228 lines
27 KiB
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228 lines
27 KiB
XML
<document id="7BCA7FE162C6BC3F2CABFD0B6B5B2A84" ID-DOI="10.5281/zenodo.4651080" ID-ISSN="1638-9395" ID-Zenodo-Dep="4651080" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1617195131926" checkinUser="felipe" docAuthor="Bianucci, Giovanni, Lambert, Olivier & Post, Klaas" docDate="2007" docId="550B87C3C15CFF81FF287638FF52008B" docLanguage="en" docName="Geodiversitas.29.4.561-618.pdf" docOrigin="Geodiversitas 29 (4)" docStyle="DocumentStyle:94524207C6714CF92F879FE43E306202.3:Geodiversitas.2000-2008.journal_article.type2" docStyleId="94524207C6714CF92F879FE43E306202" docStyleName="Geodiversitas.2000-2008.journal_article.type2" docStyleVersion="3" docTitle="Pterocetus benguelae Bianucci & Lambert & Post 2007, n. sp." docType="treatment" docUuid="CBC6DDAC-5C94-4826-A371-0FF8B0884048" docUuidSource="ZooBank" docVersion="5" lastPageNumber="597" masterDocId="A932FFBBC17EFFA5FFC47277FFBE056E" masterDocTitle="A high diversity in fossil beaked whales (Mammalia, Odontoceti, Ziphiidae) recovered by trawling from the sea floor off South Africa" masterLastPageNumber="618" masterPageNumber="561" pageNumber="595" updateTime="1698897450673" updateUser="plazi" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:mods id="0D6D9CE3C39CF23A89AED4C5E2E96D82" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="B41542C65D1B52E112D50A771B6360D2">
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<mods:title id="3BF3365308BF32B3117E5AC3076387F4">A high diversity in fossil beaked whales (Mammalia, Odontoceti, Ziphiidae) recovered by trawling from the sea floor off South Africa</mods:title>
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</mods:titleInfo>
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<mods:name id="D2D5718B6FF62B02BC239F919AEF69A5" type="personal">
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<mods:role id="CFECC17679E96CD59A95478B5697AE8F">
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<mods:roleTerm id="2D410DB9C163D14A4E9492313F107A7E">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="84F2B4179CEFD088695A1CD21304684B">Bianucci, Giovanni</mods:namePart>
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<mods:affiliation id="DB6FA871AC7DD89EA21CB7224E1DA4E9">Dipartimento di Scienze della Terra, Università di Pisa, via S. Maria, 53, I- 56126 Pisa (Italy) bianucci @ dst. unipi. it</mods:affiliation>
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</mods:name>
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<mods:name id="9F5CD808313A95CE9491E843AD7A024F" type="personal">
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<mods:role id="0EC0A4F2AD699E2F29F5075F770D7F28">
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<mods:roleTerm id="A0AB2D1E6B529A9BF23D4D4BBAA1AC82">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="2988764B93B47756FE4FCEB220708EE7">Lambert, Olivier</mods:namePart>
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<mods:affiliation id="2FAC86D46D3F5EED3F78E0CF9E9C149C">Institut royal des Sciences naturelles de Belgique, Département de Paléontologie, rue Vautier, 29, B- 1000 Brussels (Belgium) olivier. lambert @ naturalsciences. be</mods:affiliation>
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</mods:name>
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<mods:name id="4CECE93137FC42290B8804B99BF1FEEC" type="personal">
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<mods:role id="89491691D8BE7828283817BE9BB528BB">
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<mods:roleTerm id="51ECCAF431ED91E0ABCB31528B7868CF">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="0F145393984DD4B8140F49923127EA7C">Post, Klaas</mods:namePart>
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<mods:affiliation id="62A87E9D4B97EFF0302A7D6504D6BBB6">Natuurhistorisch Museum Rotterdam, P. O. Box 23452, NL- 3001 Rotterdam (The Netherlands) klaas @ fiskano. nl</mods:affiliation>
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<mods:nameIdentifier id="C884F17B3C0168F5DCDD87ACF6F77B9C" type="email">klaas@fiskano.nl</mods:nameIdentifier>
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<mods:typeOfResource id="A8D2512FAF0FEAF71E28D11741098915">text</mods:typeOfResource>
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<mods:titleInfo id="C6619E070B73EC6526B5205DE4144073">
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<mods:title id="C3EF42470C371DA1BE2D36272A5399C1">Geodiversitas</mods:title>
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</mods:titleInfo>
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<mods:part id="0D64146A2E2E0DEB1BA946F82A6F232E">
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<mods:date id="873E9658F249CE1BA17F759E19959592">2007</mods:date>
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<mods:detail id="AC1DAF2ACDA567AD68A314D088FEF947" type="volume">
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<mods:number id="F63D7142442720F99A7A707BAFE2FA2E">29</mods:number>
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</mods:detail>
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<mods:detail id="42462F7E82279037D46A6BB58CAED037" type="issue">
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<mods:number id="D4F90D5A62DA03DE0D3AD961CAAADA2D">4</mods:number>
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</mods:detail>
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<mods:extent id="94862BEF2A39473B8FBB8F8406964CB9" unit="page">
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<mods:start id="958F14217A981246E15857C821E8E3C4">561</mods:start>
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<mods:end id="532604743737840ED68A09B3D1B858AD">618</mods:end>
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</mods:extent>
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</mods:part>
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<mods:classification id="C856574F166DDF4AAA404D977B837C0A">journal article</mods:classification>
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<mods:identifier id="28F04CAD9F4760E9A8BDC139BF4C35E9" type="DOI">10.5281/zenodo.4651080</mods:identifier>
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<mods:identifier id="26BB207F2FB470A2E18679A9C3CB5BAD" type="ISSN">1638-9395</mods:identifier>
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<mods:identifier id="87437D42719B9BF15F5427E476A93F1E" type="Zenodo-Dep">4651080</mods:identifier>
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<mods:identifier id="4DD20885566BC3EF982B782678051637" type="ZooBank">FA38C827-6C5F-4B70-B306-F30C90801A2F</mods:identifier>
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</mods:mods>
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<treatment id="550B87C3C15CFF81FF287638FF52008B" ID-DOI="http://doi.org/10.5281/zenodo.4650963" ID-Zenodo-Dep="4650963" LSID="urn:lsid:zoobank.org:act:CBC6DDAC-5C94-4826-A371-0FF8B0884048" httpUri="http://treatment.plazi.org/id/550B87C3C15CFF81FF287638FF52008B" lastPageId="36" lastPageNumber="597" pageId="34" pageNumber="595">
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<subSubSection id="95B8655EC15CFF87FF287638FDB20107" box="[236,524,1102,1129]" pageId="34" pageNumber="595" type="nomenclature">
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<paragraph id="DD1D36D5C15CFF87FF287638FDB20107" blockId="34.[236,524,1102,1129]" box="[236,524,1102,1129]" pageId="34" pageNumber="595">
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<heading id="865581B9C15CFF87FF287638FDB20107" box="[236,524,1102,1129]" centered="true" fontSize="11" level="2" pageId="34" pageNumber="595" reason="2">
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<taxonomicName id="1AA24D56C15CFF87FF287638FE740107" authority="Bianucci & Lambert & Post, 2007" authorityName="Bianucci & Lambert & Post" authorityYear="2007" box="[236,458,1102,1129]" class="Mammalia" family="Ziphiidae" genus="Pterocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="species" species="benguelae" status="sp. nov.">
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<emphasis id="EFD6EAC7C15CFF87FF287638FE740107" bold="true" box="[236,458,1102,1129]" italics="true" pageId="34" pageNumber="595">Pterocetus benguelae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F4E557BCC15CFF87FE157638FDB20107" box="[465,524,1103,1129]" pageId="34" pageNumber="595" rank="species">n. sp.</taxonomicNameLabel>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="95B8655EC15CFF87FFB576FEFF460013" pageId="34" pageNumber="595" type="materials_examined">
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<paragraph id="DD1D36D5C15CFF87FFB576FEFEBD01BF" blockId="34.[113,647,1160,1234]" pageId="34" pageNumber="595">
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<materialsCitation id="6DCA3C88C15CFF87FFB576FEFEBD01BF" collectionCode="SAM" pageId="34" pageNumber="595" specimenCode="PQ 2803" specimenCount="1" typeStatus="holotype">
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<typeStatus id="02198877C15CFF87FFB576FEFF6501F1" box="[113,219,1161,1184]" pageId="34" pageNumber="595" type="holotype">HOLOTYPE</typeStatus>
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. —
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<collectionCode id="BBB3AE10C15CFF87FECC76FFFE8501CE" box="[264,315,1160,1184]" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">SAM</collectionCode>
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<specimenCode id="8D049EAEC15CFF87FE8776FFFE1C01CE" box="[323,418,1160,1184]" collectionCode="SAM" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">PQ 2803</specimenCode>
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, partial skull including most of the rostrum, the anterior part of the cranium, and the vertex.
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</materialsCitation>
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</paragraph>
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<paragraph id="DD1D36D5C15CFF87FFB5769DFF460013" blockId="34.[113,647,1258,1406]" pageId="34" pageNumber="595">
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REFERRED SPECIMENS. —
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<collectionCode id="BBB3AE10C15CFF87FEAF769DFE20006C" box="[363,414,1258,1282]" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">SAM</collectionCode>
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PQ 69684, partial skull including a part of the rostrum and anterior part of the cranium, trawled west of
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<collectingRegion id="1F66F837C15CFF87FEA9776CFE1E005D" box="[365,416,1307,1331]" country="South Africa" name="Western Cape" pageId="34" pageNumber="595">Cape</collectingRegion>
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Town, Atlantic Ocean;
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<collectionCode id="BBB3AE10C15CFF87FFB57743FF1B0022" box="[113,165,1332,1356]" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">SAM</collectionCode>
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PQ 2163, partial skull including rostrum base and anterior part of the cranium, trawled off the South African coast.
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</paragraph>
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</subSubSection>
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<subSubSection id="95B8655EC15CFF87FFB577E1FE430096" pageId="34" pageNumber="595" type="etymology">
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<paragraph id="DD1D36D5C15CFF87FFB577E1FE430096" blockId="34.[113,647,1430,1528]" pageId="34" pageNumber="595">
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ETYMOLOGY. — From Benguela Current, the oceanic current running along south-east Africa, probably since the Miocene epoch. The
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<typeStatus id="02198877C15CFF87FEAB77B0FE7800B1" box="[367,454,1479,1503]" pageId="34" pageNumber="595" type="holotype">holotype</typeStatus>
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of this species was found off the west coast of
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<collectingCountry id="A5B57645C15CFF87FEBE7797FE470096" box="[378,505,1504,1528]" name="South Africa" pageId="34" pageNumber="595">South Africa</collectingCountry>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="95B8655EC15CFF87FFB57466FEAC0337" pageId="34" pageNumber="595" type="materials_examined">
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<paragraph id="DD1D36D5C15CFF87FFB57466FEAC0337" blockId="34.[113,647,1552,1626]" pageId="34" pageNumber="595">
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<collectionCode id="BBB3AE10C15CFF87FFB57466FEBA0349" box="[113,260,1553,1576]" pageId="34" pageNumber="595">TYPE LOCALITY</collectionCode>
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. — No exact locality. Trawled south of Saldanha Bay, west coast of
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<collectingCountry id="A5B57645C15CFF87FEB5745EFE54032F" box="[369,490,1577,1601]" name="South Africa" pageId="34" pageNumber="595">South Africa</collectingCountry>
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, Atlantic Ocean, depth of
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<specimenCount id="CBA4FD5CC15CFF87FF0E7435FEAC0337" box="[202,274,1602,1626]" pageId="34" pageNumber="595" type="generic">
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<quantity id="1A5A9B30C15CFF87FF0E7435FEB00337" box="[202,270,1602,1626]" metricMagnitude="2" metricUnit="m" metricValue="7.0" pageId="34" pageNumber="595" unit="m" value="700.0">700 m</quantity>
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.
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</specimenCount>
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</paragraph>
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</subSubSection>
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<subSubSection id="95B8655EC15CFF87FFB57404FBA7070D" pageId="34" pageNumber="595" type="diagnosis">
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<paragraph id="DD1D36D5C15CFF87FFB57404FBA7070D" blockId="34.[113,646,1650,1699]" lastBlockId="34.[677,1210,215,611]" pageId="34" pageNumber="595">
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DIAGNOSIS. —
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<taxonomicName id="1AA24D56C15CFF87FEC37404FE7F03E4" authority="Bianucci & Lambert & Post, 2007" authorityName="Bianucci & Lambert & Post" authorityYear="2007" box="[263,449,1650,1674]" class="Mammalia" family="Ziphiidae" genus="Pterocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="species" species="benguelae" status="n. gen., n. sp.">
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<emphasis id="EFD6EAC7C15CFF87FEC37404FE7F03E4" box="[263,449,1650,1674]" italics="true" pageId="34" pageNumber="595">Pterocetus benguelae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F4E557BCC15CFF87FE027404FDF803E4" box="[454,582,1651,1675]" pageId="34" pageNumber="595" rank="species">n. gen., n. sp.</taxonomicNameLabel>
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differs from all other
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<taxonomicName id="1AA24D56C15CFF87FF3974FCFEE203CD" authorityName="Gray" authorityYear="1850" box="[253,348,1675,1699]" class="Mammalia" family="Ziphiidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="family">Ziphiidae</taxonomicName>
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in wider and deeper antorbital notch with much anterolaterally developed preorbital process and from all other
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<taxonomicName id="1AA24D56C15CFF87FC657287FBBC0466" authorityName="Gray" authorityYear="1850" box="[929,1026,240,264]" class="Mammalia" family="Ziphiidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="family">Ziphiidae</taxonomicName>
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, except
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<taxonomicName id="1AA24D56C15CFF87FB887287FB070466" authorityName="Moore" authorityYear="1968" box="[1100,1209,240,264]" class="Mammalia" family="Hyperoodontidae" genus="Indopacetus" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FB887287FB070466" box="[1100,1209,240,264]" italics="true" pageId="34" pageNumber="595">Indopacetus</emphasis>
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</taxonomicName>
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and
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<taxonomicName id="1AA24D56C15CFF87FD08737FFCFB044E" authorityName="du Bus" authorityYear="1868" box="[716,837,264,288]" class="Mammalia" family="Ziphiidae" genus="Ziphirostrum" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FD08737FFCFB044E" box="[716,837,264,288]" italics="true" pageId="34" pageNumber="595">Ziphirostrum</emphasis>
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</taxonomicName>
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, in the premaxillary foramen positioned distinctly anterior to the level of the antorbital notch. It shares with the
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<taxonomicName id="1AA24D56C15CFF87FC94734DFBBE043C" authorityName="Gray" authorityYear="1866" box="[848,1024,314,338]" class="Mammalia" family="Ziphiidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="subFamily" subFamily="Hyperoodontinae">Hyperoodontinae</taxonomicName>
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, and
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<taxonomicName id="1AA24D56C15CFF87FBF0734CFB22043C" authorityName="Oliver" authorityYear="1937" box="[1076,1180,315,338]" class="Mammalia" family="Hyperoodontidae" genus="Tasmacetus" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FBF0734CFB22043C" box="[1076,1180,315,338]" italics="true" pageId="34" pageNumber="595">Tasmacetus</emphasis>
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</taxonomicName>
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an anteromedian depression of the dorsal surface of the nasals and a strong constriction of the ascending process of the premaxilla. It differs from
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<taxonomicName id="1AA24D56C15CFF87FC2B73F3FB2304F2" authorityName="Gray" authorityYear="1866" box="[1007,1181,388,412]" class="Mammalia" family="Ziphiidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="subFamily" subFamily="Hyperoodontinae">Hyperoodontinae</taxonomicName>
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in lesser dorsomedial reabsorbing of the nasals. It differs from
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<taxonomicName id="1AA24D56C15CFF87FD1973C0FCF804A0" authorityName="Oliver" authorityYear="1937" box="[733,838,439,462]" class="Mammalia" family="Hyperoodontidae" genus="Tasmacetus" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FD1973C0FCF804A0" box="[733,838,439,462]" italics="true" pageId="34" pageNumber="595">Tasmacetus</emphasis>
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</taxonomicName>
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in: smaller size; less pointed rostrum with narrower rostrum base; mesorostral groove filled with vomer and a shallower alveolar groove. It further differs from
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<taxonomicName id="1AA24D56C15CFF87FCE67077FC380776" authority="Bianucci & Lambert & Post, 2007" authorityName="Bianucci & Lambert & Post" authorityYear="2007" box="[802,902,512,536]" class="Mammalia" family="Ziphiidae" genus="Xhosacetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus" status="gen. nov.">
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<emphasis id="EFD6EAC7C15CFF87FCE67077FC380776" box="[802,902,512,536]" italics="true" pageId="34" pageNumber="595">Xhosacetus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F4E557BCC15CFF87FC4A7076FC6B0777" box="[910,981,513,537]" pageId="34" pageNumber="595" rank="genus">n. gen.</taxonomicNameLabel>
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in the lower maxillary crest. It differs from
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<taxonomicName id="1AA24D56C15CFF87FCA0706EFC68075F" authorityName="de Muizon" authorityYear="1983" box="[868,982,537,561]" class="Mammalia" family="Ziphiidae" genus="Ninoziphius" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FCA0706EFC68075F" box="[868,982,537,561]" italics="true" pageId="34" pageNumber="595">Ninoziphius</emphasis>
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</taxonomicName>
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in: elevated and narrow rostrum; mesorostral groove filled with ossified vomer and reduction of the maxillary alveoli.
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</paragraph>
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</subSubSection>
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<subSubSection id="95B8655EC15CFF81FD6170E3FF52008B" lastPageId="36" lastPageNumber="597" pageId="34" pageNumber="595" type="description">
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<paragraph id="DD1D36D5C15CFF87FD6170E3FB2C0662" blockId="34.[677,1210,660,1700]" pageId="34" pageNumber="595">
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DESCRIPTION (
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<figureCitation id="45992A50C15CFF87FC8170E2FC2507C1" box="[837,923,661,687]" captionStart="FIG" captionStartId="35.[113,124,1658,1675]" captionTargetBox="[137,1186,220,1588]" captionTargetId="figure-18@35.[130,1211,203,1593]" captionTargetPageId="35" captionText="FIG. 26. — Skull of Pterocetus benguelae n. gen., n. sp. (SAM PQ 2803, holotype): A, dorsal view; B, ventral view; C, lateral view. Scale bar: 10 cm." figureDoi="http://doi.org/10.5281/zenodo.4651136" httpUri="https://zenodo.org/record/4651136/files/figure.png" pageId="34" pageNumber="595">FIGS 26</figureCitation>
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;
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<figureCitation id="45992A50C15CFF87FC6370E2FC7B07C1" box="[935,965,661,687]" captionStart="FIG" captionStartId="36.[112,123,1037,1054]" captionTargetBox="[121,1206,219,996]" captionTargetId="figure-22@36.[112,1201,195,1027]" captionTargetPageId="36" captionText="FIG. 27. — Skull of Pterocetus benguelae n. gen., n. sp. (SAM PQ 2803, holotype): A, detail of the vertex in dorsal view; B, corresponding line drawing; C, anterior view; D, corresponding line drawing. Scale bars: A, B, 5 cm; C, D, 10 cm." figureDoi="http://doi.org/10.5281/zenodo.4651139" httpUri="https://zenodo.org/record/4651139/files/figure.png" pageId="34" pageNumber="595">27</figureCitation>
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;
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<figureCitation id="45992A50C15CFF87FC1570E2FBD007C2" box="[977,1134,660,687]" captionStart="FIG" captionStartId="38.[113,124,731,748]" captionTargetBox="[132,1186,225,684]" captionTargetId="figure-22@38.[117,1205,220,711]" captionTargetPageId="38" captionText="FIG. 29. — A, B, incomplete skull of Pterocetus benguelae n. gen., n. sp.(SAM PQ 69684);A, dorsal view; B, lateral view; C, D, rostrum of P. aff. benguelae (SAM PQ 2751); C, dorsal view; D, lateral view. Scale bar: 10 cm." figureDoi="http://doi.org/10.5281/zenodo.4651143" httpUri="https://zenodo.org/record/4651143/files/figure.png" pageId="34" pageNumber="595">29A, B; TABLE</figureCitation>
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5) None of the three known specimens includes the apex of the rostrum;
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<materialsCitation id="6DCA3C88C15CFF87FCB270A4FB310662" collectionCode="SAM" pageId="34" pageNumber="595" specimenCode="PQ 69684" specimenCount="1" typeStatus="holotype">
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several centimetres are probably missing in the
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<typeStatus id="02198877C15CFF87FC877085FC1C0662" box="[835,930,754,780]" pageId="34" pageNumber="595" type="holotype">holotype</typeStatus>
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and
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<collectionCode id="BBB3AE10C15CFF87FC1C7085FBAF0662" box="[984,1041,754,780]" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">SAM</collectionCode>
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<specimenCode id="8D049EAEC15CFF87FBDC7085FB310662" box="[1048,1167,754,780]" collectionCode="SAM" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="34" pageNumber="595">PQ 69684</specimenCode>
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</materialsCitation>
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.
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</paragraph>
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<paragraph id="DD1D36D5C15CFF87FD7F7165FB890107" blockId="34.[677,1210,660,1700]" pageId="34" pageNumber="595">The rostrum is moderately elongated, slightly higher than wide with lateral margins parallel for most of its length. The mesorostral groove is completely filled by the vomer. A distinct median suture is visible on the vomer for the first centimetres of the rostrum base, indicating a posterior development of the bone by thickening of the lateral walls until their median contact. A shallow alveolar groove is still present without alveoli marks. The acute ventral margin of the alveolar groove extends until the antorbital notch where it ventrally limits a small basin.</paragraph>
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<paragraph id="DD1D36D5C15CFF87FD7F7619FC59034A" blockId="34.[677,1210,660,1700]" pageId="34" pageNumber="595">
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The premaxillary foramen is located distinctly anterior to the antorbital notch, which indicates an elongated premaxillary sac fossa, a character also present in
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<taxonomicName id="1AA24D56C15CFF87FCD576BAFC370189" authorityName="Moore" authorityYear="1968" box="[785,905,1229,1255]" class="Mammalia" family="Hyperoodontidae" genus="Indopacetus" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15CFF87FCD576BAFC370189" box="[785,905,1229,1255]" italics="true" pageId="34" pageNumber="595">Indopacetus</emphasis>
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</taxonomicName>
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. An even more anterior position of the premaxillary foramen is seen for example in
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<taxonomicName id="1AA24D56C15CFF87FD7B777AFCC80049" authorityName="Cuvier" authorityYear="1823" box="[703,886,1293,1319]" class="Mammalia" family="Hyperoodontidae" genus="Ziphius" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="species" species="cavirostris">
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<emphasis id="EFD6EAC7C15CFF87FD7B777AFCC80049" box="[703,886,1293,1319]" italics="true" pageId="34" pageNumber="595">Ziphius cavirostris</emphasis>
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</taxonomicName>
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and
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<taxonomicName id="1AA24D56C15CFF87FC63777AFB0C0049" box="[935,1202,1293,1319]" class="Mammalia" family="Ziphiidae" genus="Ziphirostrum" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="34" pageNumber="595" phylum="Chordata" rank="species" species="marginatum">
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<emphasis id="EFD6EAC7C15CFF87FC63777AFB0C0049" box="[935,1202,1293,1319]" italics="true" pageId="34" pageNumber="595">Ziphirostrum marginatum</emphasis>
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</taxonomicName>
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, but associated with a deep prenarial basin. A large circular maxillary foramen opens anterodorsally just medial to the antorbital notch. The notch is widely open and deep, because of the strong development of the preorbital process, which forms a peculiar anterolateral extension of the cranium. In anterior view, the frontal is visible in the preorbital process between maxilla and lacrimal.
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</paragraph>
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<paragraph id="DD1D36D5C15CFF87FD7F745CFCF603CA" blockId="34.[677,1210,660,1700]" pageId="34" pageNumber="595">In anterior view, the ascending process of the premaxilla is strongly constricted ventral to the vertical, thick and wide, transversely directed premaxillary crest.</paragraph>
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<caption id="89DD665DC15DFF86FFB5740DFEBB03CF" ID-DOI="http://doi.org/10.5281/zenodo.4651136" ID-Zenodo-Dep="4651136" httpUri="https://zenodo.org/record/4651136/files/figure.png" pageId="35" pageNumber="596" startId="35.[113,124,1658,1675]" targetBox="[137,1186,220,1588]" targetPageId="35">
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<paragraph id="DD1D36D5C15DFF86FFB5740DFEBB03CF" blockId="35.[113,1211,1658,1697]" pageId="35" pageNumber="596">
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FIG. 26. — Skull of
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<taxonomicName id="1AA24D56C15DFF86FED0740DFE7403E5" authority="Bianucci & Lambert & Post, 2007" authorityName="Bianucci & Lambert & Post" authorityYear="2007" box="[276,458,1658,1675]" class="Mammalia" family="Ziphiidae" genus="Pterocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="35" pageNumber="596" phylum="Chordata" rank="species" species="benguelae" status="n. gen., n. sp.">
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<emphasis id="EFD6EAC7C15DFF86FED0740DFE7403E5" box="[276,458,1658,1675]" italics="true" pageId="35" pageNumber="596">Pterocetus benguelae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F4E557BCC15DFF86FE15740DFDF703E5" box="[465,585,1658,1675]" pageId="35" pageNumber="596" rank="species">n. gen., n. sp.</taxonomicNameLabel>
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(SAM PQ 2803, holotype):
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<emphasis id="EFD6EAC7C15DFF86FCF4740DFC8303E5" bold="true" box="[816,829,1658,1675]" pageId="35" pageNumber="596">A</emphasis>
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, dorsal view;
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<emphasis id="EFD6EAC7C15DFF86FC70740DFC7F03E5" bold="true" box="[948,961,1658,1675]" pageId="35" pageNumber="596">B</emphasis>
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, ventral view;
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<emphasis id="EFD6EAC7C15DFF86FBF9740DFBF503E5" bold="true" box="[1085,1099,1658,1675]" pageId="35" pageNumber="596">C</emphasis>
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, lateral view. Scale bar: 10 cm.
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</paragraph>
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</caption>
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<caption id="89DD665DC15AFF81FFB4767AFC77015A" ID-DOI="http://doi.org/10.5281/zenodo.4651139" ID-Zenodo-Dep="4651139" httpUri="https://zenodo.org/record/4651139/files/figure.png" pageId="36" pageNumber="597" startId="36.[112,123,1037,1054]" targetBox="[121,1206,219,996]" targetPageId="36">
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<paragraph id="DD1D36D5C15AFF81FFB4767AFC77015A" blockId="36.[112,1209,1037,1076]" pageId="36" pageNumber="597">
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FIG. 27. — Skull of
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<taxonomicName id="1AA24D56C15AFF81FEC8767AFE7F0170" authority="Bianucci & Lambert & Post, 2007" authorityName="Bianucci & Lambert & Post" authorityYear="2007" box="[268,449,1037,1054]" class="Mammalia" family="Ziphiidae" genus="Pterocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="36" pageNumber="597" phylum="Chordata" rank="species" species="benguelae" status="n. gen., n. sp.">
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<emphasis id="EFD6EAC7C15AFF81FEC8767AFE7F0170" box="[268,449,1037,1054]" italics="true" pageId="36" pageNumber="597">Pterocetus benguelae</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F4E557BCC15AFF81FE02767AFD860170" box="[454,568,1037,1054]" pageId="36" pageNumber="597" rank="species">n. gen., n. sp.</taxonomicNameLabel>
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(SAM PQ 2803, holotype):
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<emphasis id="EFD6EAC7C15AFF81FCD2767AFC9D0170" bold="true" box="[790,803,1037,1054]" pageId="36" pageNumber="597">A</emphasis>
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, detail of the vertex in dorsal view;
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<emphasis id="EFD6EAC7C15AFF81FB82767AFBED0170" bold="true" box="[1094,1107,1037,1054]" pageId="36" pageNumber="597">B</emphasis>
|
|
, corresponding line drawing;
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<emphasis id="EFD6EAC7C15AFF81FECD7654FEA9015A" bold="true" box="[265,279,1059,1076]" pageId="36" pageNumber="597">C</emphasis>
|
|
, anterior view;
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|
<emphasis id="EFD6EAC7C15AFF81FE527654FE1A015A" bold="true" box="[406,420,1059,1076]" pageId="36" pageNumber="597">D</emphasis>
|
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, corresponding line drawing. Scale bars: A, B, 5 cm; C, D, 10 cm.
|
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</paragraph>
|
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</caption>
|
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<paragraph id="DD1D36D5C15AFF81FF4C7618FF52008B" blockId="36.[113,647,1134,1509]" pageId="36" pageNumber="597">
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On the moderately elevated vertex, the nasals are wide and pentagon-shaped. Their anterolateral corner extends only a short distance into the premaxillary crest. A vertical groove excavates the anterior margin of each nasal. The right nasal is longer posteriorly than the left. The dorsal surface of the nasals is slightly depressed anteromedially, similar to
|
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<taxonomicName id="1AA24D56C15AFF81FF2F773AFEDB0008" authorityName="Oliver" authorityYear="1937" box="[235,357,1357,1382]" class="Mammalia" family="Hyperoodontidae" genus="Tasmacetus" kingdom="Animalia" order="Cetacea" pageId="36" pageNumber="597" phylum="Chordata" rank="genus">
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<emphasis id="EFD6EAC7C15AFF81FF2F773AFEDB0008" box="[235,357,1357,1382]" italics="true" pageId="36" pageNumber="597">Tasmacetus</emphasis>
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</taxonomicName>
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|
. Posteriorly, the frontals are narrower than the nasals with a minimum length of
|
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<quantity id="1A5A9B30C15AFF81FF2577FBFE8700C8" box="[225,313,1420,1446]" metricMagnitude="-2" metricUnit="m" metricValue="2.1" pageId="36" pageNumber="597" unit="mm" value="21.0">21 mm</quantity>
|
|
. On the vertex, the frontal is contacted by the long posterior projection of the premaxilla.
|
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |