210 lines
29 KiB
XML
210 lines
29 KiB
XML
<document id="BA6628BE588FE7D7FA4FD509E80A2D07" ID-DOI="10.11646/zootaxa.3215.1.1" ID-ISSN="11755334" ID-Zenodo-Dep="5248640" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629765289367" checkinUser="felipe" docAuthor="Van Bakel, Barry W. M., Guinot, Danièle, Artal, Pedro, Fraaije, René H. B. & Jagt, John W. M." docDate="2012" docId="4601C935FFD4F9295BB4F94FF784FA52" docLanguage="en" docName="zt03215p216.pdf" docOrigin="Zootaxa 3215 (1)" docSource="https://biotaxa.org/Zootaxa/article/view/zootaxa.3215.1.1" docStyle="DocumentStyle:D239614CE4198176A422035174489AB1.4:Zootaxa.2009-2012.monograph" docStyleId="D239614CE4198176A422035174489AB1" docStyleName="Zootaxa.2009-2012.monograph" docStyleVersion="4" docTitle="Silvacarcinus laurae Collins & Smith 1993" docType="treatment" docVersion="7" lastPageNumber="70" masterDocId="BA38B14DFF90F96C5B23FFB4F45FFFB6" masterDocTitle="A revision of the Palaeocorystoidea and the phylogeny of raninoidian crabs (Crustacea, Decapoda, Brachyura, Podotremata) 3215" masterLastPageNumber="216" masterPageNumber="1" pageNumber="69" updateTime="1699109082209" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="7508FAD0AB7680C0A7F12BB74B5AACE5">A revision of the Palaeocorystoidea and the phylogeny of raninoidian crabs (Crustacea, Decapoda, Brachyura, Podotremata) 3215</mods:title>
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<mods:namePart id="038E44BC66F0BB4D92E77C3ABC7EAD26">Van Bakel, Barry W. M.</mods:namePart>
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<mods:namePart id="41DAA0E72957EE532C70652D6836A2D9">Jagt, John W. M.</mods:namePart>
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<treatment id="4601C935FFD4F9295BB4F94FF784FA52" ID-DOI="http://doi.org/10.5281/zenodo.5250390" ID-Zenodo-Dep="5250390" LSID="urn:lsid:plazi:treatment:4601C935FFD4F9295BB4F94FF784FA52" httpUri="http://treatment.plazi.org/id/4601C935FFD4F9295BB4F94FF784FA52" lastPageId="69" lastPageNumber="70" pageId="68" pageNumber="69">
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<subSubSection id="86B22BA8FFD4F9285BB4F94FF6CBF8A2" box="[151,660,1787,1812]" pageId="68" pageNumber="69" type="nomenclature">
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<paragraph id="CE177823FFD4F9285BB4F94FF6CBF8A2" blockId="68.[151,660,1787,1847]" box="[151,660,1787,1812]" pageId="68" pageNumber="69">
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<heading id="955FCF4FFFD4F9285BB4F94FF6CBF8A2" bold="true" box="[151,660,1787,1812]" fontSize="10" level="2" pageId="68" pageNumber="69" reason="2">
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<taxonomicName id="09A803A0FFD4F9285BB4F94FF6CBF8A2" ID-CoL="169cbc8f-028e-49d5-82b7-566d01b84a02" authority="Collins & Smith, 1993" authorityName="Collins & Smith" authorityYear="1993" box="[151,660,1787,1812]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="68" pageNumber="69" phylum="Arthropoda" rank="species" species="laurae">
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<emphasis id="FCDCA431FFD4F9285BB4F94FF6CBF8A2" bold="true" box="[151,660,1787,1812]" pageId="68" pageNumber="69">
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<emphasis id="FCDCA431FFD4F9285BB4F94FF5DAF8A2" bold="true" box="[151,389,1787,1812]" italics="true" pageId="68" pageNumber="69">Silvacarcinus laurae</emphasis>
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<bibRefCitation id="AA3905D2FFD4F9285AAFF94FF6CBF8A2" author="Collins, J. & Smith, R." box="[396,660,1787,1812]" pageId="68" pageNumber="69" pagination="261 - 270" refId="ref123145" refString="Collins, J. [S. H.] & Smith, R. (1993) Ypresian (Lower Eocene) crabs (Decapoda, Crustacea) from Belgium. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, 63, 261 - 270, pl. 1." type="journal article" year="1993">Collins & Smith, 1993</bibRefCitation>
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="86B22BA8FFD4F9285BB4F8ABF5E9F881" box="[151,438,1823,1847]" pageId="68" pageNumber="69" type="description">
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<paragraph id="CE177823FFD4F9285BB4F8ABF5E9F881" blockId="68.[151,660,1787,1847]" box="[151,438,1823,1847]" pageId="68" pageNumber="69">
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(
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<figureCitation id="569364A6FFD4F9285BBCF8ABF50CF881" box="[159,339,1823,1847]" captionStart="FIGURE 20" captionStartId="63.[151,250,1823,1846]" captionTargetBox="[151,1436,178,1802]" captionTargetId="figure-135@63.[151,1436,178,1802]" captionTargetPageId="63" captionText="FIGURE 20. A, E, Silvacarcinus laurae Collins & Smith, 1993 (Orithopsidae), IRScNB TCCI 6119 (paratype; indeterminate sex), lower Eocene (Ypresian), Brussels (Belgium); frontal view showing huge orbits, and dorsal view of carapace; B–D, G, Silvacarcinus laurae Collins & Smith, 1993, IRScNB TCCI6115 (holotype; indeterminate sex); dorsal view of carapace; frontal view; left lateral view, and detail of frontal region; F, Cherpiocarcinus rostratus Marangon & De Angeli, 1997 (Orithopsidae), middle Oligocene, northern Italy; reconstruction of carapace after type material (drawing by A. De Angeli). bs, branchiostegite; ia1, insertion of antennule; ia2, insertion of antenna; o, orbit; P1, P2, P3, pereiopods 1, 2, 3; ps, pterygostome. Scale bars: A- F: 5mm; G: 2mm." figureDoi="http://doi.org/10.5281/zenodo.5248750" httpUri="https://zenodo.org/record/5248750/files/figure.png" pageId="68" pageNumber="69">Figs. 20A–E, G</figureCitation>
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;
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<figureCitation id="569364A6FFD4F9285A7CF8ABF5F1F881" box="[351,430,1823,1847]" captionStart="FIGURE 21" captionStartId="64.[151,250,1792,1815]" captionTargetBox="[151,1436,193,1771]" captionTargetId="figure-165@64.[151,1436,193,1771]" captionTargetPageId="64" captionText="FIGURE 21. Silvacarcinus laurae Collins & Smith, 1993 (Orithopsidae), lower Eocene (Ypresian), Brussels (Belgium). A, B, D, F, IRScNB TCCI 6115 (holotype; indeterminate sex); ventral view showing thoracic sternum; posterior view; detail of posterior view, and detail of thoracic sternum; C, IRScNB TCCI 6119 (paratype; indeterminate sex); ventral view showing thoracic sternum; E, MAB k. 2881 (ex Tak Collection; indeterminate sex), lower Eocene (Ypresian), Egem, northwestern Belgium; ventral view showing thoracic sternum. 2, 3, 4, 5, 6, 8, thoracic sternites 2, 3, 4, 5, 6, 7, 8; 4/5, 5/6, 6/7, 7/8, thoracic sternal sutures 4/5, 5/6, 6/7, 7/8; aP3, aP4, aP5, arthrodial cavities of P3, P4, P5; b, bulge; c, buccal collar of pterygostome; cmxp3, coxa of mxp3; cx1, P1 coxa; e4, e5, e6, e7, episternites 4, 5, 6, 7; in, intestinal canal; pt, pterygostome. Scale bars: 5mm." figureDoi="http://doi.org/10.5281/zenodo.5248752" httpUri="https://zenodo.org/record/5248752/files/figure.png" pageId="68" pageNumber="69">21A–F</figureCitation>
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)
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</paragraph>
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</subSubSection>
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<subSubSection id="86B22BA8FFD4F9295BB4F8D3F02BFD32" lastPageId="69" lastPageNumber="70" pageId="68" pageNumber="69" type="materials_examined">
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<paragraph id="CE177823FFD4F9285BB4F8D3F0C3F87E" blockId="68.[151,1436,1895,1993]" pageId="68" pageNumber="69">
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<emphasis id="FCDCA431FFD4F9285BB4F8D3F5DFF836" bold="true" box="[151,384,1895,1920]" inLineHeading="true" pageId="68" pageNumber="69" reason="1">Material examined.</emphasis>
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<materialsCitation id="7EC0727EFFD4F9285AA5F8D3F0C3F87E" collectionCode="IRScNB, MAB" country="Belgium" county="Egem" location="Ypresian" municipality="lower Eocene" pageId="68" pageNumber="69" specimenCode="TCCI 6115, 6117-6119" specimenCount="1" stateProvince="Region de Bruxelles-Capitale" typeStatus="holotype">
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<typeStatus id="1113C681FFD4F9285AA5F8D3F5B1F8C9" box="[390,494,1895,1919]" pageId="68" pageNumber="69" type="holotype">Holotype</typeStatus>
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and
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<specimenCount id="D8AEB3AAFFD4F9285906F8D3F68EF836" box="[549,721,1895,1920]" pageId="68" pageNumber="69" type="generic" typeStatus="paratypes">three paratypes</specimenCount>
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, all from the
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<location id="CB772EF8FFD4F9285846F8D3F795F8C9" LSID="urn:lsid:plazi:treatment:4601C935FFD4F9295BB4F94FF784FA52:CB772EF8FFD4F9285846F8D3F795F8C9" box="[869,970,1895,1919]" country="Belgium" county="Egem" municipality="lower Eocene" name="Ypresian" pageId="68" pageNumber="69" stateProvince="Region de Bruxelles-Capitale">Ypresian</location>
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,
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<location id="CB772EF8FFD4F92858F6F8D3F02FF8C9" LSID="urn:lsid:plazi:treatment:4601C935FFD4F9295BB4F94FF784FA52:CB772EF8FFD4F92858F6F8D3F02FF8C9" box="[981,1136,1895,1919]" country="Belgium" county="Egem" municipality="lower Eocene" name="lower Eocene" pageId="68" pageNumber="69" stateProvince="Region de Bruxelles-Capitale">lower Eocene</location>
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,
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<location id="CB772EF8FFD4F9285F58F8DCF09BF8C9" LSID="urn:lsid:plazi:treatment:4601C935FFD4F9295BB4F94FF784FA52:CB772EF8FFD4F9285F58F8DCF09BF8C9" box="[1147,1220,1896,1919]" country="Belgium" county="Egem" municipality="lower Eocene" name="Forest" pageId="68" pageNumber="69" stateProvince="Region de Bruxelles-Capitale">Forest</location>
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,
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<collectingRegion id="0C6CB6C1FFD4F9285FECF8D3F16FF8C9" box="[1231,1328,1895,1919]" country="Belgium" name="Region de Bruxelles-Capitale" pageId="68" pageNumber="69">Brussels</collectingRegion>
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,
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<collectingCountry id="B6BF38B3FFD4F9285E18F8D3F1C4F8C9" box="[1339,1435,1895,1919]" name="Belgium" pageId="68" pageNumber="69">Belgium</collectingCountry>
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(
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<collectionCode id="A8B9E0E6FFD4F9285BBDF838F4A0F812" box="[158,255,1932,1956]" pageId="68" pageNumber="69">IRScNB</collectionCode>
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<specimenCode id="9E0ED058FFD4F9285A2BF838F5D4F812" box="[264,395,1932,1956]" collectionCode="IRScNB" pageId="68" pageNumber="69">TCCI 6115</specimenCode>
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,
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<specimenCode id="9E0ED058FFD4F9285ABAF838F646F812" box="[409,537,1932,1956]" collectionCode="IRScNB" pageId="68" pageNumber="69">6117–6119</specimenCode>
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).
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<location id="CB772EF8FFD4F928590DF838F603F812" LSID="urn:lsid:plazi:treatment:4601C935FFD4F9295BB4F94FF784FA52:CB772EF8FFD4F928590DF838F603F812" box="[558,604,1932,1956]" country="Belgium" county="Egem" municipality="lower Eocene" name="One" pageId="68" pageNumber="69" stateProvince="Region de Bruxelles-Capitale">One</location>
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additional specimen with preserved thoracic sternum (
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<collectionCode id="A8B9E0E6FFD4F9285FF1F838F14CF812" box="[1234,1299,1932,1956]" pageId="68" pageNumber="69">MAB</collectionCode>
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k. 2881,
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<emphasis id="FCDCA431FFD4F9285EA0F839F1C3F812" box="[1411,1436,1933,1956]" italics="true" pageId="68" pageNumber="69">ex</emphasis>
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Tak Collection; indeterminate sex),
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<collectingMunicipality id="2E73E259FFD4F928590BF804F69EF87E" box="[552,705,1968,1992]" pageId="68" pageNumber="69">lower Eocene</collectingMunicipality>
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(Ypresian),
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<collectingCounty id="277600AFFFD4F928586FF805F7CFF87F" box="[844,912,1969,1993]" pageId="68" pageNumber="69">Egem</collectingCounty>
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, northwestern
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<collectingCountry id="B6BF38B3FFD4F9285F17F804F0C7F87E" box="[1076,1176,1968,1992]" name="Belgium" pageId="68" pageNumber="69">Belgium</collectingCountry>
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.
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</materialsCitation>
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</paragraph>
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<paragraph id="CE177823FFD5F9295BE4FF2CF02BFD32" blockId="69.[151,1437,151,1508]" pageId="69" pageNumber="70">
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<emphasis id="FCDCA431FFD5F9295BE4FF2CF590FF06" bold="true" box="[199,463,151,176]" inLineHeading="true" pageId="69" pageNumber="70" reason="1">Emended description.</emphasis>
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Mxp3 coxae partially preserved; well separated by sternites 1‒3, large, flabelliform. Subhepatic region elongated, narrow, with granular crest; pleural suture raised, granular. Pterygostome tumid, with low, blunt crest; buccal frame wide, buccal margin concave, with smooth buccal collar; branchiostegite developed. Thoracic sternum elongated, suboval, with undivided, plain medial part, raised lateral portion of sternite 4, episternites 4‒6. Sternites 1, 2, or only 2, small, crown shaped, at lower level than other sternites; sternite 3 diamond shaped, distinguished from sternite 4 by lateral grooves; sternite 4 subtrapezoidal, anterior corners slightly wider than sternite 3, lateral margins weakly concave, sternite medially with clear depression, episternite 4 large, distinguished from sternite 4 by oblique, shallow groove, P1 gynglyme just posterior to groove; suture 4/5 only lateral, crescent shaped; episternite 5 nearly square, posteriorly with abdominal holding structure near P2 gynglyme; suture 5/6 sinuous, crescent shaped; sternite 6 elongated, laterally with acute groove marking low lateral depression; sternite 7 smaller than preceding sternites, anteriorly ridged, anteromedially with pitted, spherical bulge, medially with 2 tumid, vertical elevations, separated by medial line; sternite 8 small, strongly tilted, perpendicular to preceding sternites, sides separated creating medial pit. P1‒P3 gynglymes on the same level; P1 coxa large; arthrodial cavity of P4 of normal size, weakly tilted, arthrodial cavity of P5 markedly reduced, subdorsal.
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</paragraph>
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</subSubSection>
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<subSubSection id="86B22BA8FFD5F9295BE4FD24F784FA52" pageId="69" pageNumber="70" type="discussion">
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<paragraph id="CE177823FFD5F9295BE4FD24F575FC71" blockId="69.[151,1437,151,1508]" pageId="69" pageNumber="70">
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<emphasis id="FCDCA431FFD5F9295BE4FD24F564FD1E" bold="true" box="[199,315,656,680]" inLineHeading="true" pageId="69" pageNumber="70" reason="1">Remarks.</emphasis>
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Examination of the
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<typeStatus id="1113C681FFD5F9295902FD24F60EFD1E" box="[545,593,656,680]" pageId="69" pageNumber="70">type</typeStatus>
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series and an additional specimen with ventral characters preserved necessitates an amendment of the description; the dorsal carapace was described by
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<bibRefCitation id="AA3905D2FFD5F9295F3AFD00F13BFD7A" author="Collins, J. & Smith, R." box="[1049,1380,692,716]" pageId="69" pageNumber="70" pagination="261 - 270" refId="ref123145" refString="Collins, J. [S. H.] & Smith, R. (1993) Ypresian (Lower Eocene) crabs (Decapoda, Crustacea) from Belgium. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, 63, 261 - 270, pl. 1." type="journal article" year="1993">Collins & Smith (1993: 264)</bibRefCitation>
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||
. The original description of
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<taxonomicName id="09A803A0FFD5F9295AB4FD6CF5A3FD46" authorityName="Collins & Smith" authorityYear="1993" box="[407,508,728,752]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="species" species="laurae">
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<emphasis id="FCDCA431FFD5F9295AB4FD6CF5A3FD46" box="[407,508,728,752]" italics="true" pageId="69" pageNumber="70">S. laurae</emphasis>
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</taxonomicName>
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by
|
||
<bibRefCitation id="AA3905D2FFD5F9295904FD63F73DFD59" author="Collins, J. & Smith, R." box="[551,866,727,751]" pageId="69" pageNumber="70" pagination="261 - 270" refId="ref123145" refString="Collins, J. [S. H.] & Smith, R. (1993) Ypresian (Lower Eocene) crabs (Decapoda, Crustacea) from Belgium. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, 63, 261 - 270, pl. 1." type="journal article" year="1993">Collins & Smith (1993: 263</bibRefCitation>
|
||
, text-fig. 2 (not 3a, b); pl. 2, figs. 1, 2, 4–6 (not 3), from the lower Eocene of
|
||
<collectingRegion id="0C6CB6C1FFD5F9295A98FD48F645FCA2" box="[443,538,764,788]" country="Belgium" name="Region de Bruxelles-Capitale" pageId="69" pageNumber="70">Brussels</collectingRegion>
|
||
(
|
||
<collectingCountry id="B6BF38B3FFD5F929590BFD48F6D1FCA2" box="[552,654,764,788]" name="Belgium" pageId="69" pageNumber="70">Belgium</collectingCountry>
|
||
), was based on
|
||
<specimenCount id="D8AEB3AAFFD5F929581EFD48F7BCFCA2" box="[829,995,764,788]" pageId="69" pageNumber="70" type="generic">five specimens</specimenCount>
|
||
. As pointed out by
|
||
<bibRefCitation id="AA3905D2FFD5F9295FE3FD48F4E0FC81" author="Guinot, D. & Vega, F. J. & Van Bakel, B. W. M." pageId="69" pageNumber="70" pagination="681 - 719" refId="ref130419" refString="Guinot, D., Vega, F. J. & Van Bakel, B. W. M. (2008) Cenomanocarcinidae n. fam., a new Cretaceous podotreme family (Crustacea, Brachyura, Raninoidia), with comments on related families. Geodiversitas, 30, 681 - 719." type="journal article" year="2008">
|
||
Guinot
|
||
<emphasis id="FCDCA431FFD5F9295E37FD49F113FCA2" box="[1300,1356,764,788]" italics="true" pageId="69" pageNumber="70">et al.</emphasis>
|
||
(2008: 32)
|
||
</bibRefCitation>
|
||
, re-examination of the thoracic sternum (IRScNB TCCI 611) (
|
||
<bibRefCitation id="AA3905D2FFD5F929585CFCABF0DCFC81" author="Collins, J. & Smith, R." box="[895,1155,799,823]" pageId="69" pageNumber="70" pagination="261 - 270" refId="ref123145" refString="Collins, J. [S. H.] & Smith, R. (1993) Ypresian (Lower Eocene) crabs (Decapoda, Crustacea) from Belgium. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, 63, 261 - 270, pl. 1." type="journal article" year="1993">Collins & Smith, 1993</bibRefCitation>
|
||
: text-fig. 3a, b; pl. 2, fig. 3) showed it was erroneously assigned to
|
||
<taxonomicName id="09A803A0FFD5F929594BFCF0F692FCEA" authorityName="Collins & Smith" authorityYear="1993" box="[616,717,836,860]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="species" species="laurae">
|
||
<emphasis id="FCDCA431FFD5F929594BFCF0F692FCEA" box="[616,717,836,860]" italics="true" pageId="69" pageNumber="70">S. laurae</emphasis>
|
||
</taxonomicName>
|
||
, and used for the
|
||
<typeStatus id="1113C681FFD5F92958B7FCF0F79BFCEA" box="[916,964,836,860]" pageId="69" pageNumber="70">type</typeStatus>
|
||
description. The thoracic sternum is completely different from the sterna associated with the carapaces of
|
||
<taxonomicName id="09A803A0FFD5F929585AFCDCF780FC36" authorityName="Collins & Smith" authorityYear="1993" box="[889,991,872,896]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="species" species="laurae">
|
||
<emphasis id="FCDCA431FFD5F929585AFCDCF780FC36" box="[889,991,872,896]" italics="true" pageId="69" pageNumber="70">S. laurae</emphasis>
|
||
</taxonomicName>
|
||
, and cannot be included in Raninoidia. To avoid further confusion, the
|
||
<typeStatus id="1113C681FFD5F9295AD8FC38F674FC12" box="[507,555,908,932]" pageId="69" pageNumber="70">type</typeStatus>
|
||
series has been re-examined and a new description of the ventral characters is given herein.
|
||
</paragraph>
|
||
<paragraph id="CE177823FFD5F9295BE4FC60F6A7FABA" blockId="69.[151,1437,151,1508]" pageId="69" pageNumber="70">
|
||
Some ventral characters present in the
|
||
<taxonomicName id="09A803A0FFD5F9295956FC60F685FC5A" authorityName="Collins & Smith" authorityYear="1993" box="[629,730,980,1004]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="species" species="laurae">
|
||
<emphasis id="FCDCA431FFD5F9295956FC60F685FC5A" box="[629,730,980,1004]" italics="true" pageId="69" pageNumber="70">S. laurae</emphasis>
|
||
</taxonomicName>
|
||
material are useful to determine its taxonomic placement. Sternite 4 is subtrapezoidal; sutures 4/5 and 5/6 are lateral and crescent shaped, the medial portion pointing anteriorly. The P4 was not preserved; however, the arthrodial cavity is of normal size, indicating P4 was not reduced and in a normal position. The P5 arthrodial cavity is much reduced and tilted, which indicates the P5 was reduced and carried subdorsally, typical for
|
||
<taxonomicName id="09A803A0FFD5F9295AF0FBD0F6FDFBCA" box="[467,674,1124,1148]" pageId="69" pageNumber="201" rank="superFamily" superFamily="Palaeocorystoidea">Palaeocorystoidea</taxonomicName>
|
||
. Sternite 3 is diamond shaped, sternite 4 shows a medial gutter, features that recall those in
|
||
<taxonomicName id="09A803A0FFD5F9295AE9FB3CF699FB29" baseAuthorityName="Bell" baseAuthorityYear="1863" box="[458,710,1160,1184]" class="Malacostraca" family="Orithopsidae" genus="Orithopsis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="species" species="tricarinata">
|
||
<emphasis id="FCDCA431FFD5F9295AE9FB3CF699FB29" box="[458,710,1160,1184]" italics="true" pageId="69" pageNumber="70">Orithopsis tricarinata</emphasis>
|
||
</taxonomicName>
|
||
. The carapace shows an acute, sinuous cervical groove and branchial crests which are concave and connected over the cardiac region (H-shaped elevation). The orbits are distinctly large, the supraorbital margin shows the broken bases of, presumably, long spines which protected the eye. All these features place
|
||
<taxonomicName id="09A803A0FFD5F9295A87FB40F664FABA" authorityName="Collins & Smith" authorityYear="1993" box="[420,571,1268,1292]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="FCDCA431FFD5F9295A87FB40F664FABA" box="[420,571,1268,1292]" italics="true" pageId="69" pageNumber="70">Silvacarcinus</emphasis>
|
||
</taxonomicName>
|
||
in
|
||
<taxonomicName id="09A803A0FFD5F929597CFB40F6ACFABA" authorityName="Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross" authorityYear="2003" box="[607,755,1268,1292]" class="Malacostraca" family="Orithopsidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="family">Orithopsidae</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="CE177823FFD5F9295BE4FAACF784FA52" blockId="69.[151,1437,151,1508]" pageId="69" pageNumber="70">
|
||
The arrangement of the posterior sternites 7 and 8 is complex and cryptic, the sex of the examined material being difficult to determine. A sunken pit appears to be present between sternite 7 and the strongly tilted sternite 8 (
|
||
<figureCitation id="569364A6FFD5F9295BBCFAD4F558FACE" box="[159,263,1376,1400]" captionStart="FIGURE 21" captionStartId="64.[151,250,1792,1815]" captionTargetBox="[151,1436,193,1771]" captionTargetId="figure-165@64.[151,1436,193,1771]" captionTargetPageId="64" captionText="FIGURE 21. Silvacarcinus laurae Collins & Smith, 1993 (Orithopsidae), lower Eocene (Ypresian), Brussels (Belgium). A, B, D, F, IRScNB TCCI 6115 (holotype; indeterminate sex); ventral view showing thoracic sternum; posterior view; detail of posterior view, and detail of thoracic sternum; C, IRScNB TCCI 6119 (paratype; indeterminate sex); ventral view showing thoracic sternum; E, MAB k. 2881 (ex Tak Collection; indeterminate sex), lower Eocene (Ypresian), Egem, northwestern Belgium; ventral view showing thoracic sternum. 2, 3, 4, 5, 6, 8, thoracic sternites 2, 3, 4, 5, 6, 7, 8; 4/5, 5/6, 6/7, 7/8, thoracic sternal sutures 4/5, 5/6, 6/7, 7/8; aP3, aP4, aP5, arthrodial cavities of P3, P4, P5; b, bulge; c, buccal collar of pterygostome; cmxp3, coxa of mxp3; cx1, P1 coxa; e4, e5, e6, e7, episternites 4, 5, 6, 7; in, intestinal canal; pt, pterygostome. Scale bars: 5mm." figureDoi="http://doi.org/10.5281/zenodo.5248752" httpUri="https://zenodo.org/record/5248752/files/figure.png" pageId="69" pageNumber="70">Fig. 21D</figureCitation>
|
||
); no paired suture 7/8 is discernible but there is a medial line on sternite 7 (
|
||
<figureCitation id="569364A6FFD5F9295F6BFAD4F0F5FACE" box="[1096,1194,1376,1400]" captionStart="FIGURE 21" captionStartId="64.[151,250,1792,1815]" captionTargetBox="[151,1436,193,1771]" captionTargetId="figure-165@64.[151,1436,193,1771]" captionTargetPageId="64" captionText="FIGURE 21. Silvacarcinus laurae Collins & Smith, 1993 (Orithopsidae), lower Eocene (Ypresian), Brussels (Belgium). A, B, D, F, IRScNB TCCI 6115 (holotype; indeterminate sex); ventral view showing thoracic sternum; posterior view; detail of posterior view, and detail of thoracic sternum; C, IRScNB TCCI 6119 (paratype; indeterminate sex); ventral view showing thoracic sternum; E, MAB k. 2881 (ex Tak Collection; indeterminate sex), lower Eocene (Ypresian), Egem, northwestern Belgium; ventral view showing thoracic sternum. 2, 3, 4, 5, 6, 8, thoracic sternites 2, 3, 4, 5, 6, 7, 8; 4/5, 5/6, 6/7, 7/8, thoracic sternal sutures 4/5, 5/6, 6/7, 7/8; aP3, aP4, aP5, arthrodial cavities of P3, P4, P5; b, bulge; c, buccal collar of pterygostome; cmxp3, coxa of mxp3; cx1, P1 coxa; e4, e5, e6, e7, episternites 4, 5, 6, 7; in, intestinal canal; pt, pterygostome. Scale bars: 5mm." figureDoi="http://doi.org/10.5281/zenodo.5248752" httpUri="https://zenodo.org/record/5248752/files/figure.png" pageId="69" pageNumber="70">Fig. 21F</figureCitation>
|
||
). The apertures of the spermathecal apertures may be recessed and hidden in the sunken pit if the specimen is a female. More material is needed to verify the exact morphology, but it is apparent that the posterior sternites of
|
||
<taxonomicName id="09A803A0FFD5F9295F78FA1CF0ADFA76" authorityName="Collins & Smith" authorityYear="1993" box="[1115,1266,1448,1472]" class="Malacostraca" family="Orithopsidae" genus="Silvacarcinus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="FCDCA431FFD5F9295F78FA1CF0ADFA76" box="[1115,1266,1448,1472]" italics="true" pageId="69" pageNumber="70">Silvacarcinus</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="09A803A0FFD5F9295E0AFA1CF4E1FA52" authorityName="Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross" authorityYear="2003" class="Malacostraca" family="Orithopsidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="family">Orithopsidae</taxonomicName>
|
||
are different from those of
|
||
<taxonomicName id="09A803A0FFD5F9295AD0FA78F680FA52" authorityName="Guinot, Vega & Van Bakel" authorityYear="2008" box="[499,735,1484,1508]" class="Malacostraca" family="Cenomanocarcinidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="family">Cenomanocarcinidae</taxonomicName>
|
||
and
|
||
<taxonomicName id="09A803A0FFD5F9295835FA78F788FA52" box="[790,983,1484,1508]" class="Malacostraca" family="Palaeocorystidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="69" pageNumber="70" phylum="Arthropoda" rank="family">Palaeocorystidae</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |