236 lines
34 KiB
XML
236 lines
34 KiB
XML
<document id="B5A5AE276294693E895A88E938D8D8A2" 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. & Jouve, Stéphane" docDate="2024" docId="038A56761D47FF8AFC8F9035FCC05341" 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="Cerrejonisuchus improcerus HASTINGS, BLOCH, CADENA & JARAMILLO 2010" docType="treatment" docVersion="4" lastPageNumber="256" masterDocId="FFB32E0E1D3CFFF7FFA29243FFC5576E" masterDocTitle="Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)" masterLastPageNumber="326" masterPageNumber="135" pageNumber="256" updateTime="1714681770497" updateUser="ExternalLinkService" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:title id="DF67735F3CE298BDDE9A7455BFF29E69">Form and function of the pelvic girdle of Thalattosuchia and Dyrosauridae (Crocodyliformes)</mods:title>
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<mods:namePart id="39BC5F997872F30A7144149B58742FE6">Scavezzoni, Isaure</mods:namePart>
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<mods:affiliation id="BA1CC4BCE4B9AED76B89A131ACE22CE7">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>
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<mods:nameIdentifier id="9AB518023FE610A80266AA35258C3AF2" type="email">isaure.scavezzoni@gmail.com</mods:nameIdentifier>
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<mods:namePart id="7AAC6DB3976891A07A60EDC4DDF1C52C">Fischer, Valentin</mods:namePart>
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<mods:affiliation id="6BBCB909A2CAC4E2AB710DF3B0416E4D">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>
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<mods:nameIdentifier id="E913DA5F548BD0201BF5C466B08C927A" type="email">v.fischer@uliege.be</mods:nameIdentifier>
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<mods:namePart id="90529B74F85DBC08062860F22FFD3E89">Johnson, Michela M.</mods:namePart>
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<mods:affiliation id="2C07E160B0C0B1BE13E13C7C460CD1D9">Department of Palaeontology, Staatliches Museum für Naturkunde Stuttgart, Museum am LÖwentor, Rosenstein 1, 70191 Stuttgart (Germany) michela. johnson @ smns-bw. de</mods:affiliation>
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<mods:nameIdentifier id="A161BA2068D370C161A041D8DDE8704D" type="email">michela.johnson@smns-bw.de</mods:nameIdentifier>
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<mods:namePart id="F49FE9EC6BF1BB8244CE0A6A08DFC650">Jouve, Stéphane</mods:namePart>
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<mods:affiliation id="DB246D47F4D3F3CDDB4BF2D2913BE186">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>
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<mods:nameIdentifier id="CCF61BADAA87F905B82660A225D5A701" type="email">stephane.jouve@sorbonne-universite.fr</mods:nameIdentifier>
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<mods:title id="8E34025C0F9D460416F87CD9A798C314">Geodiversitas</mods:title>
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<mods:date id="280FA31DA41EE63892C3BD0BDA29977D">2024</mods:date>
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<mods:number id="3620675ABABDA4D73D3C8128BC1DFCE3">2024-05-02</mods:number>
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<mods:number id="F645F53618D0060292D8EDF407FAE206">46</mods:number>
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<mods:url id="0FB3A27602166925037D4E3621D93C5B">https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a6.pdf</mods:url>
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<mods:classification id="A0D3AD6427713E621EEB6628D87B48B4">journal article</mods:classification>
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<mods:identifier id="0EFC297678B6EAA179B3BD5E129B5B0B" type="DOI">10.5252/geodiversitas2024v46a6</mods:identifier>
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<mods:identifier id="AA40531ABF867962F3014CC3FD923974" type="ISSN">1638-9395</mods:identifier>
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<treatment id="038A56761D47FF8AFC8F9035FCC05341" ID-DOI="http://doi.org/10.5281/zenodo.11106297" ID-Zenodo-Dep="11106297" LSID="urn:lsid:plazi:treatment:038A56761D47FF8AFC8F9035FCC05341" httpUri="http://treatment.plazi.org/id/038A56761D47FF8AFC8F9035FCC05341" lastPageId="125" lastPageNumber="256" pageId="123" pageNumber="256">
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<subSubSection id="C339B4EB1D47FF8CFC8F9035FBA355DE" pageId="123" pageNumber="256" type="nomenclature">
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<taxonomicName id="4C239CE31D47FF8CFC8F9035FBA355DE" authority="HASTINGS, BLOCH, CADENA & JARAMILLO, 2010" authorityYear="2010" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="improcerus">
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<smallCapsWord id="8D7A71BC1D47FF8CFC51903FFBB755E1" baselines="650" box="[1011,1138,636,655]" lowerCaseFontSize="8" mainFontSize="11" normCase="lower" normString="improcerus" pageId="123" pageNumber="256">IMPROCERUS</smallCapsWord>
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</emphasis>
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<bibRefCitation id="EFB29A911D47FF8CFBDB9035FBA355DE" author="HASTINGS A. K. & BLOCH J. I. & CADENA E. A. & JARAMILLO C. A." pageId="123" pageNumber="256" pagination="139 - 162" refId="ref111506" refString="HASTINGS A. K., BLOCH J. I., CADENA E. A. & JARAMILLO C. A. 2010. - A new small short-snouted dyrosaurid (Crocodylomorpha, Mesoeucrocodylia) from the Paleocene of Northeastern Colombia. Journal of Vertebrate Paleontology 30 (1): 139 - 162. https: // www. jstor. org / stable / 20627159" type="journal article" year="2010">
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<smallCapsWord id="8D7A71BC1D47FF8CFBDB9035FB2255E0" baselines="649,649" box="[1145,1255,630,656]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Hastings" pageId="123" pageNumber="256">HASTINGS</smallCapsWord>
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,
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<smallCapsWord id="8D7A71BC1D47FF8CFB569035FA8455E0" baselines="649,649" box="[1268,1345,630,656]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Bloch" pageId="123" pageNumber="256">BLOCH</smallCapsWord>
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,
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<smallCapsWord id="8D7A71BC1D47FF8CFC8F90D5FC4255C0" baselines="681,681" box="[813,903,662,688]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Cadena" pageId="123" pageNumber="256">CADENA</smallCapsWord>
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&
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<smallCapsWord id="8D7A71BC1D47FF8CFC0E90D5FBE555C0" baselines="681,681" box="[940,1056,662,688]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Jaramillo" pageId="123" pageNumber="256">JARAMILLO</smallCapsWord>
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, 2010
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</bibRefCitation>
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</taxonomicName>
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</paragraph>
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<subSubSection id="C339B4EB1D47FF8AFC8F90F5FCC05341" lastPageId="125" lastPageNumber="258" pageId="123" pageNumber="256" type="description">
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<paragraph id="8B9CE7601D47FF8CFC8F90F5FB5955BE" blockId="123.[813,1352,630,720]" box="[813,1180,693,720]" pageId="123" pageNumber="256">
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For measurements, see
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<tableCitation id="C6A1D2DB1D47FF8CFB8790F6FB5055BE" box="[1061,1173,693,720]" 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="123" pageNumber="256" tableUuid-0="DF5CB7E81D2FFFE4FF9F938DFDDF554D" tableUuid-1="DF5CB7E81D25FFEEFF9F938AFAB1555A" tableUuid-2="DF5CB7E81D21FFEAFF9F93BCF8FE553A">Tables 7-9</tableCitation>
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.
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</paragraph>
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<paragraph id="8B9CE7601D47FF8CFC8F90B6FCA35461" blockId="123.[813,870,757,783]" box="[813,870,757,783]" pageId="123" pageNumber="256">
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<heading id="D0D4500C1D47FF8CFC8F90B6FCA35461" box="[813,870,757,783]" fontSize="11" level="2" pageId="123" pageNumber="256" reason="8">
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<emphasis id="B9573B721D47FF8CFC8F90B6FCA35461" box="[813,870,757,783]" italics="true" pageId="123" pageNumber="256">Pubis</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8B9CE7601D47FF8CFC8F9156FB9D5380" blockId="123.[811,1458,789,2028]" pageId="123" pageNumber="256">
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The pubis of
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<taxonomicName id="4C239CE31D47FF8CFC649156FB235441" box="[966,1254,789,815]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="improcerus">
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<emphasis id="B9573B721D47FF8CFC649156FB235441" box="[966,1254,789,815]" italics="true" pageId="123" pageNumber="256">Cerrejonisuchus improcerus</emphasis>
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</taxonomicName>
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(
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<figureCitation id="1318FBE51D47FF8CFB559156FA83545E" box="[1271,1350,789,816]" 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 & 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 & Holliday (2015) and Tsai et al. (2019). Target indicates anterior. Cross indicates posterior. Modified from Scavezzoni & Fischer (2021). Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106746" httpUri="https://zenodo.org/record/11106746/files/figure.png" pageId="123" pageNumber="256">Fig. 65</figureCitation>
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) displays a unique shape among
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<taxonomicName id="4C239CE31D47FF8CFB919176FB0F5421" authorityName="de Stefano" authorityYear="1903" box="[1075,1226,821,847]" class="Reptilia" family="Dyrosauridae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="family">Dyrosauridae</taxonomicName>
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: its slender proximal extremity coupled with its oblong distal blade bear resemblance to a hockey stick. This shape is made possible through the size and shape of its pubic symphysis, its relation with the other margins of the bone, as well as the shape of the lateral protuberance. Like other dyrosaurids, the pubis of
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<taxonomicName id="4C239CE31D47FF8CFACD9196FBCA5360" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="improcerus">
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<emphasis id="B9573B721D47FF8CFACD9196FBCA5360" italics="true" pageId="123" pageNumber="256">Cerrejonisuchus improcerus</emphasis>
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</taxonomicName>
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remains relatively narrow mediolaterally (e.g.
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<taxonomicName id="4C239CE31D47FF8CFC319656FBA45340" box="[915,1121,1045,1070]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="natator">
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<emphasis id="B9573B721D47FF8CFC319656FBA45340" box="[915,1121,1045,1070]" italics="true" pageId="123" pageNumber="256">Hyposaurus natator</emphasis>
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</taxonomicName>
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,
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<taxonomicName id="4C239CE31D47FF8CFBD39656FAB25340" box="[1137,1399,1044,1070]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="maghribensis">
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<emphasis id="B9573B721D47FF8CFBD39656FAB25340" box="[1137,1399,1044,1070]" italics="true" pageId="123" pageNumber="256">Dyrosaurus maghribensis</emphasis>
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</taxonomicName>
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, and
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<taxonomicName id="4C239CE31D47FF8CFC8C9677FBE25320" authorityName="Hastings, Bloch & Jaramillo" authorityYear="2014" box="[814,1063,1076,1102]" family="Dyrosauridae" genus="Anthracosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="balrogus">
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<emphasis id="B9573B721D47FF8CFC8C9677FBE25320" box="[814,1063,1076,1102]" italics="true" pageId="123" pageNumber="256">Anthracosuchus balrogus</emphasis>
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</taxonomicName>
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) whereas elongated proximodistally. Still, the pubis of
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<taxonomicName id="4C239CE31D47FF8CFC579617FAD55300" box="[1013,1296,1108,1134]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="improcerus">
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<emphasis id="B9573B721D47FF8CFC579617FAD55300" box="[1013,1296,1108,1134]" italics="true" pageId="123" pageNumber="256">Cerrejonisuchus improcerus</emphasis>
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</taxonomicName>
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contrasts with that of other dyrosaurids in possessing a large pubic apron (induced by a long pubic symphysis, like
|
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<taxonomicName id="4C239CE31D47FF8CFAAE96D7FC4753A0" authorityName="Hastings, Bloch & Jaramillo" authorityYear="2014" family="Dyrosauridae" genus="Anthracosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="balrogus">
|
||
<emphasis id="B9573B721D47FF8CFAAE96D7FC4753A0" italics="true" pageId="123" pageNumber="256">Anthracosuchus balrogus</emphasis>
|
||
</taxonomicName>
|
||
) coupled with a squared lateral protuberance at the extremity of its distal blade.
|
||
</paragraph>
|
||
<paragraph id="8B9CE7601D47FF8AFCE196B0FCC05341" blockId="123.[811,1458,789,2028]" lastBlockId="125.[130,777,215,1071]" lastPageId="125" lastPageNumber="258" pageId="123" pageNumber="256">
|
||
The pubic peduncle of
|
||
<taxonomicName id="4C239CE31D47FF8CFB9096B0FA835263" box="[1074,1350,1267,1293]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="improcerus">
|
||
<emphasis id="B9573B721D47FF8CFB9096B0FA835263" box="[1074,1350,1267,1293]" italics="true" pageId="123" pageNumber="256">Cerrejonisuchus improcerus</emphasis>
|
||
</taxonomicName>
|
||
is slightly wider than the pubic shaft mediolaterally, as in
|
||
<taxonomicName id="4C239CE31D47FF8CFA9E9757FC775223" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D47FF8CFA9E9757FC775223" italics="true" pageId="123" pageNumber="256">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
but as opposed to
|
||
<taxonomicName id="4C239CE31D47FF8CFBDD9777FA8C5223" box="[1151,1353,1332,1357]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D47FF8CFBDD9777FA8C5223" box="[1151,1353,1332,1357]" italics="true" pageId="123" pageNumber="256">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
. Distally, the pubic peduncle subtly slims down to form the pubic shaft (or neck). The latter ensures the junction between the pubic peduncle and the distal blade, and is identifiable through to the mediolateral widening distally which marks the start of the pubic apron. As in other dyrosaurids (i.e.
|
||
<taxonomicName id="4C239CE31D47FF8CFB5C9797FC8F5162" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D47FF8CFB5C9797FC8F5162" italics="true" pageId="123" pageNumber="256">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C239CE31D47FF8CFCF497B0FB935163" box="[854,1110,1523,1549]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D47FF8CFCF497B0FB935163" box="[854,1110,1523,1549]" italics="true" pageId="123" pageNumber="256">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
), the lateral and medial margins of the shaft are weakly concave, so that they appear almost straight. These concave margins do not stop with the shaft, but rather carry on to form portions of the pubic apron’s margins. The medial concave margin of the pubis is shorter than the lateral one, and ends where the pubic symphysis starts. The concave medial margin is also slightly deeper than the lateral concave margin of the pubis. The later, however, presents a large extension and almost forms the entirety of the lateral margin of the pubis similar to
|
||
<taxonomicName id="4C239CE31D47FF8CFB159551FA455045" box="[1207,1408,1810,1835]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D47FF8CFB159551FA455045" box="[1207,1408,1810,1835]" italics="true" pageId="123" pageNumber="256">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C239CE31D47FF8CFC8F9571FBE85025" box="[813,1069,1841,1867]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D47FF8CFC8F9571FBE85025" box="[813,1069,1841,1867]" italics="true" pageId="123" pageNumber="256">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
, but
|
||
<emphasis id="B9573B721D47FF8CFBC59571FA6D5025" box="[1127,1448,1841,1867]" italics="true" pageId="123" pageNumber="256">
|
||
contra
|
||
<taxonomicName id="4C239CE31D47FF8CFB0F9572FA6D5025" authorityName="Hastings, Bloch & Jaramillo" authorityYear="2014" box="[1197,1448,1841,1867]" family="Dyrosauridae" genus="Anthracosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="balrogus">Anthracosuchus balrogus</taxonomicName>
|
||
</emphasis>
|
||
. Distally, the lateral concave margin ends with a small lateral protuberance like those of
|
||
<taxonomicName id="4C239CE31D47FF8CFBED9531FADF50E5" box="[1103,1306,1906,1931]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D47FF8CFBED9531FADF50E5" box="[1103,1306,1906,1931]" italics="true" pageId="123" pageNumber="256">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C239CE31D47FF8CFAF29531FC1250C5" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="123" pageNumber="256" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D47FF8CFAF29531FC1250C5" italics="true" pageId="123" pageNumber="256">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
. The protuberance displays a weakly convex border laterally, whereas its dorsal and ventral margins appear relatively straight (notably due to their shortness). The lateral protuberance forms the distal corner of the pubic plate, and thus connect the strictly lateral margin of the pubis with the ventral border of the bone. The ventral margin of the pubic apron is quite straight and reaches about half of the length of the pubic symphysis, with which it forms an obtuse angle of approximately 125°. A similar value can be found in
|
||
<taxonomicName id="4C239CE31D41FF8AFD6A9334FED656DE" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D41FF8AFD6A9334FED656DE" italics="true" pageId="125" pageNumber="258">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
, whereas
|
||
<taxonomicName id="4C239CE31D41FF8AFED493D4FDB456DE" box="[374,625,406,432]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D41FF8AFED493D4FDB456DE" box="[374,625,406,432]" italics="true" pageId="125" pageNumber="258">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
displays more of a right angle between its pubic symphysis and its ventral margin. The pubic symphysis of
|
||
<taxonomicName id="4C239CE31D41FF8AFE4D9395FCCC569E" box="[495,777,470,496]" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="improcerus">
|
||
<emphasis id="B9573B721D41FF8AFE4D9395FCCC569E" box="[495,777,470,496]" italics="true" pageId="125" pageNumber="258">Cerrejonisuchus improcerus</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="1318FBE51D41FF8AFF2F93B5FF1F557F" box="[141,218,502,529]" 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 & 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 & Holliday (2015) and Tsai et al. (2019). Target indicates anterior. Cross indicates posterior. Modified from Scavezzoni & Fischer (2021). Scale bar: 1 cm." figureDoi="http://doi.org/10.5281/zenodo.11106746" httpUri="https://zenodo.org/record/11106746/files/figure.png" pageId="125" pageNumber="258">Fig. 65</figureCitation>
|
||
;
|
||
<tableCitation id="C6A1D2DB1D41FF8AFF4A93B5FEFD557E" box="[232,312,502,528]" 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="125" pageNumber="258" tableUuid="DF5CB7E81D21FFEAFF9F93BCF8FE553A">Table 9</tableCitation>
|
||
) is proportionally larger than in any other dyrosaurids (i.e.
|
||
<taxonomicName id="4C239CE31D41FF8AFE939054FE3D555E" box="[305,504,535,560]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D41FF8AFE939054FE3D555E" box="[305,504,535,560]" italics="true" pageId="125" pageNumber="258">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C239CE31D41FF8AFDA69054FCC5555E" box="[516,768,534,560]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D41FF8AFDA69054FCC5555E" box="[516,768,534,560]" italics="true" pageId="125" pageNumber="258">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
, and
|
||
<taxonomicName id="4C239CE31D41FF8AFF169075FE6A553E" authorityName="Hastings, Bloch & Jaramillo" authorityYear="2014" box="[180,431,566,592]" family="Dyrosauridae" genus="Anthracosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="balrogus">
|
||
<emphasis id="B9573B721D41FF8AFF169075FE6A553E" box="[180,431,566,592]" italics="true" pageId="125" pageNumber="258">Anthracosuchus balrogus</emphasis>
|
||
</taxonomicName>
|
||
), and presumably play a role in the size of the pubic apron. The pubic symphysis of
|
||
<taxonomicName id="4C239CE31D41FF8AFD3F9015FEF855FE" family="Dyrosauridae" genus="Cerrejonisuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="improcerus">
|
||
<emphasis id="B9573B721D41FF8AFD3F9015FEF855FE" italics="true" pageId="125" pageNumber="258">Cerrejonisuchus improcerus</emphasis>
|
||
</taxonomicName>
|
||
appears almost parallel to the shaft (angle of approximately 20° between them), which was the case for
|
||
<emphasis id="B9573B721D41FF8AFF2690F5FD5655A1" box="[132,659,693,719]" italics="true" pageId="125" pageNumber="258">
|
||
<taxonomicName id="4C239CE31D41FF8AFF2690F5FE4755A1" box="[132,386,693,719]" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="maghribensis">Dyrosaurus maghribensis</taxonomicName>
|
||
contra
|
||
<taxonomicName id="4C239CE31D41FF8AFE6E90F5FD5655A1" box="[460,659,694,719]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="natator">Hyposaurus natator</taxonomicName>
|
||
</emphasis>
|
||
which displayed a greater angle (about 30°). The dorsal corner of the pubic symphysis forms a right angle with the concave medial margin of the pubis, as opposed to the obtuse angle displayed by other dyrosaurids (i.e.
|
||
<taxonomicName id="4C239CE31D41FF8AFE089175FDB85421" box="[426,637,822,847]" class="Reptilia" family="Dyrosauridae" genus="Hyposaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="natator">
|
||
<emphasis id="B9573B721D41FF8AFE089175FDB85421" box="[426,637,822,847]" italics="true" pageId="125" pageNumber="258">Hyposaurus natator</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C239CE31D41FF8AFD2C9175FECC5401" class="Reptilia" family="Dyrosauridae" genus="Dyrosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Crocodylia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="maghribensis">
|
||
<emphasis id="B9573B721D41FF8AFD2C9175FECC5401" italics="true" pageId="125" pageNumber="258">Dyrosaurus maghribensis</emphasis>
|
||
</taxonomicName>
|
||
, and
|
||
<taxonomicName id="4C239CE31D41FF8AFEE59116FD875401" authorityName="Hastings, Bloch & Jaramillo" authorityYear="2014" box="[327,578,853,879]" family="Dyrosauridae" genus="Anthracosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" pageId="125" pageNumber="258" phylum="Chordata" rank="species" species="balrogus">
|
||
<emphasis id="B9573B721D41FF8AFEE59116FD875401" box="[327,578,853,879]" italics="true" pageId="125" pageNumber="258">Anthracosuchus balrogus</emphasis>
|
||
</taxonomicName>
|
||
). Considering the potential existence of a respiration involving pubic movements, such an enlarged pubic apron presumably enabled to displace consequent visceral masses (
|
||
<bibRefCitation id="EFB29A911D41FF8AFE1191F6FD1C54A1" author="SCAVEZZONI I. & FISCHER V." box="[435,729,949,975]" pageId="125" pageNumber="258" pagination="11222" refId="ref116005" refString="SCAVEZZONI I. & FISCHER V. 2021. - The postcranial skeleton of Cerrejonisuchus improcerus (Crocodyliformes: Dyrosauridae) and the unusual anatomy of dyrosaurids. PeerJ 9: e 11222. https: // doi. org / 10.7717 / peerj. 11222" type="journal article" year="2021">Scavezzoni & Fischer 2021</bibRefCitation>
|
||
). In parallel, the overall size of the pubic apron, and subsequent pubic symphysis, presumably impacted the angle of pubic rotation compared to extant crocodylians (
|
||
<bibRefCitation id="EFB29A911D41FF8AFDF39657FD335340" author="CLAESSENS L." box="[593,758,1044,1070]" pageId="125" pageNumber="258" pagination="1461 - 1465" refId="ref109552" refString="CLAESSENS L. 2004. - Archosaurian respiration and the pelvic girdle aspiration breathing of crocodyliforms. Proceedings of the Royal Society B: Biological Sciences 271 (1547): 1461 - 1465. https: // doi. org / 10.1098 / rspb. 2004.2743" type="journal article" year="2004">Claessens 2004</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |