345,634,1299,1325]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFEFB9750FDBF5243" box="[345,634,1299,1325]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the deepest point of the acetabulum appears to be located more dorsally, closer to the suparaacetabular crest.
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFF399730FA5D563F" blockId="136.[130,777,215,2028]" lastBlockId="136.[811,1457,215,337]" pageId="136" pageNumber="269">
Medially, the ilium of 
<taxonomicName id="4C239CE31DB4FF7FFE379737FD5252E3" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[405,663,1395,1421]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFE379737FD5252E3" box="[405,663,1395,1421]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
bears two distinct scars for the attachment of the sacral ribs. In OCP DEK-GE 255 (
<figureCitation id="1318FBE51DB4FF7FFE8B97F0FE4C52A3" box="[297,393,1459,1485]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69D</figureCitation>
) and OCP DEK-GE 254 (see 
<bibRefCitation id="EFB29A911DB4FF7FFD6B97F0FF395283" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." pageId="136" pageNumber="269" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
Jouve 
<emphasis id="B9573B721DB4FF7FFF269797FF7F5283" box="[132,186,1491,1517]" italics="true" pageId="136" pageNumber="269">et al.</emphasis>
2006
</bibRefCitation>
) the anterior attachment site is the largest, and covers the area extending from the pubic peduncle up until the peak of the preacetabular process. In OCP DEK-GE 255, however, the outline of the anterior attachment site differs from that of OCP DEK-GE 
<quantity id="4CDB4A851DB4FF7FFE6D9411FDDC5102" box="[463,537,1618,1645]" metricMagnitude="0" metricUnit="m" metricValue="6.451599999999999" pageId="136" pageNumber="269" unit="in" value="254.0">254 in</quantity>
resembling an asymmetrical parabola whose vertex points dorsoposteriorly. The shape of the anterior attachment site in OCP DEK-GE 254 appears more semicircular. The posterior attachment site of 
<taxonomicName id="4C239CE31DB4FF7FFF279490FE435182" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[133,390,1746,1772]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFF279490FE435182" box="[133,390,1746,1772]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is deeper than the anterior one but also more limited spatially. The overall shape of the posterior attachment site approximates that of two joined parabolas, with the upper one being the smallest. The actual anchoring site for the sacral rib was limited to the lower parabola. In OCP DEK-GE 255, the lower parabola covers half of the ischial peduncle and a similar area over the postacetabular process, whereas in OCP DEK-GE 254 the lower parabola extends over the entire ischial peduncle.The upper parabola constitutes a shallower depression dorsally to the posterior attachment site which presumably bore the ’winglet’ posterior extension of the second sacral rib similar to extant crocodylians (e.g. see 
<taxonomicName id="4C239CE31DB4FF7FFCF19374FB3B563F" authority="(Daudin, 1801)" baseAuthorityName="Daudin" baseAuthorityYear="1801" box="[851,1278,311,337]" class="Reptilia" family="Alligatoridae" genus="Alligator" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="mississippiensis">
<emphasis id="B9573B721DB4FF7FFCF19374FB89563F" box="[851,1100,311,337]" italics="true" pageId="136" pageNumber="269">Alligator mississippiensis</emphasis>
(Daudin, 1801)
</taxonomicName>
on 
<figureCitation id="1318FBE51DB4FF7FFA8A9374FA4F563F" box="[1320,1418,311,337]" captionStart="FIG" captionStartId="148.[132,143,1770,1787]" captionTargetBox="[171,1445,188,1748]" captionTargetId="figure-102@148.[191,1542,126,1729]" captionTargetPageId="148" captionText="FIG. 74. — Crocodyliformes ilia in ventral view: A, left ilium of Congosaurus bequaerti Dollo, 1914, MRAC 1806 (holotype); B, right ilium of Hyposaurus natator (Troxell, 1925),YPM VP.000753 (holotype, mirrored); C, right ilium of Alligator mississippiensis (Daudin, 1801), UF Herp 21461. Blue line corresponds to median of each pubic peduncle; red line corresponds to median of each ischial peduncle. The arrow points anteriorly. The pubic peduncle of Congosaurus bequaerti has been restored. Not to scale." figureDoi="http://doi.org/10.5281/zenodo.11106764" httpUri="https://zenodo.org/record/11106764/files/figure.png" pageId="136" pageNumber="269">Fig. 74C</figureCitation>
).
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFC8F9334FCBB56FF" blockId="136.[813,894,375,401]" box="[813,894,375,401]" pageId="136" pageNumber="269">
<heading id="D0D4500C1DB4FF7FFC8F9334FCBB56FF" box="[813,894,375,401]" fontSize="11" level="2" pageId="136" pageNumber="269" reason="8">
<emphasis id="B9573B721DB4FF7FFC8F9334FCBB56FF" box="[813,894,375,401]" italics="true" pageId="136" pageNumber="269">Ischium</emphasis>
</heading>
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFC8F93D5FAF9555E" blockId="136.[811,1457,406,2027]" pageId="136" pageNumber="269">
The ischium of 
<taxonomicName id="4C239CE31DB4FF7FFC7B93D4FB1F56DE" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[985,1242,406,432]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFC7B93D4FB1F56DE" box="[985,1242,406,432]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFB4993D5FAF256DE" box="[1259,1335,406,432]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
) resembles that of other dyrosaurids in displaying: a thick shaft; limited anterior and posterior processes (which do not protrude much beyond the peduncles); a well-developed anterior peduncle; and a twisted distal blade in relation to the shaft.
</paragraph>
<paragraph id="8B9CE7601DB4FF7FFCE19075FA985581" blockId="136.[811,1457,406,2027]" pageId="136" pageNumber="269">
Consequently, the ischium of 
<taxonomicName id="4C239CE31DB4FF7FFB039074FA74553E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1185,1457,566,592]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFB039074FA74553E" box="[1185,1457,566,592]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFC949015FC47551E" box="[822,898,598,624]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
) differs from that of other thalattosuchians in lacking: a posterior process extending beyond more than half the proximal anteroposterior length (defined by the peduncles); a reduced anterior peduncle (smaller in size than the posterior peduncle); a short shaft; a large and flat distal blade.
</paragraph>
<paragraph id="8B9CE7601DB4FF7EFCE190B6FE26567F" blockId="136.[811,1457,406,2027]" lastBlockId="137.[129,777,215,2028]" lastPageId="137" lastPageNumber="270" pageId="136" pageNumber="269">
Overall, the ischium of 
<taxonomicName id="4C239CE31DB4FF7FFB9B90B5FAFD5461" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1081,1336,757,783]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFB9B90B5FAFD5461" box="[1081,1336,757,783]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFAE590B6FA545461" box="[1351,1425,757,783]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
) is similar to that of extent crocodylians and other dyrosaurids as it displays relatively large peduncles separated by a wide acetabular perforation (e.g. 
<emphasis id="B9573B721DB4FF7FFBF99116FA995401" box="[1115,1372,853,879]" italics="true" pageId="136" pageNumber="269">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DB4FF7FFACE9115FC1954E1" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB4FF7FFACE9115FC1954E1" italics="true" pageId="136" pageNumber="269">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFC499136FB6854E1" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[1003,1197,885,911]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB4FF7FFC499136FB6854E1" box="[1003,1197,885,911]" italics="true" pageId="136" pageNumber="269">Caiman crocodilus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFB1E9136FA6D54E1" authorityName="MRAC" authorityYear="1806" box="[1212,1448,885,911]" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB4FF7FFB1E9136FA6D54E1" box="[1212,1448,885,911]" italics="true" pageId="136" pageNumber="269">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFC8F91D5FC3154C1" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[813,1012,918,943]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFC8F91D5FC3154C1" box="[813,1012,918,943]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFBA291D6FAE554C1" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[1024,1312,917,943]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFBA291D6FAE554C1" box="[1024,1312,917,943]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
). The latter is as long as its twin borne on the ilium but is slightly deeper. The total length of the proximal extremity encompassing both peduncles almost reaches the length of the distal blade of the ischium, unlike 
<taxonomicName id="4C239CE31DB4FF7FFC779656FB5B5340" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[981,1182,1045,1070]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFC779656FB5B5340" box="[981,1182,1045,1070]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
for which the distal blade exceeds the proximal extremity in size. Mediolaterally, the anterior peduncle of the ischium of 
<taxonomicName id="4C239CE31DB4FF7FFB0C9616FA6B5300" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1198,1454,1108,1134]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFB0C9616FA6B5300" box="[1198,1454,1108,1134]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is as wide as the ventral surface of the pubic peduncle of the ilium as both peduncles were connected 
<emphasis id="B9573B721DB4FF7FFB4796D6FAE853C0" box="[1253,1325,1173,1198]" italics="true" pageId="136" pageNumber="269">in vivo</emphasis>
(
<figureCitation id="1318FBE51DB4FF7FFA9F96D7FA6453C0" box="[1341,1441,1172,1198]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69D</figureCitation>
). The anterior peduncle is separated from the shaft by a narrow bridge, ventral to the acetabular perforation. More anteriorly, the anterior peduncle of the ischium expands dorsally to contact the pubic peduncle of the ilium, and ventrally to form the distinct ‘button’ or ‘knob’ (see OCP DEK-GE 
<quantity id="4CDB4A851DB4FF7FFC8C9710FCB35203" box="[814,886,1363,1390]" metricMagnitude="0" metricUnit="m" metricValue="6.451599999999999" pageId="136" pageNumber="269" unit="in" value="254.0">254 in</quantity>
<bibRefCitation id="EFB29A911DB4FF7FFCDE9717FB815203" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." box="[892,1092,1363,1390]" pageId="136" pageNumber="269" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
Jouve 
<emphasis id="B9573B721DB4FF7FFC1D9717FC365203" box="[959,1011,1363,1389]" italics="true" pageId="136" pageNumber="269">et al.</emphasis>
(2006)
</bibRefCitation>
, or 
<figureCitation id="1318FBE51DB4FF7FFBD39710FB175203" box="[1137,1234,1363,1389]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69D</figureCitation>
) for the articulation with the pubis (
<bibRefCitation id="EFB29A911DB4FF7FFC7F9737FB5352E3" author="JOUVE S. &amp; IAROCHENE M. &amp; BOUYA B. &amp; AMAGHZAZ M." box="[989,1174,1395,1422]" pageId="136" pageNumber="269" pagination="603 - 656" refId="ref113305" refString="JOUVE S., IAROCHENE M., BOUYA B. &amp; AMAGHZAZ M. 2006. - A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: Phylogenetic implications. Zoological Journal of the Linnean Society 148: 603 - 656. https: // doi. org / 10.1111 / j. 1096 - 3642.2006.00241. x" type="journal article" year="2006">
Jouve 
<emphasis id="B9573B721DB4FF7FFB829737FB9052E3" box="[1056,1109,1395,1421]" italics="true" pageId="136" pageNumber="269">et al.</emphasis>
2006
</bibRefCitation>
). Indeed, similar to other dyrosaurids and extant crocodylians (e.g. 
<emphasis id="B9573B721DB4FF7FFB4497D0FCAE52A3" italics="true" pageId="136" pageNumber="269">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DB4FF7FFCD497F7FB9F52A3" box="[886,1114,1459,1485]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB4FF7FFCD497F7FB9F52A3" box="[886,1114,1459,1485]" italics="true" pageId="136" pageNumber="269">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFBC497F0FAE752A3" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[1126,1314,1459,1485]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB4FF7FFBC497F0FAE752A3" box="[1126,1314,1459,1485]" italics="true" pageId="136" pageNumber="269">Caiman crocodilus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFA8C97F0FC4B5283" authorityName="MRAC" authorityYear="1806" class="Reptilia" family="Dyrosauridae" genus="Congosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="bequaerti">
<emphasis id="B9573B721DB4FF7FFA8C97F0FC4B5283" italics="true" pageId="136" pageNumber="269">Congosaurus bequaerti</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFC3C9797FBAF5283" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[926,1130,1492,1517]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFC3C9797FBAF5283" box="[926,1130,1492,1517]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFBD89790FA5A5283" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[1146,1439,1491,1517]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFBD89790FA5A5283" box="[1146,1439,1491,1517]" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the anterior peduncle of 
<taxonomicName id="4C239CE31DB4FF7FFBE197B0FA8D5163" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1091,1352,1523,1549]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFBE197B0FA8D5163" box="[1091,1352,1523,1549]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB4FF7FFAFA97B0FA635163" box="[1368,1446,1523,1549]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="136" pageNumber="269">Fig. 69</figureCitation>
) is well developed: its dorsoventral height accounts for more than twice its anteroposterior width (see 
<tableCitation id="C6A1D2DB1DB4FF7FFAA09471FA915123" box="[1282,1364,1586,1613]" captionStart="TABLE" captionStartId="25.[61,72,457,474]" captionTargetPageId="25" captionText="TABLE 8. — List of measurements in mm of crocodyliformes ischia. When measurements are missing on the first ischium, it takes measurements from next ischium. NHMUK PV R 4763 shaft reconstructed.Abbreviations: Hd, total height from posterior peduncle to tip of posterior process; PP.h, height of posterior process tip; AP.h, base height of anterior process; AP.w, total length of anterior process; BL.l, total length of ischial blade; GAP.w, base length of acetabular perforation; GAP.h, max height of acetabular perforation;PPed.Ll, anteroposterior length of posterior peduncle taken laterally;PPed.Wa, mediolateral width of posterior peduncle taken anteriorly; BR.l, total length of peduncle bridge; APed.w, mediolateral width of anterior peduncle; APed.h, dorsoventral height of anterior peduncle; Arch.l, anterior arch length from anterior peduncle to anterior process; Arch.h, maximal depth between base arch and bone margin; S, length from proximal extremity to maximal constriction; C, anteroposterior width of constriction." httpUri="http://table.plazi.org/id/DF5CB7E81D25FFEEFF9F938AFAB1555A" pageId="136" pageNumber="269" tableUuid="DF5CB7E81D25FFEEFF9F938AFAB1555A">Table 8</tableCitation>
), hence offering a large articular surface for the pubis as mentioned above. The presence of an extra articular area for the pubis being almost similar to a peduncle on the ventral side of the articular surface of the anterior peduncle of the ischium is a characteristic of 
<taxonomicName id="4C239CE31DB4FF7FFC579491FB4C5182" authorityName="de Stefano" authorityYear="1903" box="[1013,1161,1746,1772]" class="Reptilia" family="Dyrosauridae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="family">Dyrosauridae</taxonomicName>
, and is not found in either 
<taxonomicName id="4C239CE31DB4FF7FFC8C94B1FC6F5062" box="[814,938,1778,1804]" class="Crocodylia" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="136" pageNumber="269" phylum="Chordata" rank="class">Crocodylia</taxonomicName>
(e.g. 
<emphasis id="B9573B721DB4FF7FFC4E94B1FB3C5062" box="[1004,1273,1778,1804]" italics="true" pageId="136" pageNumber="269">Palaeosuchus palpebrosus</emphasis>
RVC-JRH-PP1 [
<figureCitation id="1318FBE51DB4FF7FFC949551FCB35042" box="[822,886,1810,1836]" captionStart="FIG" captionStartId="18.[132,143,1963,1980]" captionTargetBox="[169,1453,184,1914]" captionTargetId="figure-17@18.[296,1243,221,1867]" captionTargetPageId="18" captionText="FIG. 7. — Snapshot of the pelvic girdle of the alligatoroid Palaeosuchus palpebrosus (Cuvier, 1807), RVC-JRH-PP1: A, in anterior view; B, in lateral view. Note the orientation of the pubes. Cross indicates posterior view. Arrow points anteriorly. CT scan courtesy of Professor John Hutchinson (see https://skfb.ly/6ByyV). Scale bars: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.11106614" httpUri="https://zenodo.org/record/11106614/files/figure.png" pageId="136" pageNumber="269">Fig. 7</figureCitation>
], 
<taxonomicName id="4C239CE31DB4FF7FFC329551FBBB5042" box="[912,1150,1810,1836]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB4FF7FFC329551FBBB5042" box="[912,1150,1810,1836]" italics="true" pageId="136" pageNumber="269">Mecistops cataphractus</emphasis>
</taxonomicName>
[
<figureCitation id="1318FBE51DB4FF7FFB329551FB145042" box="[1168,1233,1810,1836]" captionStart="FIG" captionStartId="20.[132,143,1986,2003]" captionTargetBox="[149,1433,219,1874]" captionTargetId="figure-17@20.[226,1462,231,1900]" captionTargetPageId="20" captionText="FIG. 8. — Right pelvic girdle of Mecistops cataphractus Cuvier, 1825, RBINS 18374: A, ilium in lateral view; B, ischium in lateral view; C, pubis in ventral view; D, ilium in medial view. Cross indicates posterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106616" httpUri="https://zenodo.org/record/11106616/files/figure.png" pageId="136" pageNumber="269">Fig. 8</figureCitation>
], 
<taxonomicName id="4C239CE31DB4FF7FFB489551FA6A5042" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[1258,1455,1810,1836]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB4FF7FFB489551FA6A5042" box="[1258,1455,1810,1836]" italics="true" pageId="136" pageNumber="269">Caiman crocodilus</emphasis>
</taxonomicName>
[
<figureCitation id="1318FBE51DB4FF7FFC979572FCB55022" box="[821,880,1841,1868]" captionStart="FIG" captionStartId="21.[132,143,1986,2003]" captionTargetBox="[132,1441,166,1905]" captionTargetId="figure-15@21.[-252,1479,167,1865]" captionTargetPageId="21" captionText="FIG. 9. — Left pelvic girdle of Caiman crocodilus (Linnaeus, 1758), NHMW 30900: A, ilium in medial view; B, ilium in lateral view; C, ischium in medial view; D, ischium in lateral view; E, pubis in posterior view. Target indicates anterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106620" httpUri="https://zenodo.org/record/11106620/files/figure.png" pageId="136" pageNumber="269">Fig. 9</figureCitation>
] or Thalattosuchia (e.g. ‘ 
<taxonomicName id="4C239CE31DB4FF7FFBCC9572FC1B5002" authority="(Eudes-Deslongchamps, 1867)" authorityName="(Eudes-Deslongchamps)" authorityYear="1867" baseAuthorityName="Eudes-Deslongchamps" baseAuthorityYear="1867" class="Reptilia" family="Metriorhynchidae" genus="Metriorhynchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="brachyrhynchus">
<emphasis id="B9573B721DB4FF7FFBCC9572FACF5025" box="[1134,1290,1841,1867]" italics="true" pageId="136" pageNumber="269">Metriorhynchus</emphasis>
’ 
<emphasis id="B9573B721DB4FF7FFAB49572FA755025" box="[1302,1456,1841,1867]" italics="true" pageId="136" pageNumber="269">brachyrhynchus</emphasis>
NHMUK PV R
</taxonomicName>
4763 [
<figureCitation id="1318FBE51DB4FF7FFB909512FBBA5002" box="[1074,1151,1873,1900]" captionStart="FIG" captionStartId="48.[132,143,1940,1957]" captionTargetBox="[150,1456,196,1900]" captionTargetId="figure-17@48.[158,1465,198,1976]" captionTargetPageId="48" captionText="FIG. 22. — Pelvic girdle elements of ‘Metriorhynchus’ brachyrhynchus (Eudes-Deslongchamps, 1867), NHMUK PV R 4763: A, left pubis in anterior view (obtained from 3D model); B, left ilium in medial view; C, left ischium in medial view; D, left ilium in lateral view; E, superimposed outlines of the ischia of NHMUK PV R 4763 and NHMUK PV R 3804. Target indicates anterior. Arrow points anteriorly. Pictures of ‘Metriorhynchus’ brachyrhynchus, NHMUK PV R 4763, copyright from The Trustees of the Natural History Museum. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106646" httpUri="https://zenodo.org/record/11106646/files/figure.png" pageId="136" pageNumber="269">Fig. 22</figureCitation>
] or 
<taxonomicName id="4C239CE31DB4FF7FFB139512FA745005" authority="(Andrews, 1909)" authorityName="(Andrews)" baseAuthorityName="Andrews" baseAuthorityYear="1909" box="[1201,1457,1873,1899]" class="Reptilia" family="Teleosauridae" genus="Lemmysuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="obtusidens">
<emphasis id="B9573B721DB4FF7FFB139512FA745005" box="[1201,1457,1873,1899]" italics="true" pageId="136" pageNumber="269">Lemmysuchus obtusidens</emphasis>
</taxonomicName>
[
<figureCitation id="1318FBE51DB4FF7FFC979532FCB850E2" box="[821,893,1905,1932]" captionStart="FIG" captionStartId="116.[132,143,1963,1980]" captionTargetBox="[138,1445,217,1863]" captionTargetId="figure-17@116.[51,1470,169,1971]" captionTargetPageId="116" captionText="FIG. 59. — Pelvic girdle elements of Lemmysuchus obtusidens (Andrews, 1909), NHMUK PV R 3168 (holotype): A, left ilium in lateral view; B, left ilium in medial view; C, left pubis in lateral view; D, left ischium in lateral view; E, left pubis in anterodorsal view; F, right ischium in lateral view; G, surimposition of both ischia (right and left) of Lemmysuchus obtusidens, NHMUK PV R 3168. Target indicates anterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106728" httpUri="https://zenodo.org/record/11106728/files/figure.png" pageId="136" pageNumber="269">Fig. 59</figureCitation>
]). Hence, the articular surface of the anterior peduncle of 
<taxonomicName id="4C239CE31DB4FF7FFCEA95D1FB8250C5" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[840,1095,1937,1963]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB4FF7FFCEA95D1FB8250C5" box="[840,1095,1937,1963]" italics="true" pageId="136" pageNumber="269">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
significantly flares out, in the way of other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB4FF7FFB9495F1FB3A50A5" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[1078,1279,1970,1995]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB4FF7FFB9495F1FB3A50A5" box="[1078,1279,1970,1995]" italics="true" pageId="136" pageNumber="269">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB4FF7FFAA995F2FC665085" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="136" pageNumber="269" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB4FF7FFAA995F2FC665085" italics="true" pageId="136" pageNumber="269">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), and is thus quite different from what is observed in extant crocodylians (e.g. 
<emphasis id="B9573B721DB5FF7EFE039294FD5E579F" box="[417,667,215,241]" italics="true" pageId="137" pageNumber="270">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DB5FF7EFD05929BFEC1567F" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB5FF7EFD05929BFEC1567F" italics="true" pageId="137" pageNumber="270">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFEB092BBFE17567F" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[274,466,247,274]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB5FF7EFEB092BBFE17567F" box="[274,466,247,274]" italics="true" pageId="137" pageNumber="270">Caiman crocodilus</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFF39935BFD245581" blockId="137.[129,777,215,2028]" pageId="137" pageNumber="270">
In extant crocodylians (e.g. 
<emphasis id="B9573B721DB5FF7EFE1A9354FD6A565F" box="[440,687,279,305]" italics="true" pageId="137" pageNumber="270">Palaeosuchus palpebrosus</emphasis>
[
<figureCitation id="1318FBE51DB5FF7EFD1F9354FD32565C" box="[701,759,279,306]" captionStart="FIG" captionStartId="18.[132,143,1963,1980]" captionTargetBox="[169,1453,184,1914]" captionTargetId="figure-17@18.[296,1243,221,1867]" captionTargetPageId="18" captionText="FIG. 7. — Snapshot of the pelvic girdle of the alligatoroid Palaeosuchus palpebrosus (Cuvier, 1807), RVC-JRH-PP1: A, in anterior view; B, in lateral view. Note the orientation of the pubes. Cross indicates posterior view. Arrow points anteriorly. CT scan courtesy of Professor John Hutchinson (see https://skfb.ly/6ByyV). Scale bars: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.11106614" httpUri="https://zenodo.org/record/11106614/files/figure.png" pageId="137" pageNumber="270">Fig. 7</figureCitation>
], 
<taxonomicName id="4C239CE31DB5FF7EFF26937BFEA2563F" box="[132,359,311,337]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB5FF7EFF26937BFEA2563F" box="[132,359,311,337]" italics="true" pageId="137" pageNumber="270">Mecistops cataphractus</emphasis>
</taxonomicName>
[
<figureCitation id="1318FBE51DB5FF7EFED69374FE6A563F" box="[372,431,311,337]" captionStart="FIG" captionStartId="20.[132,143,1986,2003]" captionTargetBox="[149,1433,219,1874]" captionTargetId="figure-17@20.[226,1462,231,1900]" captionTargetPageId="20" captionText="FIG. 8. — Right pelvic girdle of Mecistops cataphractus Cuvier, 1825, RBINS 18374: A, ilium in lateral view; B, ischium in lateral view; C, pubis in ventral view; D, ilium in medial view. Cross indicates posterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106616" httpUri="https://zenodo.org/record/11106616/files/figure.png" pageId="137" pageNumber="270">Fig. 8</figureCitation>
], 
<taxonomicName id="4C239CE31DB5FF7EFE669374FDBA563F" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[452,639,311,337]" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB5FF7EFE669374FDBA563F" box="[452,639,311,337]" italics="true" pageId="137" pageNumber="270">Caiman crocodilus</emphasis>
</taxonomicName>
[
<figureCitation id="1318FBE51DB5FF7EFD2F9374FD0D563F" box="[653,712,311,337]" captionStart="FIG" captionStartId="21.[132,143,1986,2003]" captionTargetBox="[132,1441,166,1905]" captionTargetId="figure-15@21.[-252,1479,167,1865]" captionTargetPageId="21" captionText="FIG. 9. — Left pelvic girdle of Caiman crocodilus (Linnaeus, 1758), NHMW 30900: A, ilium in medial view; B, ilium in lateral view; C, ischium in medial view; D, ischium in lateral view; E, pubis in posterior view. Target indicates anterior. Arrow points anteriorly. Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106620" httpUri="https://zenodo.org/record/11106620/files/figure.png" pageId="137" pageNumber="270">Fig. 9</figureCitation>
]), the relative dorsal expansion of the anterior peduncle compared to the posterior peduncle can be attributed to the difference in inclination between both iliac peduncles (i.e. when their ventral margins are not parallel). Conversely, the anterior peduncle of the ischium of 
<taxonomicName id="4C239CE31DB5FF7EFE649394FD13569E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[454,726,470,496]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFE649394FD13569E" box="[454,726,470,496]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
and other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB5FF7EFE2393B4FD95557E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[385,592,503,528]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFE2393B4FD95557E" box="[385,592,503,528]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFDC293B5FF3E555E" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFDC293B5FF3E555E" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
) and thalattosuchians (e.g. 
<taxonomicName id="4C239CE31DB5FF7EFDB99054FCC2555E" baseAuthorityName="Wilkinson, Young &amp; Benton" baseAuthorityYear="2008" box="[539,775,535,560]" class="Reptilia" family="Metriorhynchidae" genus="Torvoneustes" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="carpenteri">
<emphasis id="B9573B721DB5FF7EFDB99054FCC2555E" box="[539,775,535,560]" italics="true" pageId="137" pageNumber="270">Torvoneustes carpenteri</emphasis>
</taxonomicName>
or 
<taxonomicName id="4C239CE31DB5FF7EFF019074FE6E553E" authority="(Eudes-Deslongchamps, 1868)" authorityName="(Eudes-Deslongchamps)" authorityYear="1868" baseAuthorityName="Eudes-Deslongchamps" baseAuthorityYear="1868" box="[163,427,566,592]" genus="Neosteneosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="edwardsi">
<emphasis id="B9573B721DB5FF7EFF019074FE6E553E" box="[163,427,566,592]" italics="true" pageId="137" pageNumber="270">Neosteneosaurus edwardsi</emphasis>
</taxonomicName>
) never extends dorsally over the dorsal margin of the posterior peduncle of the ischium. Still, the anterior peduncle of the ischium of 
<taxonomicName id="4C239CE31DB5FF7EFDB29034FCC055FE" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[528,773,630,656]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFDB29034FCC055FE" box="[528,773,630,656]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
and dyrosaurids appears to be more expanded dorsally compared to that of thalattosuchians due to a deeper acetabular perforation, especially on the lateral side of the ischium.
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFF3990B6FD9D53C0" blockId="137.[129,777,215,2028]" pageId="137" pageNumber="270">
The peduncle bridge of the ischium of 
<taxonomicName id="4C239CE31DB5FF7EFDB790B5FEE35441" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFDB790B5FCC05461" box="[533,773,757,783]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
OCP DEK-GE
</taxonomicName>
252 and 254 are shorter and thicker than that of OCP DEK-GE 255 and other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB5FF7EFD329175FF0B5401" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFD329175FF0B5401" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFF7E9116FE385401" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[220,509,853,879]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFF7E9116FE385401" box="[220,509,853,879]" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
) and extant crocodylians (e.g. 
<emphasis id="B9573B721DB5FF7EFF1A9136FE7154E1" box="[184,436,885,911]" italics="true" pageId="137" pageNumber="270">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DB5FF7EFE629135FD6354E1" box="[448,678,885,911]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB5FF7EFE629135FD6354E1" box="[448,678,885,911]" italics="true" pageId="137" pageNumber="270">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFD109136FF2054C1" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB5FF7EFD109136FF2054C1" italics="true" pageId="137" pageNumber="270">Caiman crocodilus</emphasis>
</taxonomicName>
) on top of their short extension, which does not help in the matter, the dorsal and ventral margins of the peduncle bridge are merely concave resulting in a thick appearance.Such a short peduncle bridge in OCP DEK-GE 252 and 254 gives the impression that the anterior peduncle directly emerges from the shaft. Conversely, the 
<typeStatus id="549859C21DB5FF7EFE729677FDEA5320" box="[464,559,1076,1102]" pageId="137" pageNumber="270" type="holotype">holotype</typeStatus>
OCP DEK-GE 255 displays a consequently longer peduncle bridge (
<figureCitation id="1318FBE51DB5FF7EFD369617FD3C5300" box="[660,761,1108,1134]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="137" pageNumber="270">Fig. 69D</figureCitation>
), similar to what is observed in other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB5FF7EFD659636FEDD53C0" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFD659636FEDD53C0" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFE8496D7FD8D53C0" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[294,584,1172,1198]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFE8496D7FD8D53C0" box="[294,584,1172,1198]" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFF3996F7FD0D51A2" blockId="137.[129,777,215,2028]" pageId="137" pageNumber="270">
The posterior peduncle of 
<taxonomicName id="4C239CE31DB5FF7EFE1796F6FD7053A0" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[437,693,1204,1230]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFE1796F6FD7053A0" box="[437,693,1204,1230]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is large with its mediolateral length being equivalent to the dorsoventral height of the anterior peduncle, and robust. Also, its articular surface is truncated resulting in an additional triangular portion facing towards the acetabulum, in line with the lateral surface of the ischial peduncle of the ilium. The main articular facet of the posterior peduncle, its dorsal surface, is connected to the ilium through the ischial peduncle. Similar to other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB5FF7EFEA097F7FE0E52A3" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[258,459,1460,1485]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFEA097F7FE0E52A3" box="[258,459,1460,1485]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFE7497F0FD3252A3" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[470,759,1459,1485]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFE7497F0FD3252A3" box="[470,759,1459,1485]" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the posterior peduncle appears short and bulky due to a thick neck connecting it to the main shaft. This effect is created by the shape of the anterior and posterior margins of the neck of the posterior peduncle of 
<taxonomicName id="4C239CE31DB5FF7EFE319470FD575122" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[403,658,1586,1612]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFE319470FD575122" box="[403,658,1586,1612]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
, which are respectively concave and convex. Unlike extant crocodylians (e.g. 
<emphasis id="B9573B721DB5FF7EFF1A9431FE7151E2" box="[184,436,1650,1676]" italics="true" pageId="137" pageNumber="270">Palaeosuchus palpebrosus</emphasis>
, 
<taxonomicName id="4C239CE31DB5FF7EFE629430FD6351E2" box="[448,678,1650,1676]" class="Crocodylia" family="Crocodylidae" genus="Mecistops" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="cataphractus">
<emphasis id="B9573B721DB5FF7EFE629430FD6351E2" box="[448,678,1650,1676]" italics="true" pageId="137" pageNumber="270">Mecistops cataphractus</emphasis>
</taxonomicName>
, 
<taxonomicName id="4C239CE31DB5FF7EFD109430FF2D51C2" authority="(Linnaeus, 1758)" authorityName="Linnaeus" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" class="Crocodylia" family="Alligatoridae" genus="Caiman" kingdom="Animalia" order="Eusuchia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="crocodilus">
<emphasis id="B9573B721DB5FF7EFD109430FF2D51C2" italics="true" pageId="137" pageNumber="270">Caiman crocodilus</emphasis>
</taxonomicName>
), the posterior peduncle of dyrosaurids is slightly elevated, giving them a deeper acetabular perforation.
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFF399491FB8A54A1" blockId="137.[129,777,215,2028]" lastBlockId="137.[811,1457,215,1645]" pageId="137" pageNumber="270">
The shaft of the ischium of 
<taxonomicName id="4C239CE31DB5FF7EFE0D9490FD625182" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[431,679,1746,1772]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFE0D9490FD625182" box="[431,679,1746,1772]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB5FF7EFD149491FD3B5182" box="[694,766,1746,1772]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="137" pageNumber="270">Fig. 69</figureCitation>
) is thick, and does not significantly slim down from the bases of the peduncles, unlike 
<taxonomicName id="4C239CE31DB5FF7EFECA9551FDEA5045" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[360,559,1810,1835]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFECA9551FDEA5045" box="[360,559,1810,1835]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
and 
<taxonomicName id="4C239CE31DB5FF7EFDC69551FF3E5025" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFDC69551FF3E5025" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
. This effect is imputable to the feeble concavity and shortness of the ventral margin of the peduncle bridge of the ischium. In OCP DEK-GE 252, this effect is even more emphasized by the important convexity of the posterior margin of the neck of the posterior peduncle. Consequently, in OCP DEK-GE 252 the posterior margin of the ilium appears convex on the first half, and only becomes concave on the second half of its total dorsoventral height. In OCP DEK-GE 254 and 255, the posterior margin of the shaft is more subtlety convex (
<figureCitation id="1318FBE51DB5FF7EFBE69374FB6D563F" box="[1092,1192,311,337]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="137" pageNumber="270">
Fig. 69 
<bibRefCitation id="EFB29A911DB5FF7EFB309374FB6D563F" author="SCHWARZ D. &amp; FREY E. &amp; MARTIN T." box="[1170,1192,311,337]" pageId="137" pageNumber="270" pagination="695 - 718" refId="ref116087" refString="SCHWARZ D., FREY E. &amp; MARTIN T. 2006. - The postcranial skeleton of the Hyposaurinae (Dyrosauridae; Crocodyliformes). Palaeontology 49 (4): 695 - 718. https: // doi. org / 10.1111 / j. 1475 - 4983.2006.00563. x" type="journal article" year="2006">D</bibRefCitation>
</figureCitation>
and Jouve 
<emphasis id="B9573B721DB5FF7EFA8A937BFA9B563F" box="[1320,1374,311,337]" italics="true" pageId="137" pageNumber="270">et al.</emphasis>
2006), similar to 
<taxonomicName id="4C239CE31DB5FF7EFC36931BFB99561F" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[916,1116,344,369]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFC36931BFB99561F" box="[916,1116,344,369]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
. In parallel, the anterior margin of the ischium underneath the anterior peduncle is entirely concave in all specimens. The relative thickness of the shaft of the ilium added to shortness of the distal blade (anteroposteriorly) convey a less intense impression of flaring out of the ischium compared to 
<taxonomicName id="4C239CE31DB5FF7EFBFB93B4FAE7557E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[1113,1314,503,528]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFBFB93B4FAE7557E" box="[1113,1314,503,528]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
. As in extant crocodylians and other dyrosaurids (i.e. 
<taxonomicName id="4C239CE31DB5FF7EFB469054FA6A555E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[1252,1455,535,560]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFB469054FA6A555E" box="[1252,1455,535,560]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
and 
<taxonomicName id="4C239CE31DB5FF7EFCF89075FBBF553E" authority="Hastings, Bloch &amp; Jaramillo, 2011" authorityName="Hastings, Bloch &amp; Jaramillo" authorityYear="2011" box="[858,1146,566,592]" family="Dyrosauridae" genus="Acherontisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="guajiraensis">
<emphasis id="B9573B721DB5FF7EFCF89075FBBF553E" box="[858,1146,566,592]" italics="true" pageId="137" pageNumber="270">Acherontisuchus guajiraensis</emphasis>
</taxonomicName>
), the posterior portion of the ischium directly underneath the posterior peduncle is thicker mediolaterally than its anterior counterpart. Moreover, the section joining, in a direct line, the peduncle bridge of the ischium and the posterior process of the distal blade corresponds to the thickest part of the ischium, similar to extant crocodylians and other dyrosaurids. Hence, there is an abrupt change in thickness anteriorly to and posteriorly to this line, which emphasises it. This line also corresponds to the axis along which the rotation of the distal blade (in relation to the peduncles) occurs, so that the anterior corner of the distal blade is actually set more medially than its posterior corner (as in extant crocodylians).
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFCE19197FC0B5103" blockId="137.[811,1457,215,1645]" pageId="137" pageNumber="270">
The distal blade of the ischium only subtly protrudes posteriorly from the posterior peduncle (i.e. it does not extend over more than half of the total proximal length of the ischium) unlike thalattosuchians (e.g. 
<taxonomicName id="4C239CE31DB5FF7EFBCF9677FA4A5320" authority="(Blainville, 1853)" authorityName="(Blainville)" authorityYear="1852" baseAuthorityName="Blainville" baseAuthorityYear="1853" box="[1133,1423,1076,1102]" class="Reptilia" family="Metriorhynchidae" genus="Thalattosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="superciliosus">
<emphasis id="B9573B721DB5FF7EFBCF9677FA4A5320" box="[1133,1423,1076,1102]" italics="true" pageId="137" pageNumber="270">Thalattosuchus superciliosus</emphasis>
</taxonomicName>
or 
<taxonomicName id="4C239CE31DB5FF7EFC8F9617FBF05300" authority="(Andrews, 1909)" authorityName="(Andrews)" baseAuthorityName="Andrews" baseAuthorityYear="1909" box="[813,1077,1108,1134]" genus="Charitomenosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="leedsi">
<emphasis id="B9573B721DB5FF7EFC8F9617FBF05300" box="[813,1077,1108,1134]" italics="true" pageId="137" pageNumber="270">Charitomenosuchus leedsi</emphasis>
</taxonomicName>
). The anterior process of the distal blade is located slightly more dorsally than the posterior corner (unlike 
<taxonomicName id="4C239CE31DB5FF7EFC2396D6FB8853C0" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[897,1101,1173,1198]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFC2396D6FB8853C0" box="[897,1101,1173,1198]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
where this is more emphasised), and the margin connecting both is concave. As in other dyrosaurids but unlike thalattosuchians, the distal processes of the ischium of 
<taxonomicName id="4C239CE31DB5FF7EFC0F96B7FB765263" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[941,1203,1267,1293]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFC0F96B7FB765263" box="[941,1203,1267,1293]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB5FF7EFB6696B0FAD75263" box="[1220,1298,1267,1293]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="137" pageNumber="270">Fig. 69</figureCitation>
) are relatively blunt, and the posterior process does not exceed more than twice the size of the anterior process. Similar to 
<taxonomicName id="4C239CE31DB5FF7EFA9A9777FCBC5203" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFA9A9777FCBC5203" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
, the peak of the anterior process is oriented anteriorly whereas that of the posterior process faces another direction. However, in 
<taxonomicName id="4C239CE31DB5FF7EFC1297D7FB6952C3" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[944,1196,1427,1453]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFC1297D7FB6952C3" box="[944,1196,1427,1453]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
the peak of the posterior process appears to be oriented more posteriorly than ventrally unlike 
<taxonomicName id="4C239CE31DB5FF7EFCD59797FB875283" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[887,1090,1492,1517]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFCD59797FB875283" box="[887,1090,1492,1517]" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
. There is a difference in the shape of the processes between the specimens, with OCP DEK-GE 255 displaying a thicker anterior process and a thinner (and slightly longer) posterior one compared to those of OCP DEK-GE 252.
</paragraph>
<paragraph id="8B9CE7601DB5FF7EFC8F94D1FCA351C2" blockId="137.[813,870,1682,1708]" box="[813,870,1682,1708]" pageId="137" pageNumber="270">
<heading id="D0D4500C1DB5FF7EFC8F94D1FCA351C2" box="[813,870,1682,1708]" fontSize="11" level="2" pageId="137" pageNumber="270" reason="8">
<emphasis id="B9573B721DB5FF7EFC8F94D1FCA351C2" box="[813,870,1682,1708]" italics="true" pageId="137" pageNumber="270">Pubis</emphasis>
</heading>
</paragraph>
<paragraph id="8B9CE7601DB5FF7DFC8F94F1FEFC567C" blockId="137.[811,1457,1714,2027]" lastBlockId="138.[130,777,215,1071]" lastPageId="138" lastPageNumber="271" pageId="137" pageNumber="270">
The pubic peduncle of 
<taxonomicName id="4C239CE31DB5FF7EFB8C94F0FAF551A2" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1070,1328,1714,1740]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFB8C94F0FAF551A2" box="[1070,1328,1714,1740]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB5FF7EFAE294F1FA4851A2" box="[1344,1421,1714,1740]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="137" pageNumber="270">Fig. 69</figureCitation>
) is narrow, and its mediolateral width almost equals that of the shaft underneath it. This contrasts with that of 
<taxonomicName id="4C239CE31DB5FF7EFA9B94B0FCBC5045" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFA9B94B0FCBC5045" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
for which the shaft widens greatly to form the pubic peduncle proximally. In 
<taxonomicName id="4C239CE31DB5FF7EFB8C9572FA805025" authorityName="Hastings, Bloch, Cadena &amp; Jaramillo" authorityYear="2010" box="[1070,1349,1841,1867]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="improcerus">
<emphasis id="B9573B721DB5FF7EFB8C9572FA805025" box="[1070,1349,1841,1867]" italics="true" pageId="137" pageNumber="270">Cerrejonisuchus improcerus</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB5FF7EFAF79572FA5A5022" box="[1365,1439,1841,1868]" captionStart="FIG" captionStartId="126.[132,143,1940,1957]" captionTargetBox="[163,1441,216,1872]" captionTargetId="figure-17@126.[13,1441,238,1913]" captionTargetPageId="126" captionText="FIG. 65. — Right and left pubes of Cerrejonisuchus improcerus Hastings, Bloch,Cadena &amp; Jaramillo, 2010, UF/IGM 31: A, right pubis in anterior view; B, left pubis in anterior view; C, right pubis in posterior view; D, left pubis in posterior view; E, reconstruction of the pelvic girdle of Cerrejonisuchus improcerus in anterior view. Translucent areas represent cartilaginous structures in vivo; their reconstruction is based on the works of Tsai &amp; Holliday (2015) and Tsai et al. (2019). Target indicates anterior. Cross indicates posterior. Modified from Scavezzoni &amp; Fischer (2021). Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106746" httpUri="https://zenodo.org/record/11106746/files/figure.png" pageId="137" pageNumber="270">Fig. 65</figureCitation>
), the proximal enlargement is more subtle than in 
<taxonomicName id="4C239CE31DB5FF7EFA959511FCBD50E5" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB5FF7EFA959511FCBD50E5" italics="true" pageId="137" pageNumber="270">Hyposaurus natator</emphasis>
</taxonomicName>
and is hence more similar to 
<taxonomicName id="4C239CE31DB5FF7EFB0A9531FA6350E5" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[1192,1446,1905,1931]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFB0A9531FA6350E5" box="[1192,1446,1905,1931]" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
. For this reason, the shaft of the pubis of 
<taxonomicName id="4C239CE31DB5FF7EFB6095D1FC8650A5" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="137" pageNumber="270" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB5FF7EFB6095D1FC8650A5" italics="true" pageId="137" pageNumber="270">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
appears to display essentially straight margins laterally and medially. The shaft itself stretches from the peduncle proximally up until the distal widening, which marks the beginning of the pubic apron.
</paragraph>
<paragraph id="8B9CE7601DB6FF7DFF399354FDAF541E" blockId="138.[130,777,215,1071]" pageId="138" pageNumber="271">
Overall, the pubis of 
<taxonomicName id="4C239CE31DB6FF7DFE30935BFD58565F" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[402,669,279,305]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB6FF7DFE30935BFD58565F" box="[402,669,279,305]" italics="true" pageId="138" pageNumber="271">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB6FF7DFD0C9354FD3B565F" box="[686,766,279,305]" captionStart="FIG" captionStartId="134.[132,143,1963,1980]" captionTargetBox="[146,1441,218,1865]" captionTargetId="figure-17@134.[173,1437,196,1932]" captionTargetPageId="134" captionText="FIG. 69. — Pelvic girdle elements of Dyrosaurus maghribensis Jouve, Iarochène, Bouya &amp; Amaghzaz, 2006:A-C, OCP DEK-GE 252; A, left pubis in anterior view; B, left ilium in lateral view; C, left ischium in lateral view; D, right pelvic girdle in medial view of the holotype (OCP DEK-GE 255); E, right pubis in anterior view (OCP DEK-GE 254). Target indicates anterior. Arrow points anteriorly. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106754" httpUri="https://zenodo.org/record/11106754/files/figure.png" pageId="138" pageNumber="271">Fig. 69</figureCitation>
) appears relatively slender as its pubic apron does not flare out drastically. Indeed the lateral and medial margins of the pubis (up to the inflection point, which corresponds to the pubic symphysis medially) display a low concavity, with the medial margin being the lowest. Yet, the pubic apron of 
<taxonomicName id="4C239CE31DB6FF7DFD3093F4FECC569E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB6FF7DFD3093F4FECC569E" italics="true" pageId="138" pageNumber="271">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is proportionally larger than that of 
<taxonomicName id="4C239CE31DB6FF7DFD2D9394FF15557E" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB6FF7DFD2D9394FF15557E" italics="true" pageId="138" pageNumber="271">Hyposaurus natator</emphasis>
</taxonomicName>
(see 
<tableCitation id="C6A1D2DB1DB6FF7DFEAA93B5FE9C557E" box="[264,345,502,528]" captionStart="TABLE" captionStartId="29.[61,72,511,528]" captionTargetPageId="29" captionText="TABLE 9. — List of measurements in mm of crocodyliformes pubes. When measurements are missing on the first bone, it takes measurements from the next one. SMNS 81608 has been reconstructed. Abbreviations: H, total proximodistal height; Wh, mediolateral width at mid length; Ldia, length of diaphysis; Lbl, freehand length of distal blade up to diaphysis; Dbl, distance between both medial and lateral extremities of distal blade; Wprox, anteroposterior width of proximal peduncle; Lprox, mediolateral length of proximal peduncle; Shaft, proximodistal length of shaft; Neck, proximodistal length of neck; C, anteroposterior width of constriction; Arch.l, anterior arch length from peduncle to pubic diaphysis; Arch.h, maximal depth between base arch and bone margin; Arch.d, distance between proximal base of arch and position of max depth along the arch." httpUri="http://table.plazi.org/id/DF5CB7E81D21FFEAFF9F93BCF8FE553A" pageId="138" pageNumber="271" tableUuid="DF5CB7E81D21FFEAFF9F93BCF8FE553A">Table 9</tableCitation>
), but is more limited than that of 
<taxonomicName id="4C239CE31DB6FF7DFD7893B4FEB8555E" authorityName="Hastings, Bloch, Cadena &amp; Jaramillo" authorityYear="2010" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="improcerus">
<emphasis id="B9573B721DB6FF7DFD7893B4FEB8555E" italics="true" pageId="138" pageNumber="271">Cerrejonisuchus improcerus</emphasis>
</taxonomicName>
. Geometrically, the pubic apron of 
<taxonomicName id="4C239CE31DB6FF7DFF249074FE43553E" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[134,390,566,592]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB6FF7DFF249074FE43553E" box="[134,390,566,592]" italics="true" pageId="138" pageNumber="271">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
is quite symmetrical with the lateral margin of the bone almost mirroring the medial one. This effect is mainly due to the size and orientation of the pubic symphysis, which is relatively short and parallel to the pubic shaft. Indeed, depending on the inclination and length of the pubic symphysis, the pubic apron is subject to deflect more or less laterally as in 
<taxonomicName id="4C239CE31DB6FF7DFECC90B5FDF95461" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[366,572,758,783]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB6FF7DFECC90B5FDF95461" box="[366,572,758,783]" italics="true" pageId="138" pageNumber="271">Hyposaurus natator</emphasis>
</taxonomicName>
or 
<taxonomicName id="4C239CE31DB6FF7DFDC690B6FF315441" authorityName="Hastings, Bloch, Cadena &amp; Jaramillo" authorityYear="2010" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="improcerus">
<emphasis id="B9573B721DB6FF7DFDC690B6FF315441" italics="true" pageId="138" pageNumber="271">Cerrejonisuchus improcerus</emphasis>
</taxonomicName>
. In the case of 
<taxonomicName id="4C239CE31DB6FF7DFE379155FD505441" authority="Jouve, Iarochene, Bouya &amp; Amaghzaz, 2006" authorityName="Jouve, Iarochene, Bouya &amp; Amaghzaz" authorityYear="2006" box="[405,661,789,815]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="maghribensis">
<emphasis id="B9573B721DB6FF7DFE379155FD505441" box="[405,661,789,815]" italics="true" pageId="138" pageNumber="271">Dyrosaurus maghribensis</emphasis>
</taxonomicName>
, the pubis was positioned slightly more upright than for 
<taxonomicName id="4C239CE31DB6FF7DFD2D9175FF155401" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB6FF7DFD2D9175FF155401" italics="true" pageId="138" pageNumber="271">Hyposaurus natator</emphasis>
</taxonomicName>
, similar to 
<taxonomicName id="4C239CE31DB6FF7DFEE99116FDA15401" authorityName="Hastings, Bloch, Cadena &amp; Jaramillo" authorityYear="2010" box="[331,612,853,879]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="improcerus">
<emphasis id="B9573B721DB6FF7DFEE99116FDA15401" box="[331,612,853,879]" italics="true" pageId="138" pageNumber="271">Cerrejonisuchus improcerus</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="8B9CE7601DB6FF7DFF399136FF3E5341" blockId="138.[130,777,215,1071]" pageId="138" pageNumber="271">
Distally, the pubic apron is bordered by a convex margin, joining the pubic symphysis with the lateral margin of the bone. The junction between the lateral margin of the bone and the distal one forms a small lateral protuberance in the way of 
<taxonomicName id="4C239CE31DB6FF7DFF7A91B6FE605360" authority="(Troxell, 1925)" authorityName="(Troxell)" baseAuthorityName="Troxell" baseAuthorityYear="1925" box="[216,421,1013,1038]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="natator">
<emphasis id="B9573B721DB6FF7DFF7A91B6FE605360" box="[216,421,1013,1038]" italics="true" pageId="138" pageNumber="271">Hyposaurus natator</emphasis>
</taxonomicName>
(
<figureCitation id="1318FBE51DB6FF7DFE1491B7FDC35360" box="[438,518,1012,1038]" captionStart="FIG" captionStartId="128.[132,143,1986,2003]" captionTargetBox="[148,1445,218,1876]" captionTargetId="figure-17@128.[73,1395,232,1955]" captionTargetPageId="128" captionText="FIG. 66. — Right pelvic girdle elements of Hyposaurus natator (Troxell,1925),YPM VP.000753, holotype: A, right ilium in medial view; B, right ilium in lateral view; C, right ischium in lateral view;D, right pubis in lateral view;E, left pubis in posteroventral view.Target indicates anterior.Arrow points anteriorly.Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106748" httpUri="https://zenodo.org/record/11106748/files/figure.png" pageId="138" pageNumber="271">Figs 66</figureCitation>
; 
<figureCitation id="1318FBE51DB6FF7DFDB491B7FDF75360" box="[534,562,1012,1038]" captionStart="FIG" captionStartId="130.[132,143,1963,1980]" captionTargetBox="[140,1441,215,1875]" captionTargetId="figure-19@130.[93,1478,223,2013]" captionTargetPageId="130" captionText="FIG. 67. — Right and left pelvic girdle elements of Hyposaurus natator (Troxell,1925), NJSM 23368: A, right pubis in anterior view;B, left ilium in lateral view;C, left pubis in lateral view; D, left ischium in lateral view; E, right ilium in lateral view; F, right ilium in medial view. Target indicates anterior. Arrow points anteriorly. Pictures courtesy of Wayne Callahan. Scale bars: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106750" httpUri="https://zenodo.org/record/11106750/files/figure.png" pageId="138" pageNumber="271">67</figureCitation>
) or 
<taxonomicName id="4C239CE31DB6FF7DFDC491B7FF315340" authorityName="Hastings, Bloch, Cadena &amp; Jaramillo" authorityYear="2010" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="138" pageNumber="271" phylum="Chordata" rank="species" species="improcerus">
<emphasis id="B9573B721DB6FF7DFDC491B7FF315340" italics="true" pageId="138" pageNumber="271">Cerrejonisuchus improcerus</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>