164 lines
20 KiB
XML
164 lines
20 KiB
XML
<document id="CD1698A2CA443349DB65D302F8F2CE13" ID-DOI="10.5252/g2017n1a1" ID-ISSN="1638-9395" ID-Zenodo-Dep="4535622" ID-ZooBank="urn:lsid:zoobank.org:pub:40D6C996-226D-49BF-8BF2-E07050BE9035" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1613061168347" checkinUser="felipe" docAuthor="Martínez-Cáceres, Manuel, Lambert, Olivier & Muizon, Christian de" docDate="2017" docId="03AA84558005FFBE89DFFA2914ABFB1F" docLanguage="en" docName="Geodiversitas.39.1.7-163.pdf" docOrigin="Geodiversitas 39 (1)" docSource="http://dx.doi.org/10.5252/g2017n1a1" docStyle="DocumentStyle:4DA100580BA89F561A6D37CADC50A8FD.3:Geodiversitas.2015-2017.journal_article.type2" docStyleId="4DA100580BA89F561A6D37CADC50A8FD" docStyleName="Geodiversitas.2015-2017.journal_article.type2" docStyleVersion="3" docTitle="Pontogeneus priscus Leidy 1852" docType="treatment" docVersion="4" lastPageNumber="13" masterDocId="FF93FC2D8003FFB98A60FFBA1534FFD1" masterDocTitle="The anatomy and phylogenetic affinities of Cynthiacetus peruvianus, a large Dorudon-like basilosaurid (Cetacea, Mammalia) from the late Eocene of Peru" masterLastPageNumber="163" masterPageNumber="7" pageNumber="13" updateTime="1698871043285" updateUser="plazi" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:title id="2E07A4D21B4AFF2A877E096EA37AEC8F">The anatomy and phylogenetic affinities of Cynthiacetus peruvianus, a large Dorudon-like basilosaurid (Cetacea, Mammalia) from the late Eocene of Peru</mods:title>
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<mods:namePart id="A82A816CE55A50D007D7DA99B033025A">Martínez-Cáceres, Manuel</mods:namePart>
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<mods:namePart id="2604F62590D984F1905734765111CA20">Lambert, Olivier</mods:namePart>
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<mods:namePart id="E1E0D58E0D8D2EA5CB65A5A148A3AB9F">Muizon, Christian de</mods:namePart>
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<mods:title id="094FD0181A6920C19540BE32E6D3EF18">Geodiversitas</mods:title>
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<mods:part id="FFEC80D71DDF9D878E38939CAA09FB3D">
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<mods:date id="26D4D0A7334442CC85DD20B9BA777D0E">2017</mods:date>
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<mods:number id="54A9F5D5D1243A67422FAB9D741E80FE">2017-03-31</mods:number>
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<mods:number id="85A7D2F87A690E9C9E66717038780086">39</mods:number>
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<mods:identifier id="E2C5029730705CCCB458CF24D855E1D0" type="DOI">10.5252/g2017n1a1</mods:identifier>
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<mods:identifier id="3DEF465302FF0887DC13F570F3DC1249" type="ISSN">1638-9395</mods:identifier>
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<treatment id="03AA84558005FFBE89DFFA2914ABFB1F" ID-DOI="http://doi.org/10.5281/zenodo.4535947" ID-Zenodo-Dep="4535947" LSID="urn:lsid:plazi:treatment:03AA84558005FFBE89DFFA2914ABFB1F" httpUri="http://treatment.plazi.org/id/03AA84558005FFBE89DFFA2914ABFB1F" lastPageId="7" lastPageNumber="13" pageId="6" pageNumber="13">
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<subSubSection id="C31966C88005FFBF89DFFA291029FA7F" box="[959,1309,1427,1454]" pageId="6" pageNumber="13" type="nomenclature">
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<paragraph id="8BBC35438005FFBF89DFFA291029FA7F" blockId="6.[959,1309,1427,1454]" box="[959,1309,1427,1454]" pageId="6" pageNumber="13">
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<heading id="D0F4822F8005FFBF89DFFA291029FA7F" box="[959,1309,1427,1454]" centered="true" fontSize="11" level="2" pageId="6" pageNumber="13" reason="2">
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<taxonomicName id="4C034EC08005FFBF89DFFA291029FA7F" authority="Leidy, 1852" authorityName="Leidy" authorityYear="1852" box="[959,1309,1427,1454]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="6" pageNumber="13" phylum="Chordata" rank="species" species="priscus">
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<emphasis id="B977E9518005FFBF89DFFA2911A0FA7C" bold="true" box="[959,1172,1427,1453]" italics="true" pageId="6" pageNumber="13">Pontogeneus priscus</emphasis>
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<bibRefCitation id="EF9248B28005FFBF8EFBFA291029FA7F" author="LEIDY J." box="[1179,1309,1427,1454]" pageId="6" pageNumber="13" pagination="52" refId="ref100971" refString="LEIDY J. 1852. - Description of Pontogeneus priscus. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 52." type="journal article" year="1852">Leidy, 1852</bibRefCitation>
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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="C31966C88005FFBF894DFA761091F9AC" pageId="6" pageNumber="13" type="materials_examined">
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<paragraph id="8BBC35438005FFBF894DFA7610A3FA32" blockId="6.[813,1431,1484,1508]" box="[813,1431,1484,1508]" pageId="6" pageNumber="13">
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<materialsCitation id="3B6B3F1E8005FFBF894DFA7610A3FA32" box="[813,1431,1484,1508]" collectionCode="ANSP" pageId="6" pageNumber="13" specimenCode="ANSP 13668" specimenCount="1" typeStatus="holotype">
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<typeStatus id="54B88BE18005FFBF894DFA7616A2FA32" box="[813,918,1484,1507]" pageId="6" pageNumber="13" type="holotype">HOLOTYPE</typeStatus>
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. —
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<specimenCode id="DBA59D388005FFBF89A2FA76117CFA35" box="[962,1096,1484,1508]" collectionCode="ANSP" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="6" pageNumber="13">ANSP 13668</specimenCode>
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, isolated middle cervical centrum.
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</materialsCitation>
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</paragraph>
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<paragraph id="8BBC35438005FFBF894DFA461091F9AC" blockId="6.[810,1456,1532,1662]" pageId="6" pageNumber="13">
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TYPE LOCALITY AND HORIZON. — The original description indicates that the
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<typeStatus id="54B88BE18005FFBF892EF9AC1697F9FF" box="[846,931,1558,1582]" pageId="6" pageNumber="13" type="holotype">holotype</typeStatus>
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is “from the Eocene formation of Ouachita,
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<collectingRegion id="49C7FBA18005FFBF8F27F9AC1090F9FF" box="[1351,1444,1558,1582]" country="United States of America" name="Louisiana" pageId="6" pageNumber="13">Louisiana</collectingRegion>
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” (
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<bibRefCitation id="EF9248B28005FFBF8955F98A16FCF999" author="LEIDY J." box="[821,968,1584,1608]" pageId="6" pageNumber="13" pagination="52" refId="ref100971" refString="LEIDY J. 1852. - Description of Pontogeneus priscus. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 52." type="journal article" year="1852">Leidy 1852: 52</bibRefCitation>
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). Recently,
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<bibRefCitation id="EF9248B28005FFBF8E52F98A1185F998" author="UHEN M. D." box="[1074,1201,1584,1609]" pageId="6" pageNumber="13" pagination="157 - 172" refId="ref104724" refString="UHEN M. D. 2005. - A new genus and species of archaeocete whale from Mississippi. Southeastern Geology 43 (3): 157 - 172." type="journal article" year="2005">Uhen (2005)</bibRefCitation>
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pointed out the possibility that it comes from the vicinity of the Caldwell Parish,
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<collectingRegion id="49C7FBA18005FFBF8F2AF9F1109FF9B2" box="[1354,1451,1611,1635]" country="United States of America" name="Louisiana" pageId="6" pageNumber="13">Louisiana</collectingRegion>
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, where the upper Eocene Jackson Group (Eargle 1959) is exposed.
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</paragraph>
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</subSubSection>
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<subSubSection id="C31966C88005FFBE894DF90914ABFB1F" lastPageId="7" lastPageNumber="14" pageId="6" pageNumber="13" type="discussion">
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<paragraph id="8BBC35438005FFBF894DF909169AF91A" blockId="6.[811,1456,1715,2028]" box="[813,942,1715,1741]" pageId="6" pageNumber="13">DISCUSSION</paragraph>
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<paragraph id="8BBC35438005FFBE894DF96814ABFB1F" blockId="6.[811,1456,1715,2028]" lastBlockId="7.[131,777,821,1230]" lastPageId="7" lastPageNumber="14" pageId="6" pageNumber="13">
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<bibRefCitation id="EF9248B28005FFBF894DF9681681F93D" author="LEIDY J." box="[813,949,1746,1773]" pageId="6" pageNumber="13" pagination="52" refId="ref100971" refString="LEIDY J. 1852. - Description of Pontogeneus priscus. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 52." type="journal article" year="1852">Leidy (1852)</bibRefCitation>
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created the taxon
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<taxonomicName id="4C034EC08005FFBF8E0EF969101AF93D" authorityName="Leidy" authorityYear="1852" box="[1134,1326,1747,1772]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="6" pageNumber="13" phylum="Chordata" rank="species" species="priscus">
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<emphasis id="B977E9518005FFBF8E0EF969101AF93D" box="[1134,1326,1747,1772]" italics="true" pageId="6" pageNumber="13">Pontogeneus priscus</emphasis>
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</taxonomicName>
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based on an isolated cervical vertebra (
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<figureCitation id="133829C68005FFBF8E22F94811B5F8DD" box="[1090,1153,1778,1804]" captionStart="FIG" captionStartId="8.[132,143,1098,1116]" captionTargetBox="[221,1367,216,1059]" captionTargetId="figure-453@8.[221,1367,201,1059]" captionTargetPageId="8" captionText="FIG. 4. — Comparison of the middle cervical vertebrae in large basilosaurids: A, MMNS VP455, third cervical vertebra of Cynthiacetus maxwelli; B, UM-WH74, third cervical vertebra of Basilosaurus isis; C, ANSP 13668, holotype of Pontogeneus priscus, probably a C3 or C4 (from Kellogg 1936); D, MffNB uncatalogued, third cervical vertebra of Cynthiacetus sp. (referred to Zeuglodon brachyspondylus by Dames [1894]). Note the large vertebrarterial foramina in C. maxwelli and P. priscus as compared to B. isis." figureDoi="http://doi.org/10.5281/zenodo.4535632" httpUri="https://zenodo.org/record/4535632/files/figure.png" pageId="6" pageNumber="13">Fig. 4</figureCitation>
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), figured by
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<bibRefCitation id="EF9248B28005FFBF8F6FF948109BF8DD" author="KELLOGG R." box="[1295,1455,1778,1804]" pageId="6" pageNumber="13" pagination="1 - 366" refId="ref100521" refString="KELLOGG R. 1936. - A review of the Archaeoceti. Carnegie Institution of Washington Publications 482: 1 - 366." type="journal article" year="1936">Kellogg (1936)</bibRefCitation>
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and interpreted as a fifth cervical.
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<bibRefCitation id="EF9248B28005FFBF8EF5F8A81015F8FD" author="UHEN M. D." box="[1173,1313,1809,1836]" pageId="6" pageNumber="13" pagination="157 - 172" refId="ref104724" refString="UHEN M. D. 2005. - A new genus and species of archaeocete whale from Mississippi. Southeastern Geology 43 (3): 157 - 172." type="journal article" year="2005">Uhen (2005)</bibRefCitation>
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recognized it as a more anterior cervical (C3 or C4) and considered both genus and species as
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<emphasis id="B977E9518005FFBF8E75F8E81190F8BA" box="[1045,1188,1873,1899]" italics="true" pageId="6" pageNumber="13">nomina nuda</emphasis>
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because the original description was not diagnostic and the vertebra could belong to a small specimen of
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<taxonomicName id="4C034EC08005FFBF899EF82B114DF87A" authorityName="Gibbes" authorityYear="1847" box="[1022,1145,1937,1963]" class="Mammalia" family="Basilosauridae" genus="Basilosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="6" pageNumber="13" phylum="Chordata" rank="genus">
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<emphasis id="B977E9518005FFBF899EF82B114DF87A" box="[1022,1145,1937,1963]" italics="true" pageId="6" pageNumber="13">Basilosaurus</emphasis>
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</taxonomicName>
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(indeed, the centrum is quite similar in size to that of UM-WH74, a small
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<taxonomicName id="4C034EC08005FFBF8F60F80B10AAF81A" box="[1280,1438,1969,1995]" class="Mammalia" family="Basilosauridae" genus="Basilosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="6" pageNumber="13" phylum="Chordata" rank="species" species="isis">
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<emphasis id="B977E9518005FFBF8F60F80B10AAF81A" box="[1280,1438,1969,1995]" italics="true" pageId="6" pageNumber="13">Basilosaurus isis</emphasis>
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</taxonomicName>
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). However, it can be evaluated that the vertebarterial foramina in the
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<typeStatus id="54B88BE18004FFBE8AABFC8F141CFC9E" box="[203,296,821,847]" pageId="7" pageNumber="14" type="holotype">holotype</typeStatus>
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of
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<taxonomicName id="4C034EC08004FFBE8B2EFC8C149DFC9E" authorityName="Leidy" authorityYear="1852" box="[334,425,822,847]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="species" species="priscus">
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<emphasis id="B977E9518004FFBE8B2EFC8C149DFC9E" box="[334,425,822,847]" italics="true" pageId="7" pageNumber="14">P. priscus</emphasis>
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</taxonomicName>
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are proportionally larger than in
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<taxonomicName id="4C034EC08004FFBE8AE5FCEF1434FCBE" authorityName="Gibbes" authorityYear="1847" box="[133,256,853,879]" class="Mammalia" family="Basilosauridae" genus="Basilosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="genus">
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<emphasis id="B977E9518004FFBE8AE5FCEF1434FCBE" box="[133,256,853,879]" italics="true" pageId="7" pageNumber="14">Basilosaurus</emphasis>
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</taxonomicName>
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(
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<figureCitation id="133829C68004FFBE8B6EFCEF147EFCBE" box="[270,330,853,879]" captionStart="FIG" captionStartId="8.[132,143,1098,1116]" captionTargetBox="[221,1367,216,1059]" captionTargetId="figure-453@8.[221,1367,201,1059]" captionTargetPageId="8" captionText="FIG. 4. — Comparison of the middle cervical vertebrae in large basilosaurids: A, MMNS VP455, third cervical vertebra of Cynthiacetus maxwelli; B, UM-WH74, third cervical vertebra of Basilosaurus isis; C, ANSP 13668, holotype of Pontogeneus priscus, probably a C3 or C4 (from Kellogg 1936); D, MffNB uncatalogued, third cervical vertebra of Cynthiacetus sp. (referred to Zeuglodon brachyspondylus by Dames [1894]). Note the large vertebrarterial foramina in C. maxwelli and P. priscus as compared to B. isis." figureDoi="http://doi.org/10.5281/zenodo.4535632" httpUri="https://zenodo.org/record/4535632/files/figure.png" pageId="7" pageNumber="14">Fig. 4</figureCitation>
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). Such a feature is diagnostic for the genus
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<taxonomicName id="4C034EC08004FFBE8AE3FCCF1797FC5E" authority="(Martinez-Caceres & Muizon 2011)" baseAuthorityName="Martinez-Caceres & Muizon" baseAuthorityYear="2011" box="[131,675,885,911]" class="Mammalia" family="Basilosauridae" genus="Cynthiacetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="genus">
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<emphasis id="B977E9518004FFBE8AE3FCCF1433FC5E" box="[131,263,885,911]" italics="true" pageId="7" pageNumber="14">Cynthiacetus</emphasis>
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(Martínez-Cáceres & Muizon 2011)
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</taxonomicName>
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. Because of this character
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<taxonomicName id="4C034EC08004FFBE8B5BFC2C14CBFC7E" authorityName="Leidy" authorityYear="1852" box="[315,511,918,943]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="species" species="priscus">
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<emphasis id="B977E9518004FFBE8B5BFC2C14CBFC7E" box="[315,511,918,943]" italics="true" pageId="7" pageNumber="14">Pontogeneus priscus</emphasis>
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</taxonomicName>
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could have closer affinities with
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<taxonomicName id="4C034EC08004FFBE8A87FC0F1453FC1E" baseAuthorityName="Martinez-Caceres & Muizon" baseAuthorityYear="2011" box="[231,359,949,975]" class="Mammalia" family="Basilosauridae" genus="Cynthiacetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="genus">
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<emphasis id="B977E9518004FFBE8A87FC0F1453FC1E" box="[231,359,949,975]" italics="true" pageId="7" pageNumber="14">Cynthiacetus</emphasis>
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</taxonomicName>
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than with
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<taxonomicName id="4C034EC08004FFBE8BBEFC0F176DFC1E" authorityName="Gibbes" authorityYear="1847" box="[478,601,949,975]" class="Mammalia" family="Basilosauridae" genus="Basilosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="genus">
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<emphasis id="B977E9518004FFBE8BBEFC0F176DFC1E" box="[478,601,949,975]" italics="true" pageId="7" pageNumber="14">Basilosaurus</emphasis>
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</taxonomicName>
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(as proposed by
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<bibRefCitation id="EF9248B28004FFBE8AE5FC6E1400FC3E" author="GINGERICH P. D." box="[133,308,980,1007]" pageId="7" pageNumber="14" pagination="161 - 188" refId="ref98691" refString="GINGERICH P. D. 2015. - New partial skeleton and relative brain size in the Late Eocene archaeocete Zygorhiza kochii (Mammalia, Cetacea) from the Pachuta Marl of Alabama, with a note on contemporaneous Pontogeneus brachyspondylus. Contributions from the Museum of Paleontology, University of Michigan 32: 161 - 188. http: // hdl. handle. net / 2027.42 / 113064" type="journal article" year="2015">Gingerich 2015</bibRefCitation>
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). However, such a
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<typeStatus id="54B88BE18004FFBE886CFC6E1758FC3F" box="[524,620,980,1006]" pageId="7" pageNumber="14" type="holotype">holotype</typeStatus>
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(the centrum of an isolated cervical vertebra) is not regarded as diagnostic enough to characterize a basilosaurid taxon and it is suggested here that the binome
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<taxonomicName id="4C034EC08004FFBE8B0CFB8F171AFB9F" authorityName="Leidy" authorityYear="1852" box="[364,558,1077,1102]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="species" species="priscus">
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<emphasis id="B977E9518004FFBE8B0CFB8F171AFB9F" box="[364,558,1077,1102]" italics="true" pageId="7" pageNumber="14">Pontogeneus priscus</emphasis>
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</taxonomicName>
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should only refer to the cervical vertebra described by
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<bibRefCitation id="EF9248B28004FFBE8B9BFBEE17BFFBBE" author="LEIDY J." box="[507,651,1108,1135]" pageId="7" pageNumber="14" pagination="52" refId="ref100971" refString="LEIDY J. 1852. - Description of Pontogeneus priscus. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 52." type="journal article" year="1852">Leidy (1852)</bibRefCitation>
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. Therefore, the genus name and the species name should be regarded as a
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<taxonomicName id="4C034EC08004FFBE8AE4FB2E142DFB7F" authorityName="Cope" authorityYear="1868" box="[132,281,1172,1198]" class="Mammalia" family="Basilosauridae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="family">Basilosauridae</taxonomicName>
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or a Pelagiceti
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<emphasis id="B977E9518004FFBE8BD0FB2F1704FB7F" box="[432,560,1172,1198]" italics="true" pageId="7" pageNumber="14">incertae sedis</emphasis>
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and restricted to the type specimen of
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<emphasis id="B977E9518004FFBE8B5DFB0F14ABFB1F" box="[317,415,1205,1230]" italics="true" pageId="7" pageNumber="14">
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|
<taxonomicName id="4C034EC08004FFBE8B5DFB0F14AEFB1F" authorityName="Leidy" authorityYear="1852" box="[317,410,1205,1230]" class="Mammalia" family="Basilosauridae" genus="Pontogeneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="7" pageNumber="14" phylum="Chordata" rank="species" species="priscus">P. priscus</taxonomicName>
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.
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</emphasis>
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |