363 lines
46 KiB
XML
363 lines
46 KiB
XML
<document id="881E0187E6138EAF857FA822304119AE" ID-DOI="10.11646/zootaxa.3695.1.1" ID-GBIF-Dataset="527868ec-e7d4-4048-9141-66c9fe1a3ddb" ID-ISSN="1175-5326" ID-Zenodo-Dep="284327" ID-ZooBank="D68A88C8-654D-4563-BDE2-6D6266D67232" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460660579466" checkinUser="plazi" docAuthor="Vaz, Diego F. B. & De, Marcelo R." docDate="2013" docId="03EF8783FFA4D2749985FC78FEB904CA" docLanguage="en" docName="zt03695p081.pdf" docOrigin="Zootaxa 3695 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Squatina dumeril Le Sueur 1818" docType="treatment" docVersion="5" lastPageNumber="53" masterDocId="FFD6FFFBFF95D2409912FF93FFC70378" masterDocTitle="Morphological and taxonomic revision of species of Squatina from the Southwestern Atlantic Ocean (Chondrichthyes: Squatiniformes: Squatinidae)" masterLastPageNumber="81" masterPageNumber="1" pageNumber="50" updateTime="1698347531764" updateUser="plazi">
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<mods:mods id="77664870D3D00DA6F30F606E94462348" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="71CFF5E1984819A2DFBC09DC9D71E512">
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<mods:title id="5D344EB04EEE435C45EA809D88C7AB7C">Morphological and taxonomic revision of species of Squatina from the Southwestern Atlantic Ocean (Chondrichthyes: Squatiniformes: Squatinidae)</mods:title>
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<mods:name id="F27A44DFEED1D4AF3BA3198AA4E13D1D" type="personal">
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<mods:roleTerm id="9F8C0BC745FBF66172EB82C0197F2481">Author</mods:roleTerm>
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<mods:namePart id="B0DD5F3D042E5E72E41CA19D36BAB3A3">Vaz, Diego F. B.</mods:namePart>
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<mods:name id="07DD285C09311BC18D23829F89239176" type="personal">
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<mods:role id="B4C1AB4CD752BF84BEC5F10D9D72A293">
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<mods:roleTerm id="806EF7162262871C00AC21A018C978D4">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="23EAAF1F875BC90E13742F9795AC50D8">De, Marcelo R.</mods:namePart>
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<mods:typeOfResource id="8EE46D1B7A53A39A5F594F01C1B67CB1">text</mods:typeOfResource>
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<mods:title id="CEBB3C816793C34093EFE2A6D4F44E3F">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="595515D643EE0177B35BD61E82C63F8F">
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<mods:date id="6B06AF51B75419D2365F6050E4EC3CFA">2013</mods:date>
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<mods:detail id="FC6561F884F43F9AFD1496937160836A" type="volume">
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<mods:number id="052D61D813D2B622033C37396C0FBD26">3695</mods:number>
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<mods:detail id="C39AFF1E2A8BDA7034DBEF6B92A75634" type="issue">
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<mods:number id="88A7EF57C1FD38C87F55E57A20E440CD">1</mods:number>
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<mods:start id="FB907CEBF62D1AF59EC73BBD67FFF3BA">1</mods:start>
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<mods:end id="45F19D9C3708D3D06C780B4C2171D41A">81</mods:end>
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<mods:classification id="1D1D90FC69F459D2AB365B3E354A0BF2">journal article</mods:classification>
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<mods:identifier id="54994DD800CEF4E62174E71978B031D1" type="DOI">10.11646/zootaxa.3695.1.1</mods:identifier>
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<mods:identifier id="CC96E2DD581CF73676D37B4511B170C7" type="GBIF-Dataset">527868ec-e7d4-4048-9141-66c9fe1a3ddb</mods:identifier>
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<mods:identifier id="86A3A962211BB86E831108FF19AA450D" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="61D697A4AFC74CA895233B1126348579" type="Zenodo-Dep">284327</mods:identifier>
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<treatment id="03EF8783FFA4D2749985FC78FEB904CA" ID-DOI="http://doi.org/10.5281/zenodo.6146720" ID-GBIF-Taxon="127665171" ID-Zenodo-Dep="6146720" LSID="urn:lsid:plazi:treatment:03EF8783FFA4D2749985FC78FEB904CA" httpUri="http://treatment.plazi.org/id/03EF8783FFA4D2749985FC78FEB904CA" lastPageId="52" lastPageNumber="53" pageId="49" pageNumber="50">
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<subSubSection id="C35C651EFFA4D2719985FC78FC9A0709" pageId="49" pageNumber="50" type="nomenclature">
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<paragraph id="8BF93695FFA4D2719985FC78FDED077D" blockId="49.[151,554,1003,1029]" box="[151,554,1003,1029]" pageId="49" pageNumber="50">
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<heading id="D0B181F9FFA4D2719985FC78FDED077D" bold="true" box="[151,554,1003,1029]" fontSize="11" level="1" pageId="49" pageNumber="50" reason="1">
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<taxonomicName id="4C464D16FFA4D2719985FC78FDED077D" ID-CoL="6ZFHF" authority="Le Sueur, 1818" authorityName="Le Sueur" authorityYear="1818" box="[151,554,1003,1029]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="dumeril">
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<emphasis id="B932EA87FFA4D2719985FC78FDED077D" bold="true" box="[151,554,1003,1029]" pageId="49" pageNumber="50">
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<emphasis id="B932EA87FFA4D2719985FC78FEAE077D" bold="true" box="[151,361,1003,1029]" italics="true" pageId="49" pageNumber="50">Squatina dumeril</emphasis>
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Le Sueur, 1818
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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<paragraph id="8BF93695FFA4D2719985FBA7FC9A0709" blockId="49.[151,1436,1073,2010]" pageId="49" pageNumber="50">
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<emphasis id="B932EA87FFA4D2719985FBA7FECA0735" bold="true" box="[151,269,1076,1101]" pageId="49" pageNumber="50">
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<typeStatus id="54FD8837FFA4D2719985FBA7FECA0735" box="[151,269,1076,1101]" pageId="49" pageNumber="50" type="lectotype">Lectotype</typeStatus>
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</emphasis>
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. MNHN A-9692, adult male (
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<quantity id="4CBE9B70FFA4D2719B72FBA6FD0B0734" box="[608,716,1077,1101]" metricMagnitude="0" metricUnit="m" metricValue="1.172" pageId="49" pageNumber="50" unit="mm" value="1172.0">1172 mm</quantity>
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TL), off coast of New York state,
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<collectingCountry id="F3517605FFA4D2719D5CFBA7FB210735" box="[1102,1254,1076,1101]" name="United States of America" pageId="49" pageNumber="50">United States</collectingCountry>
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, 40o S 67o W (for locality details, see Bertin, 1939) (
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<typeStatus id="54FD8837FFA4D2719B05FBCBFD470709" box="[535,640,1112,1137]" pageId="49" pageNumber="50" type="lectotype">lectotype</typeStatus>
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herein designated).
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</paragraph>
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</subSubSection>
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<subSubSection id="C35C651EFFA4D27199D5FBEFFE960670" pageId="49" pageNumber="50" type="materials_examined">
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<paragraph id="8BF93695FFA4D27199D5FBEFFE960670" blockId="49.[151,1436,1073,2010]" pageId="49" pageNumber="50">
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<emphasis id="B932EA87FFA4D27199D5FBEFFD6707ED" bold="true" box="[199,672,1148,1173]" pageId="49" pageNumber="50">Additional non-type material examined</emphasis>
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. MNHN A-9691, adult male (
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<quantity id="4CBE9B70FFA4D2719AE5FBEEFBA307EC" box="[1015,1124,1149,1173]" metricMagnitude="0" metricUnit="m" metricValue="1.09" pageId="49" pageNumber="50" unit="mm" value="1090.0">1090 mm</quantity>
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TL), New York, New York state,
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<collectingCountry id="F3517605FFA4D27199CBFB30FEB507C4" box="[217,370,1187,1212]" name="United States of America" pageId="49" pageNumber="50">United States</collectingCountry>
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,
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<geoCoordinate id="EE725052FFA4D271986CFB37FE3E07C4" box="[382,505,1184,1212]" direction="south" orientation="latitude" pageId="49" pageNumber="50" precision="15" value="-40.666946">40o 40’1”S</geoCoordinate>
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<geoCoordinate id="EE725052FFA4D2719B13FB37FD4807C4" box="[513,655,1184,1212]" direction="west" orientation="longitude" pageId="49" pageNumber="50" precision="15" value="-73.83305">73o49’59”W</geoCoordinate>
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; USNM 118461, juvenile female (
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<quantity id="4CBE9B70FFA4D2719D06FB37FBB407C3" box="[1044,1139,1188,1212]" metricMagnitude="-1" metricUnit="m" metricValue="3.82" pageId="49" pageNumber="50" unit="mm" value="382.0">382 mm</quantity>
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TL), continental slope off New York,
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<collectingCountry id="F3517605FFA4D2719805FB59FE69079A" box="[279,430,1226,1251]" name="United States of America" pageId="49" pageNumber="50">United States</collectingCountry>
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,
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<geoCoordinate id="EE725052FFA4D27198ABFB59FDE0079A" box="[441,551,1222,1250]" direction="north" orientation="latitude" pageId="49" pageNumber="50" precision="925" value="39.7">39o 42’ N</geoCoordinate>
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,
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<geoCoordinate id="EE725052FFA4D2719B23FB59FD62079A" box="[561,677,1222,1250]" direction="west" orientation="longitude" pageId="49" pageNumber="50" precision="925" value="-71.28333">71o 17’ W</geoCoordinate>
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; USNM 400796, juvenile male (
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<quantity id="4CBE9B70FFA4D2719D1CFB59FBAB079A" box="[1038,1132,1226,1250]" metricMagnitude="-1" metricUnit="m" metricValue="3.2" pageId="49" pageNumber="50" unit="mm" value="320.0">320 mm</quantity>
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TL), off
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<collectingCountry id="F3517605FFA4D2719DC0FB58FAE9079A" box="[1234,1326,1227,1250]" name="Panama" pageId="49" pageNumber="50">Panama</collectingCountry>
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,
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<geoCoordinate id="EE725052FFA4D2719C2AFB59FF690670" direction="north" orientation="latitude" pageId="49" pageNumber="50" precision="15" value="9.265">9o15’54” N</geoCoordinate>
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,
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<geoCoordinate id="EE725052FFA4D27199ABFB62FE8A0670" box="[185,333,1261,1289]" direction="west" orientation="longitude" pageId="49" pageNumber="50" precision="15" value="-81.68166">81o40’54” W</geoCoordinate>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C35C651EFFA4D27499D5FA87FEB904CA" lastPageId="52" lastPageNumber="53" pageId="49" pageNumber="50" type="discussion">
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<paragraph id="8BF93695FFA4D27199D5FA87FC920509" blockId="49.[151,1436,1073,2010]" pageId="49" pageNumber="50">
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<emphasis id="B932EA87FFA4D27199D5FA87FDDC0655" bold="true" box="[199,539,1300,1325]" pageId="49" pageNumber="50">Comments on type-material</emphasis>
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. The
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<typeStatus id="54FD8837FFA4D2719B73FA85FD7F0656" box="[609,696,1302,1326]" pageId="49" pageNumber="50" type="syntype">syntype</typeStatus>
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of
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<taxonomicName id="4C464D16FFA4D2719BF1FA86FC9E0654" box="[739,857,1300,1325]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="dumeril">
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<emphasis id="B932EA87FFA4D2719BF1FA86FC9E0654" bold="true" box="[739,857,1300,1325]" italics="true" pageId="49" pageNumber="50">S. dumeril</emphasis>
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</taxonomicName>
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(MNHN A-9692) and another non-type specimen (MNHN A-9691) collected near the
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<typeStatus id="54FD8837FFA4D2719B27FAAAFD4B0629" box="[565,652,1337,1361]" pageId="49" pageNumber="50" type="syntype">syntype</typeStatus>
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and at about the same time were examined in the MNHN. These are dry, stuffed specimens; many characters of external morphology, therefore, as well as morphometric proportions and coloration, are poorly preserved. However, features of the dermal denticles and teeth could be studied, confirming that
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<taxonomicName id="4C464D16FFA4D2719840FA36FE0E06C4" box="[338,457,1444,1469]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="dumeril">
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<emphasis id="B932EA87FFA4D2719840FA36FE0E06C4" bold="true" box="[338,457,1444,1469]" italics="true" pageId="49" pageNumber="50">S. dumeril</emphasis>
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</taxonomicName>
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is similar to Southwestern Atlantic
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<taxonomicName id="4C464D16FFA4D2719A63FA36FC1206C5" box="[881,981,1445,1469]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="genus">
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<emphasis id="B932EA87FFA4D2719A63FA36FC1206C5" bold="true" box="[881,981,1445,1469]" italics="true" pageId="49" pageNumber="50">Squatina</emphasis>
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</taxonomicName>
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species in external morphology and in some proportions (
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<figureCitation id="137D2A10FFA4D271987FFA5BFE0B0699" box="[365,460,1480,1505]" captionStart="FIGURE 37" captionStartId="51.[151,250,1147,1169]" captionTargetBox="[314,1272,191,1103]" captionTargetId="figure@51.[287,1288,179,1120]" captionTargetPageId="51" captionText="FIGURE 37. Lectotype of Squatina dumeril (MNHN A- 9692, off coast of New York state, United States, 1172 mm TL)." httpUri="https://zenodo.org/record/284365/files/figure.png" pageId="49" pageNumber="50">Figs. 37</figureCitation>
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,
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<figureCitation id="137D2A10FFA4D27198CBFA5AFE3E0699" box="[473,505,1481,1505]" captionStart="FIGURE 38" captionStartId="52.[151,250,1457,1479]" captionTargetBox="[345,1244,537,1426]" captionTargetId="figure@52.[345,1245,537,1426]" captionTargetPageId="52" captionText="FIGURE 38. Morphological details of Squatina dumeril (MNHN A- 9692). A) Dorsal view of head. B) Dorsal view of pectoral fin. C) Labial view of lower jaw showing the tooth rows. D) Apex of pectoral fin outer edge with enlarged dermal denticles showing sexual dimorphism. E) Lateral view of dorsal fins. F) Dorsal view of clasper. Abbreviations: crh, cover rhiphidion; dd, enlarged dermal denticles; rh, rhiphidion. Scale bar = 50 mm." httpUri="https://zenodo.org/record/284366/files/figure.png" pageId="49" pageNumber="50">38</figureCitation>
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). One difference, however, concerned pectoral fin length (28.7% TL in
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<typeStatus id="54FD8837FFA4D2719C3CFA5BFA500699" box="[1326,1431,1480,1505]" pageId="49" pageNumber="50" type="lectotype">lectotype</typeStatus>
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, 23.9% TL in non-type specimen, in
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<taxonomicName id="4C464D16FFA4D2719B35FA7EFD5D057C" box="[551,666,1516,1541]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="dumeril">
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<emphasis id="B932EA87FFA4D2719B35FA7EFD5D057C" bold="true" box="[551,666,1516,1541]" italics="true" pageId="49" pageNumber="50">S. dumeril</emphasis>
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</taxonomicName>
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), values not found in
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<taxonomicName id="4C464D16FFA4D2719A9EFA7EFBD3057D" box="[908,1044,1517,1541]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="argentina">
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<emphasis id="B932EA87FFA4D2719A9EFA7EFBD3057D" bold="true" box="[908,1044,1517,1541]" italics="true" pageId="49" pageNumber="50">S. argentina</emphasis>
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</taxonomicName>
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and only occasionally encountered in specimens of
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<taxonomicName id="4C464D16FFA4D2719844F982FE010550" box="[342,454,1552,1577]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="occulta">
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<emphasis id="B932EA87FFA4D2719844F982FE010550" bold="true" box="[342,454,1552,1577]" italics="true" pageId="49" pageNumber="50">S. occulta</emphasis>
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</taxonomicName>
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and
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<taxonomicName id="4C464D16FFA4D2719B11F982FD6D0550" box="[515,682,1552,1577]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="guggenheim">
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<emphasis id="B932EA87FFA4D2719B11F982FD6D0550" bold="true" box="[515,682,1552,1577]" italics="true" pageId="49" pageNumber="50">S. guggenheim</emphasis>
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</taxonomicName>
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(even though it is almost 4% below the mean for these species). However, poor preservation must be taken into account; the specimen of
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<taxonomicName id="4C464D16FFA4D2719AF6F9A6FB4C0534" box="[996,1163,1588,1613]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="guggenheim">
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<emphasis id="B932EA87FFA4D2719AF6F9A6FB4C0534" bold="true" box="[996,1163,1588,1613]" italics="true" pageId="49" pageNumber="50">S. guggenheim</emphasis>
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</taxonomicName>
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with lower pectoral fin length (MNRJ 14, 27.1% TL) was also a taxidermal specimen.
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</paragraph>
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<paragraph id="8BF93695FFA4D27199D5F9EDFD0E0432" blockId="49.[151,1436,1073,2010]" pageId="49" pageNumber="50">
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Measurements given by Bigelow and Schroeder (1948) for
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<taxonomicName id="4C464D16FFA4D2719A9AF9EEFBC705EC" box="[904,1024,1660,1685]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="species" species="dumeril">
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<emphasis id="B932EA87FFA4D2719A9AF9EEFBC705EC" bold="true" box="[904,1024,1660,1685]" italics="true" pageId="49" pageNumber="50">S. dumeril</emphasis>
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</taxonomicName>
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present some differences from the
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<typeStatus id="54FD8837FFA4D2719985F933FEC605C1" box="[151,257,1696,1721]" pageId="49" pageNumber="50" type="lectotype">lectotype</typeStatus>
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. They reported a pectoral fin anterior margin length about 2% TL greater than the
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<typeStatus id="54FD8837FFA4D2719DADF933FAEF05C1" box="[1215,1320,1696,1721]" pageId="49" pageNumber="50" type="lectotype">lectotype</typeStatus>
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, 2.7% TL shorter interspiracular distance, 3.2% TL shorter mouth width, 3.6% TL shorter upper caudal lobe, and 4% TL greater distance between pelvic origin to origin of upper caudal lobe. However, as commented above for
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<taxonomicName id="4C464D16FFA4D2719C2AF97AFA5B0479" box="[1336,1436,1769,1793]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="genus">
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<emphasis id="B932EA87FFA4D2719C2AF97AFA5B0479" bold="true" box="[1336,1436,1769,1793]" italics="true" pageId="49" pageNumber="50">Squatina</emphasis>
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</taxonomicName>
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sp., due to observed variation in Southwestern Atlantic
|
||
<taxonomicName id="4C464D16FFA4D2719A05F89EFCBC045D" box="[791,891,1805,1829]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA4D2719A05F89EFCBC045D" bold="true" box="[791,891,1805,1829]" italics="true" pageId="49" pageNumber="50">Squatina</emphasis>
|
||
</taxonomicName>
|
||
and preservational distortions these differences were not considered significant (see
|
||
<tableCitation id="C6C4032EFFA4D2719B23F8A2FD460431" box="[561,641,1841,1866]" captionStart="TABLE 1" captionStartId="13.[125,215,520,543]" captionTargetBox="[139,1905,575,1681]" captionTargetPageId="13" captionText="TABLE 1. Measurements for specimens of Squatina occulta. Abbreviations: n, number of specimens; Min, minimum value; Max, maximum value; SD, standard deviation." httpUri="http://table.plazi.org/id/DF39661DFF98D24D996FFD9BF86C0167" pageId="49" pageNumber="50" tableUuid="DF39661DFF98D24D996FFD9BF86C0167">Tabs. 1</tableCitation>
|
||
,
|
||
<tableCitation id="C6C4032EFFA4D2719B9DF8A2FD590431" box="[655,670,1841,1865]" captionStart="TABLE 3" captionStartId="31.[125,211,531,553]" captionTargetBox="[139,1915,584,1691]" captionTargetPageId="31" captionText="TABLE 3. Measurements for specimens of Squatina guggenheim. Abbreviations: n, number of specimens; Min, minimum value; Max, maximum value; SD, standard deviation." httpUri="http://table.plazi.org/id/DF39661DFF8AD25F996FFD80F8470151" pageId="49" pageNumber="50" tableUuid="DF39661DFF8AD25F996FFD80F8470151">3</tableCitation>
|
||
,
|
||
<tableCitation id="C6C4032EFFA4D2719BB9F8A2FD7C0432" box="[683,699,1841,1866]" captionStart="TABLE 5" captionStartId="41.[125,211,535,558]" captionTargetBox="[139,1918,590,1696]" captionTargetPageId="41" captionText="TABLE 5. Measurements for specimens of Squatina argentina. Abbreviations: n, number of specimens; Min, minimum value; Max, maximum value; SD, standard deviation." httpUri="http://table.plazi.org/id/DF39661DFFBCD269996FFD84F8840156" pageId="49" pageNumber="50" tableUuid="DF39661DFFBCD269996FFD84F8840156">5</tableCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8BF93695FFA4D27299D5F8C7FE7C02D5" blockId="49.[151,1436,1073,2010]" lastBlockId="50.[151,1436,151,429]" lastPageId="50" lastPageNumber="51" pageId="49" pageNumber="50">
|
||
Bigelow and Schroeder (1948) described the morphology of the anterior nasal flap as presenting two elongate barbels, positioned on inner (elongate) and outer (triangular-shaped) extremities of nasal flap, without a medial lobe, which is different from all Southwestern Atlantic
|
||
<taxonomicName id="4C464D16FFA4D2719A2BF80EFC5A04CD" box="[825,925,1949,1973]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="49" pageNumber="50" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA4D2719A2BF80EFC5A04CD" bold="true" box="[825,925,1949,1973]" italics="true" pageId="49" pageNumber="50">Squatina</emphasis>
|
||
</taxonomicName>
|
||
species. The examination of Bigelow and Schroeder’s specimen (USNM 118461) showed that the median lobe is present, but less developed than for other species reported in the present study, similar to the illustration in the original description of Le Sueur (1818). The
|
||
<typeStatus id="54FD8837FFA7D2729985FF2FFF3903AD" box="[151,254,188,213]" pageId="50" pageNumber="51" type="lectotype">lectotype</typeStatus>
|
||
has this feature partially preserved (left nostril only). The nasal barbel in the
|
||
<typeStatus id="54FD8837FFA7D2729DB5FF2FFAC903AD" box="[1191,1294,188,213]" pageId="50" pageNumber="51" type="lectotype">lectotype</typeStatus>
|
||
presents an elongate and spatulate inner lobe and an enlarged outer lobe that is somewhat triangular, more than three times wider than inner lobe, with its distal tip missing; no conspicuous medial lobe was observed in the
|
||
<typeStatus id="54FD8837FFA7D2729C1FFE97FAB00265" box="[1293,1399,260,285]" pageId="50" pageNumber="51" type="lectotype">lectotype</typeStatus>
|
||
, as described by Bigelow and Schroeder (1948). However, this may be preservational. Futher studies are necessary to understand the relevance of this character as a diagnostic feature. Dermal folds are present in the
|
||
<typeStatus id="54FD8837FFA7D2729DC2FEDFFAF0021D" box="[1232,1335,332,357]" pageId="50" pageNumber="51" type="lectotype">lectotype</typeStatus>
|
||
along its entire lateral head margin, without projections of any kind, similar to that described above for other Southwestern Atlantic
|
||
<taxonomicName id="4C464D16FFA7D27299EAFE07FE9B02D4" box="[248,348,404,428]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="50" pageNumber="51" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA7D27299EAFE07FE9B02D4" bold="true" box="[248,348,404,428]" italics="true" pageId="50" pageNumber="51">Squatina</emphasis>
|
||
</taxonomicName>
|
||
species.
|
||
</paragraph>
|
||
<caption id="DF39661DFFA7D2729985F883FEED04FA" httpUri="https://zenodo.org/record/284364/files/figure.png" pageId="50" pageNumber="51" targetBox="[356,1233,477,1781]" targetPageId="50">
|
||
<paragraph id="8BF93695FFA7D2729985F883FEED04FA" blockId="50.[151,1436,1808,1922]" pageId="50" pageNumber="51">
|
||
<emphasis id="B932EA87FFA7D2729985F883FEE5045E" bold="true" box="[151,290,1808,1830]" pageId="50" pageNumber="51">FIGURE 36.</emphasis>
|
||
Morphology of female reproductive system of
|
||
<taxonomicName id="4C464D16FFA7D2729A03F882FCAC045E" box="[785,875,1809,1830]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="50" pageNumber="51" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA7D2729A03F882FCAC045E" box="[785,875,1809,1830]" italics="true" pageId="50" pageNumber="51">Squatina</emphasis>
|
||
</taxonomicName>
|
||
sp. showing right (A) and left (B) functional ovaries, while
|
||
<taxonomicName id="4C464D16FFA7D27299C5F8A3FE71043D" box="[215,438,1839,1861]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="50" pageNumber="51" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA7D27299C5F8A3FE71043D" box="[215,438,1839,1861]" italics="true" pageId="50" pageNumber="51">Squatina guggenheim</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C464D16FFA7D27298F9F8A3FD5F043D" box="[491,664,1839,1861]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="50" pageNumber="51" phylum="Chordata" rank="species" species="occulta">
|
||
<emphasis id="B932EA87FFA7D27298F9F8A3FD5F043D" box="[491,664,1839,1861]" italics="true" pageId="50" pageNumber="51">Squatina occulta</emphasis>
|
||
</taxonomicName>
|
||
present only left ovary functional (D and F, respectively), and right ovary reduced (C and E, respectively). Abbreviations:
|
||
<emphasis id="B932EA87FFA7D2729B92F8DEFD58041B" bold="true" box="[640,671,1869,1891]" pageId="50" pageNumber="51">lov</emphasis>
|
||
, left ovary;
|
||
<emphasis id="B932EA87FFA7D2729A09F8DEFCEA041B" bold="true" box="[795,813,1869,1891]" pageId="50" pageNumber="51">lv</emphasis>
|
||
, liver;
|
||
<emphasis id="B932EA87FFA7D2729A67F8DEFC5F041B" bold="true" box="[885,920,1869,1891]" pageId="50" pageNumber="51">rov</emphasis>
|
||
, right ovary;
|
||
<emphasis id="B932EA87FFA7D2729D30F8DEFB82041B" bold="true" box="[1058,1093,1869,1891]" pageId="50" pageNumber="51">sch</emphasis>
|
||
, stomach;
|
||
<emphasis id="B932EA87FFA7D2729DA1F8DEFB11041B" bold="true" box="[1203,1238,1869,1891]" pageId="50" pageNumber="51">spv</emphasis>
|
||
, spiral valve. Scale bar = 10 mm.”
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="DF39661DFFA6D2739985FBE8FAA107E9" box="[151,1382,1147,1169]" httpUri="https://zenodo.org/record/284365/files/figure.png" pageId="51" pageNumber="52" targetBox="[314,1272,191,1103]" targetPageId="51">
|
||
<paragraph id="8BF93695FFA6D2739985FBE8FAA107E9" blockId="51.[151,1382,1147,1169]" box="[151,1382,1147,1169]" pageId="51" pageNumber="52">
|
||
<emphasis id="B932EA87FFA6D2739985FBE8FED807E9" bold="true" box="[151,287,1147,1169]" pageId="51" pageNumber="52">FIGURE 37.</emphasis>
|
||
Lectotype of
|
||
<taxonomicName id="4C464D16FFA6D27398BEFBEFFD9B07E9" box="[428,604,1147,1169]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA6D27398BEFBEFFD9B07E9" box="[428,604,1147,1169]" italics="true" pageId="51" pageNumber="52">Squatina dumeril</emphasis>
|
||
</taxonomicName>
|
||
(MNHN A-9692, off coast of New York state, United States, 1172 mm TL).
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF93695FFA6D27399D5FB2DFAFD06AB" blockId="51.[151,1436,1214,1995]" pageId="51" pageNumber="52">
|
||
Tooth morphology and rows in the
|
||
<typeStatus id="54FD8837FFA6D2739B49FB2DFD0507AF" box="[603,706,1214,1239]" pageId="51" pageNumber="52" type="lectotype">lectotype</typeStatus>
|
||
are arranged as in
|
||
<taxonomicName id="4C464D16FFA6D2739A8CFB2DFB8207AE" box="[926,1093,1214,1238]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA6D2739A8CFB2DFB8207AE" bold="true" box="[926,1093,1214,1238]" italics="true" pageId="51" pageNumber="52">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C464D16FFA6D2739D6CFB2DFB2907AE" box="[1150,1262,1214,1238]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="occulta">
|
||
<emphasis id="B932EA87FFA6D2739D6CFB2DFB2907AE" bold="true" box="[1150,1262,1214,1238]" italics="true" pageId="51" pageNumber="52">S. occulta</emphasis>
|
||
</taxonomicName>
|
||
, in 20 rows on both upper and lower jaws (tooth formula 11-9/10-10), slightly different from the accounts of Bigelow and Schroeder (1948) and Castro (2011), in which the tooth formula is given as 10-10/9-9. However, as reported for Southwestern Atlantic species above, this may be due to intraspecific variation (see
|
||
<tableCitation id="C6C4032EFFA6D2739D7BFAB9FB78063B" box="[1129,1215,1322,1347]" captionStart="TABLE 2" captionStartId="17.[151,239,152,175]" captionTargetBox="[165,1408,234,752]" captionTargetPageId="17" captionText="TABLE 2. Meristic data for specimens of Squatina occulta. A: MZUSP 41518. B: MNRJ 30191. C: NUPEC 1651. Abbreviations: n, number of specimens; Min, minimum value; Max: maximum value." httpUri="http://table.plazi.org/id/DF39661DFF84D2519985FF0BFBEC03B7" pageId="51" pageNumber="52" tableUuid="DF39661DFF84D2519985FF0BFBEC03B7">Tabs. 2</tableCitation>
|
||
,
|
||
<tableCitation id="C6C4032EFFA6D2739DDCFAB8FB19063B" box="[1230,1246,1323,1347]" captionStart="TABLE 4" captionStartId="33.[151,239,152,175]" captionTargetBox="[165,1410,234,752]" captionTargetPageId="33" captionText="TABLE 4. Meristic data for specimens of Squatina guggenheim. A: MZUSP 43102. B: NUPEC 1649. C: NUPEC 1115. Abbreviations: n, number of specimens; Min, minimum value; Max: maximum value." httpUri="http://table.plazi.org/id/DF39661DFFB4D2619985FF0BFBEC03B7" pageId="51" pageNumber="52" tableUuid="DF39661DFFB4D2619985FF0BFBEC03B7">4</tableCitation>
|
||
,
|
||
<tableCitation id="C6C4032EFFA6D2739DFFFAB9FB3A063B" box="[1261,1277,1322,1347]" captionStart="TABLE 6" captionStartId="43.[151,239,152,175]" captionTargetBox="[165,1408,234,752]" captionTargetPageId="43" captionText="TABLE 6. Meristic data for specimens of Squatina argentina. A: MCP 3754. B: MOFURG 457. C: UERJ 0 975. Abbreviations: n, number of specimens; Min, minimum value; Max: maximum value." httpUri="http://table.plazi.org/id/DF39661DFFBED26B9985FF0BFBEC03B7" pageId="51" pageNumber="52" tableUuid="DF39661DFFBED26B9985FF0BFBEC03B7">6</tableCitation>
|
||
). Upper teeth slightly smaller than lower teeth; on both arches, teeth on inner two vertical rows and on two distalmost vertical rows proportionally smaller than central teeth. Inner, upper rows closer to symphysis than the equivalent rows on lower jaw. Lingual surface (only surface available for study) with a bulky, upright and lingually bent main cusp, without serrations or cusplets. Crown base projecting laterally and with prominent lateral heels (
|
||
<figureCitation id="137D2A10FFA6D2739DDFFA29FAE706AB" box="[1229,1312,1466,1491]" captionStart="FIGURE 38" captionStartId="52.[151,250,1457,1479]" captionTargetBox="[345,1244,537,1426]" captionTargetId="figure@52.[345,1245,537,1426]" captionTargetPageId="52" captionText="FIGURE 38. Morphological details of Squatina dumeril (MNHN A- 9692). A) Dorsal view of head. B) Dorsal view of pectoral fin. C) Labial view of lower jaw showing the tooth rows. D) Apex of pectoral fin outer edge with enlarged dermal denticles showing sexual dimorphism. E) Lateral view of dorsal fins. F) Dorsal view of clasper. Abbreviations: crh, cover rhiphidion; dd, enlarged dermal denticles; rh, rhiphidion. Scale bar = 50 mm." httpUri="https://zenodo.org/record/284366/files/figure.png" pageId="51" pageNumber="52">Fig. 38</figureCitation>
|
||
c).
|
||
</paragraph>
|
||
<paragraph id="8BF93695FFA6D27399D5FA4DFC9404B3" blockId="51.[151,1436,1214,1995]" pageId="51" pageNumber="52">
|
||
Another relevant feature of
|
||
<taxonomicName id="4C464D16FFA6D27398EEFA4DFDA8068E" box="[508,623,1502,1526]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA6D27398EEFA4DFDA8068E" bold="true" box="[508,623,1502,1526]" italics="true" pageId="51" pageNumber="52">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
described by Bigelow and Schroeder (1948, fig. 104c) is the presence of a single row of enlarged and morphologically distinct dorsal midline denticles in juvenile specimens (morphologically similar to
|
||
<taxonomicName id="4C464D16FFA6D27398C4F9B5FDBA0546" box="[470,637,1574,1598]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA6D27398C4F9B5FDBA0546" bold="true" box="[470,637,1574,1598]" italics="true" pageId="51" pageNumber="52">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
). These authors also reported adults of
|
||
<taxonomicName id="4C464D16FFA6D2739D50F9B5FB710546" box="[1090,1206,1574,1598]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA6D2739D50F9B5FB710546" bold="true" box="[1090,1206,1574,1598]" italics="true" pageId="51" pageNumber="52">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
with dorsal midline denticles slightly larger than surrounding denticles. Although the
|
||
<typeStatus id="54FD8837FFA6D2739AB3F9D9FBC0051B" box="[929,1031,1610,1635]" pageId="51" pageNumber="52" type="lectotype">lectotype</typeStatus>
|
||
and non-type specimen examined present dorsal midline denticles only slightly larger than surrounding denticles, confirming Bigelow and Schroeder's (1948) observation, these midiline denticles are slightly different between the MNHN specimens, similar to the differences reported in other species of Southwestern Atlantic
|
||
<taxonomicName id="4C464D16FFA6D2739AF5F925FB8C05B6" box="[999,1099,1718,1742]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA6D2739AF5F925FB8C05B6" bold="true" box="[999,1099,1718,1742]" italics="true" pageId="51" pageNumber="52">Squatina</emphasis>
|
||
</taxonomicName>
|
||
. However, based on our small sample and that there is variation in dermal denticles at least in
|
||
<taxonomicName id="4C464D16FFA6D2739A98F949FBF4058A" box="[906,1075,1754,1778]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA6D2739A98F949FBF4058A" bold="true" box="[906,1075,1754,1778]" italics="true" pageId="51" pageNumber="52">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
, the diagnostic value of dorsal midline denticles in
|
||
<taxonomicName id="4C464D16FFA6D273986BF96DFE2C046E" box="[377,491,1790,1814]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA6D273986BF96DFE2C046E" bold="true" box="[377,491,1790,1814]" italics="true" pageId="51" pageNumber="52">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
cannot yet be determined. The
|
||
<typeStatus id="54FD8837FFA6D2739A5BF96DFC77046F" box="[841,944,1790,1815]" pageId="51" pageNumber="52" type="lectotype">lectotype</typeStatus>
|
||
has dorsal midline denticles similar to other dorsal denticles, but with a slightly enlarged basal plate (about 1.5 times diamenter of other dorsal denticles) and crown with four ridges (
|
||
<figureCitation id="137D2A10FFA6D27398B5F8D5FE3C0427" box="[423,507,1862,1887]" captionStart="FIGURE 39" captionStartId="54.[151,250,568,590]" captionTargetBox="[299,1288,193,549]" captionTargetId="figure@54.[299,1289,193,550]" captionTargetPageId="54" captionText="FIGURE 39. Anterior region of tail in lectotype of S. dumeril (MNHN A- 9692) in dorsal view (A), and dermal denticles of dorsal midline on caudal region, anterior to first dorsal fin (B). Arrows indicate dermal denticles with basal plate slightly larger than surrounding denticles. Anterior to left." httpUri="https://zenodo.org/record/284367/files/figure.png" pageId="51" pageNumber="52">Fig. 39</figureCitation>
|
||
; similar to
|
||
<taxonomicName id="4C464D16FFA6D2739B6BF8D5FD2F0426" box="[633,744,1862,1886]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="occulta">
|
||
<emphasis id="B932EA87FFA6D2739B6BF8D5FD2F0426" bold="true" box="[633,744,1862,1886]" italics="true" pageId="51" pageNumber="52">S. occulta</emphasis>
|
||
</taxonomicName>
|
||
). Non-type specimen with midline denticles morphologically distinct from other dorsal denticles, with enlarged basal plate (1.5 to 2 times diameter of other dorsal denticles), conical crown, crown base with ridges (variable number depending of preservation), and crown-apex without any ridge (similar to midline denticles in adults of
|
||
<taxonomicName id="4C464D16FFA6D2739B8CF821FC8404B2" box="[670,835,1970,1994]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="51" pageNumber="52" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA6D2739B8CF821FC8404B2" bold="true" box="[670,835,1970,1994]" italics="true" pageId="51" pageNumber="52">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8BF93695FFA1D27499D5FF04FD6402A5" blockId="52.[151,1436,151,477]" pageId="52" pageNumber="53">
|
||
Enlarged denticles on dorsal head surface conical, with large basal plate and tall crown, morphologically distinct from other dorsal denticles, and without observable ridges over surface of crown (probably due to preservation). Morphology and distribution of cephalic enlarged denticles very similar to adults of other Southwestern Atlantic
|
||
<taxonomicName id="4C464D16FFA1D27498B4FF6FFDCD026C" box="[422,522,252,276]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA1D27498B4FF6FFDCD026C" bold="true" box="[422,522,252,276]" italics="true" pageId="52" pageNumber="53">Squatina</emphasis>
|
||
</taxonomicName>
|
||
species (two clusters with five or more denticles dorsally on snout region positioned more or less in a row leading toward eyes, one cluster of denticles anterior and another posterior to eyes, and a pair of clusters of denticles between spiracles (also Bigelow and Schroeder, 1948). The cluster of denticles between spiracles distinguishes
|
||
<taxonomicName id="4C464D16FFA1D27498EEFEF3FDA9020F" box="[508,622,351,376]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA1D27498EEFEF3FDA9020F" bold="true" box="[508,622,351,376]" italics="true" pageId="52" pageNumber="53">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
from
|
||
<taxonomicName id="4C464D16FFA1D2749BA3FEF3FCFE0200" box="[689,825,352,376]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="argentina">
|
||
<emphasis id="B932EA87FFA1D2749BA3FEF3FCFE0200" bold="true" box="[689,825,352,376]" italics="true" pageId="52" pageNumber="53">S. argentina</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C464D16FFA1D2749A7CFEF3FC150200" box="[878,978,352,376]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="genus">
|
||
<emphasis id="B932EA87FFA1D2749A7CFEF3FC150200" bold="true" box="[878,978,352,376]" italics="true" pageId="52" pageNumber="53">Squatina</emphasis>
|
||
</taxonomicName>
|
||
sp., in which denticles between spiracles are absent or reduced, respectively (
|
||
<figureCitation id="137D2A10FFA1D2749B3EFE12FD4702E1" box="[556,640,385,410]" captionStart="FIGURE 38" captionStartId="52.[151,250,1457,1479]" captionTargetBox="[345,1244,537,1426]" captionTargetId="figure@52.[345,1245,537,1426]" captionTargetPageId="52" captionText="FIGURE 38. Morphological details of Squatina dumeril (MNHN A- 9692). A) Dorsal view of head. B) Dorsal view of pectoral fin. C) Labial view of lower jaw showing the tooth rows. D) Apex of pectoral fin outer edge with enlarged dermal denticles showing sexual dimorphism. E) Lateral view of dorsal fins. F) Dorsal view of clasper. Abbreviations: crh, cover rhiphidion; dd, enlarged dermal denticles; rh, rhiphidion. Scale bar = 50 mm." httpUri="https://zenodo.org/record/284366/files/figure.png" pageId="52" pageNumber="53">Fig. 38</figureCitation>
|
||
a). Similar to adult males of
|
||
<taxonomicName id="4C464D16FFA1D2749AACFE12FBA302E1" box="[958,1124,385,409]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA1D2749AACFE12FBA302E1" bold="true" box="[958,1124,385,409]" italics="true" pageId="52" pageNumber="53">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
, the
|
||
<typeStatus id="54FD8837FFA1D2749D8EFE12FAC502E2" box="[1180,1282,385,410]" pageId="52" pageNumber="53" type="lectotype">lectotype</typeStatus>
|
||
of
|
||
<taxonomicName id="4C464D16FFA1D2749C3AFE12FA5B02E1" box="[1320,1436,385,409]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA1D2749C3AFE12FA5B02E1" bold="true" box="[1320,1436,385,409]" italics="true" pageId="52" pageNumber="53">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
and non-type specimen examined have enlarged denticles over outer edge of dorsal pectoral fin surface, sparcely grouped, without smaller denticles in between.
|
||
</paragraph>
|
||
<caption id="DF39661DFFA1D2749985FA22FCF4055B" httpUri="https://zenodo.org/record/284366/files/figure.png" pageId="52" pageNumber="53" targetBox="[345,1244,537,1426]" targetPageId="52">
|
||
<paragraph id="8BF93695FFA1D2749985FA22FCF4055B" blockId="52.[151,1436,1457,1571]" pageId="52" pageNumber="53">
|
||
<emphasis id="B932EA87FFA1D2749985FA22FEE706BF" bold="true" box="[151,288,1457,1479]" pageId="52" pageNumber="53">FIGURE 38.</emphasis>
|
||
Morphological details of
|
||
<taxonomicName id="4C464D16FFA1D2749B36FA21FD1506BF" box="[548,722,1457,1479]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA1D2749B36FA21FD1506BF" box="[548,722,1457,1479]" italics="true" pageId="52" pageNumber="53">Squatina dumeril</emphasis>
|
||
</taxonomicName>
|
||
(MNHN A-9692). A) Dorsal view of head. B) Dorsal view of pectoral fin. C) Labial view of lower jaw showing the tooth rows. D) Apex of pectoral fin outer edge with enlarged dermal denticles showing sexual dimorphism. E) Lateral view of dorsal fins. F) Dorsal view of clasper. Abbreviations:
|
||
<emphasis id="B932EA87FFA1D2749DAAFA7CFB1B057D" bold="true" box="[1208,1244,1519,1541]" pageId="52" pageNumber="53">crh</emphasis>
|
||
, cover rhiphidion;
|
||
<emphasis id="B932EA87FFA1D2749985F99EFF74055B" bold="true" box="[151,179,1549,1571]" pageId="52" pageNumber="53">dd</emphasis>
|
||
, enlarged dermal denticles;
|
||
<emphasis id="B932EA87FFA1D27498C3F99EFE2D055B" bold="true" box="[465,490,1549,1571]" pageId="52" pageNumber="53">rh</emphasis>
|
||
, rhiphidion. Scale bar = 50 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF93695FFA1D27499D5F9EAFEB904CA" blockId="52.[151,1436,1657,1970]" pageId="52" pageNumber="53">
|
||
Claspers present in both specimens of
|
||
<taxonomicName id="4C464D16FFA1D2749BA6F9E9FCF505E9" box="[692,818,1657,1682]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA1D2749BA6F9E9FCF505E9" bold="true" box="[692,818,1657,1682]" italics="true" pageId="52" pageNumber="53">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
, proportionally and morphologically similar to
|
||
<taxonomicName id="4C464D16FFA1D2749C95F9E9FEE705CD" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA1D2749C95F9E9FEE705CD" bold="true" italics="true" pageId="52" pageNumber="53">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
, but with slight differences. Clasper groove extending from close to pelvic fin insertion posteriorly to hypopyle. Anterior half of the cover rhipidion and free margin of rhipidion cover the outer half of the clasper glans. Cover rhiphidion of
|
||
<typeStatus id="54FD8837FFA1D2749892F976FE200586" box="[384,487,1765,1790]" pageId="52" pageNumber="53" type="lectotype">lectotype</typeStatus>
|
||
of
|
||
<taxonomicName id="4C464D16FFA1D2749B1DF976FD440585" box="[527,643,1765,1789]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="dumeril">
|
||
<emphasis id="B932EA87FFA1D2749B1DF976FD440585" bold="true" box="[527,643,1765,1789]" italics="true" pageId="52" pageNumber="53">S. dumeril</emphasis>
|
||
</taxonomicName>
|
||
positioned anteriorly and medially close to aperture of hypopyle, and not projecting posterolaterally to rhipidion, as in
|
||
<taxonomicName id="4C464D16FFA1D2749BF9F899FC500459" box="[747,919,1801,1826]" class="Elasmobranchii" family="Squatinidae" genus="Squatina" kingdom="Animalia" order="Squatiniformes" pageId="52" pageNumber="53" phylum="Chordata" rank="species" species="guggenheim">
|
||
<emphasis id="B932EA87FFA1D2749BF9F899FC500459" bold="true" box="[747,919,1801,1826]" italics="true" pageId="52" pageNumber="53">S. guggenheim</emphasis>
|
||
</taxonomicName>
|
||
; however, this feature may be affected by preservation. Bigelow and Schroeder (1948, p. 538, fig. 105b) described a distinctive lateral caudal keel posterior to second dorsal fin (‘caudal peduncle expanded laterally as a low ridge’). This feature could not be clearly observed; however, the
|
||
<typeStatus id="54FD8837FFA1D27498B5F8E6FDC904F6" box="[423,526,1909,1934]" pageId="52" pageNumber="53" type="lectotype">lectotype</typeStatus>
|
||
has an observable lateral expansion on the caudal peduncle posterior to second dorsal fin (
|
||
<figureCitation id="137D2A10FFA1D2749803F80AFEA304CA" box="[273,356,1945,1970]" captionStart="FIGURE 38" captionStartId="52.[151,250,1457,1479]" captionTargetBox="[345,1244,537,1426]" captionTargetId="figure@52.[345,1245,537,1426]" captionTargetPageId="52" captionText="FIGURE 38. Morphological details of Squatina dumeril (MNHN A- 9692). A) Dorsal view of head. B) Dorsal view of pectoral fin. C) Labial view of lower jaw showing the tooth rows. D) Apex of pectoral fin outer edge with enlarged dermal denticles showing sexual dimorphism. E) Lateral view of dorsal fins. F) Dorsal view of clasper. Abbreviations: crh, cover rhiphidion; dd, enlarged dermal denticles; rh, rhiphidion. Scale bar = 50 mm." httpUri="https://zenodo.org/record/284366/files/figure.png" pageId="52" pageNumber="53">Fig. 38</figureCitation>
|
||
e).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |