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<document id="3083F0334C7B9D7A8AEBB115005AFFF4" ID-DOI="10.1111/j.1096-3642.2008.00414.x" ID-ISSN="0024-4082" ID-Zenodo-Dep="5446647" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630461248466" checkinUser="felipe" docAuthor="Deméré, Thomas A. &amp; Berta, Annalisa" docDate="2008" docId="03DB87C1FFB11542FC2DFDC1FB55F8FF" docLanguage="en" docName="j.1096-3642.2008.00414.x.pdf" docOrigin="Zoological Journal of the Linnean Society 154 (2)" docSource="https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00414.x" docStyle="DocumentStyle:0DD8C314D74634CE09062A86991413F8.2:ZoolJLinnSoc.2002-2009.journal_article" docStyleId="0DD8C314D74634CE09062A86991413F8" docStyleName="ZoolJLinnSoc.2002-2009.journal_article" docStyleVersion="2" docTitle="Aetiocetus EMLONG 1966" docType="treatment" docVersion="3" lastPageNumber="312" masterDocId="FFE2FFB9FFB51546FFB2FFCEFF27FF90" masterDocTitle="Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy" masterLastPageNumber="352" masterPageNumber="308" pageNumber="312" updateTime="1699279324145" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:title id="1A419051F35190383BCDEEF76F1D2070">Skull anatomy of the Oligocene toothed mysticete Aetioceus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy</mods:title>
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<mods:namePart id="9133E1A2A365D971006F7ED863E15056">Deméré, Thomas A.</mods:namePart>
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<mods:date id="45C2E5162EA825181028109DCEB726D3">2008</mods:date>
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<treatment id="03DB87C1FFB11542FC2DFDC1FB55F8FF" LSID="urn:lsid:plazi:treatment:03DB87C1FFB11542FC2DFDC1FB55F8FF" httpUri="http://treatment.plazi.org/id/03DB87C1FFB11542FC2DFDC1FB55F8FF" lastPageNumber="312" pageId="4" pageNumber="312">
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<paragraph id="8BCD36D7FFB11542FC2DFDC1FA1BFDB4" blockId="4.[927,1340,526,548]" box="[927,1340,526,548]" pageId="4" pageNumber="312">
<heading id="D08581BBFFB11542FC2DFDC1FA1BFDB4" box="[927,1340,526,548]" centered="true" fontSize="9" level="2" pageId="4" pageNumber="312" reason="2">
<emphasis id="B906EAC5FFB11542FC2DFDC1FCC8FDB2" box="[927,1007,527,548]" italics="true" pageId="4" pageNumber="312">GENUS</emphasis>
<taxonomicName id="4C724D54FFB11542FC4BFDC1FA1BFDB4" authority="EMLONG, 1966" authorityName="EMLONG" authorityYear="1966" box="[1017,1340,526,548]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="genus">
<emphasis id="B906EAC5FFB11542FC4BFDC1FBA0FDB2" box="[1017,1159,527,548]" italics="true" pageId="4" pageNumber="312">AETIOCETUS</emphasis>
<bibRefCitation id="EFE34B26FFB11542FB23FDC1FA1BFDB4" author="Emlong DR" box="[1169,1340,526,548]" pageId="4" pageNumber="312" pagination="1 - 51" refId="ref28411" refString="Emlong DR. 1966. A new archaic cetacean from the Oligocene of northwest Oregon. Bulletin of the Museum of Natural History, University of Oregon 3: 1 - 51." type="journal article" year="1966">EMLONG, 1966</bibRefCitation>
</taxonomicName>
</heading>
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<paragraph id="8BCD36D7FFB11542FC88FDF8FA50FDDB" blockId="4.[826,1399,565,587]" box="[826,1399,565,587]" pageId="4" pageNumber="312">
<emphasis id="B906EAC5FFB11542FC88FDF8FCEBFDDB" box="[826,972,566,587]" italics="true" pageId="4" pageNumber="312">
<typeStatus id="54C98875FFB11542FC88FDF8FC49FDDB" box="[826,878,566,587]" pageId="4" pageNumber="312">Type</typeStatus>
species:
</emphasis>
<taxonomicName id="4C724D54FFB11542FC64FDFBFA50FDDB" authority="Emlong, 1966" authorityName="Emlong" authorityYear="1966" box="[982,1399,565,587]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="cotylalveus">
<emphasis id="B906EAC5FFB11542FC64FDFBFBEAFDDA" box="[982,1229,565,586]" italics="true" pageId="4" pageNumber="312">Aetiocetus cotylalveus</emphasis>
<bibRefCitation id="EFE34B26FFB11542FB6AFDFBFA50FDDB" author="Emlong DR" box="[1240,1399,565,587]" pageId="4" pageNumber="312" pagination="1 - 51" refId="ref28411" refString="Emlong DR. 1966. A new archaic cetacean from the Oligocene of northwest Oregon. Bulletin of the Museum of Natural History, University of Oregon 3: 1 - 51." type="journal article" year="1966">Emlong, 1966</bibRefCitation>
</taxonomicName>
</paragraph>
<paragraph id="8BCD36D7FFB11542FC88FDBCFAA5FD18" blockId="4.[826,1410,626,648]" box="[826,1410,626,648]" pageId="4" pageNumber="312">
<emphasis id="B906EAC5FFB11542FC88FDBCFCEBFD17" box="[826,972,626,647]" italics="true" pageId="4" pageNumber="312">Distribution:</emphasis>
Late Oligocene of Oregon and
<collectingCountry id="F3657647FFB11542FA8EFDBDFAA5FD18" box="[1340,1410,627,648]" name="Japan" pageId="4" pageNumber="312">Japan</collectingCountry>
</paragraph>
<paragraph id="8BCD36D7FFB11542FC88FD61FAB2FCB1" blockId="4.[826,1441,687,801]" pageId="4" pageNumber="312">
<emphasis id="B906EAC5FFB11542FC88FD61FCDEFD55" box="[826,1017,687,709]" italics="true" pageId="4" pageNumber="312">Included species:</emphasis>
<taxonomicName id="4C724D54FFB11542FBB3FD7EFABBFD55" authority="Emlong, 1966" authorityName="Emlong" authorityYear="1966" box="[1025,1436,687,709]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="cotylalveus">
<emphasis id="B906EAC5FFB11542FBB3FD7EFBD1FD54" box="[1025,1270,687,709]" italics="true" pageId="4" pageNumber="312">Aetiocetus cotylalveus</emphasis>
<bibRefCitation id="EFE34B26FFB11542FB4FFD61FABBFD55" author="Emlong DR" box="[1277,1436,687,709]" pageId="4" pageNumber="312" pagination="1 - 51" refId="ref28411" refString="Emlong DR. 1966. A new archaic cetacean from the Oligocene of northwest Oregon. Bulletin of the Museum of Natural History, University of Oregon 3: 1 - 51." type="journal article" year="1966">Emlong, 1966</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C724D54FFB11542FC88FD00FB58FD73" authority="Sawamura" authorityName="Sawamura" box="[826,1151,718,739]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="polydentatus">
<emphasis id="B906EAC5FFB11542FC88FD00FCD4FD73" box="[826,1011,718,739]" italics="true" pageId="4" pageNumber="312">A. polydentatus</emphasis>
Sawamura
</taxonomicName>
in
<bibRefCitation id="EFE34B26FFB11542FB07FD01FABBFD74" author="Barnes LG &amp; Kimura M &amp; Furusawa H &amp; Sawamura H" box="[1205,1436,718,740]" pageId="4" pageNumber="312" pagination="392 - 431" refId="ref28168" refString="Barnes LG, Kimura M, Furusawa H, Sawamura H. 1995. Classification and distribution of Oligocene Aetiocetidae (Mammalia; Cetacea; Mysticeti) from western North America and Japan. Island Arc 3: 392 - 431." type="journal article" year="1995">
Barnes
<emphasis id="B906EAC5FFB11542FAA7FD01FA6AFD73" box="[1301,1357,718,740]" italics="true" pageId="4" pageNumber="312">et al.</emphasis>
, 1995
</bibRefCitation>
,
<taxonomicName id="4C724D54FFB11542FC88FD23FBA8FC92" authority="Kimura &amp; Barnes" authorityName="Kimura &amp; Barnes" box="[826,1167,749,771]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="tomitai">
<emphasis id="B906EAC5FFB11542FC88FD23FC97FC92" box="[826,944,749,770]" italics="true" pageId="4" pageNumber="312">A. tomitai</emphasis>
Kimura &amp; Barnes
</taxonomicName>
in
<bibRefCitation id="EFE34B26FFB11542FB0FFD23FABBFC92" author="Barnes LG &amp; Kimura M &amp; Furusawa H &amp; Sawamura H" box="[1213,1436,748,770]" pageId="4" pageNumber="312" pagination="392 - 431" refId="ref28168" refString="Barnes LG, Kimura M, Furusawa H, Sawamura H. 1995. Classification and distribution of Oligocene Aetiocetidae (Mammalia; Cetacea; Mysticeti) from western North America and Japan. Island Arc 3: 392 - 431." type="journal article" year="1995">
Barnes
<emphasis id="B906EAC5FFB11542FAA8FD23FA76FC92" box="[1306,1361,749,770]" italics="true" pageId="4" pageNumber="312">et al.</emphasis>
, 1995
</bibRefCitation>
,
<taxonomicName id="4C724D54FFB11542FC88FCC2FBAEFCB1" authority="Barnes &amp; Kimura" authorityName="Barnes &amp; Kimura" box="[826,1161,779,801]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="weltoni">
<emphasis id="B906EAC5FFB11542FC88FCC2FC89FCB0" box="[826,942,779,801]" italics="true" pageId="4" pageNumber="312">A. weltoni</emphasis>
Barnes &amp; Kimura
</taxonomicName>
in
<bibRefCitation id="EFE34B26FFB11542FB06FCC2FAB6FCB1" author="Barnes LG &amp; Kimura M &amp; Furusawa H &amp; Sawamura H" box="[1204,1425,779,801]" pageId="4" pageNumber="312" pagination="392 - 431" refId="ref28168" refString="Barnes LG, Kimura M, Furusawa H, Sawamura H. 1995. Classification and distribution of Oligocene Aetiocetidae (Mammalia; Cetacea; Mysticeti) from western North America and Japan. Island Arc 3: 392 - 431." type="journal article" year="1995">
Barnes
<emphasis id="B906EAC5FFB11542FABDFCC2FA60FCB0" box="[1295,1351,779,801]" italics="true" pageId="4" pageNumber="312">et al.</emphasis>
, 1995
</bibRefCitation>
.
</paragraph>
<paragraph id="8BCD36D7FFB11542FC88FC86FA85FC0C" blockId="4.[826,1442,840,924]" pageId="4" pageNumber="312">
<emphasis id="B906EAC5FFB11542FC88FC86FC95FCCD" box="[826,946,840,861]" italics="true" pageId="4" pageNumber="312">Definition:</emphasis>
The monophyletic group containing the most recent common ancestor of
<taxonomicName id="4C724D54FFB11542FB64FCA9FC53FC0B" authorityName="Emlong" authorityYear="1966" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="cotylalveus">
<emphasis id="B906EAC5FFB11542FB64FCA9FC53FC0B" italics="true" pageId="4" pageNumber="312">Aetiocetus cotylalveus</emphasis>
</taxonomicName>
and
<taxonomicName id="4C724D54FFB11542FC00FC48FB42FC0B" box="[946,1125,902,923]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="species" species="polydentatus">
<emphasis id="B906EAC5FFB11542FC00FC48FB42FC0B" box="[946,1125,902,923]" italics="true" pageId="4" pageNumber="312">A. polydentatus</emphasis>
</taxonomicName>
and all of its descendants.
</paragraph>
<paragraph id="8BCD36D7FFB11542FC88FC0DFB55F8FF" blockId="4.[826,1441,963,1903]" pageId="4" pageNumber="312">
<emphasis id="B906EAC5FFB11542FC88FC0DFB02FC48" box="[826,1061,963,984]" italics="true" pageId="4" pageNumber="312">Emended diagnosis:</emphasis>
Small toothed mysticetes with three or fewer small and simple anterior and posterior denticles on posterior upper teeth, anterior and postcanine teeth weakly heterodont (synapomorphies of species of
<taxonomicName id="4C724D54FFB11542FB9DFBF0FB86FBC3" authorityName="EMLONG" authorityYear="1966" box="[1071,1185,1086,1107]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="genus">
<emphasis id="B906EAC5FFB11542FB9DFBF0FB86FBC3" box="[1071,1185,1086,1107]" italics="true" pageId="4" pageNumber="312">Aetiocetus</emphasis>
</taxonomicName>
); triangular anterior extension of parietalfrontal suture, fine vertical enamel ridges only on lingual surface of postcanine teeth, wide diastemata between postcanine teeth, and rostral width at antorbital notch relative to occipital condyle width
<emphasis id="B906EAC5FFB11542FBE3FB19FB78FB7C" box="[1105,1119,1239,1260]" italics="true" pageId="4" pageNumber="312">&gt;</emphasis>
170% (possible synapomorphies of species of
<taxonomicName id="4C724D54FFB11542FB9BFB3BFBBCFA9A" authorityName="EMLONG" authorityYear="1966" box="[1065,1179,1269,1290]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="genus">
<emphasis id="B906EAC5FFB11542FB9BFB3BFBBCFA9A" box="[1065,1179,1269,1290]" italics="true" pageId="4" pageNumber="312">Aetiocetus</emphasis>
</taxonomicName>
); lacrimal with large and lobate dorsal exposure, palate window exposing vomer present and formed by maxilla and premaxilla, and distinct internal narial notch formed by palatine, pterygoid and vomer (synapomorphies of
<taxonomicName id="4C724D54FFB11542FC88FA40FC8BFA33" authorityName="EMLONG" authorityYear="1966" box="[826,940,1422,1443]" class="Mammalia" family="Aetiocetidae" genus="Aetiocetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="genus">
<emphasis id="B906EAC5FFB11542FC88FA40FC8BFA33" box="[826,940,1422,1443]" italics="true" pageId="4" pageNumber="312">Aetiocetus</emphasis>
</taxonomicName>
+
<taxonomicName id="4C724D54FFB11542FC75FA40FB60FA33" authorityName="Russell" authorityYear="1968" box="[967,1095,1422,1443]" class="Mammalia" family="Aetiocetidae" genus="Chonecetus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cetacea" pageId="4" pageNumber="312" phylum="Chordata" rank="genus">
<emphasis id="B906EAC5FFB11542FC75FA40FB60FA33" box="[967,1095,1422,1443]" italics="true" pageId="4" pageNumber="312">Chonecetus</emphasis>
</taxonomicName>
); zygomatic process of squamosal expanded near its anterior margin and at its posterior end but narrow in its middle, short overlap of jugal by squamosal, and coronoid process of dentary well developed with concave posterior margin (aetiocetid synapomorphies); mandibular symphysis not sutured, descending process of maxilla developed as an edentulous infraorbital plate, anterior and postcanine teeth moderately to weakly heterodont or absent (apomorphies shared with toothed and edentulous mysticetes); supraorbital processes of frontal elevated and at same level as cranial vertex, distinct intertemporal region, anteriorly placed external narial opening, and retention of adult dentition (plesiomorphies shared with dorudontine archaeocetes).
</paragraph>
</subSubSection>
</treatment>
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