195 lines
25 KiB
XML
195 lines
25 KiB
XML
<document id="96837071E4CAC4BCEE6A8F4932AF7769" ID-DOI="10.5252/g2010n2a3" ID-ISSN="1638-9395" ID-Zenodo-Dep="10112549" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630288071495" checkinUser="marcus" docAuthor="Maridet, Olivier, Hugueney, Marguerite & Heissig, Kurt" docDate="2010" docId="03E187940F0B7243CC83FA47FC87F92B" docLanguage="en" docName="Geodiversitas.2010.32.2.221-254.pdf" docOrigin="Geodiversitas 32 (2)" docSource="http://www.bioone.org/doi/abs/10.5252/g2010n2a3" docStyle="DocumentStyle:06460E2025300062676A2DBCBE4CBDE8.3:Geodiversitas.2009-2010.journal_article.type1" docStyleId="06460E2025300062676A2DBCBE4CBDE8" docStyleName="Geodiversitas.2009-2010.journal_article.type1" docStyleVersion="3" docTitle="Eomyidae Winge 1887" docType="treatment" docVersion="4" lastPageNumber="244" masterDocId="FFD8FFEC0F1D7254CC6BFFADFFF2FF8F" masterDocTitle="New data about the diversity of Early Oligocene eomyids (Mammalia, Rodentia) in Western Europe" masterLastPageNumber="254" masterPageNumber="221" pageNumber="243" updateTime="1700033247695" updateUser="ExternalLinkService" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:title id="A9437B2943DF69C43413023CCE2C79B6">New data about the diversity of Early Oligocene eomyids (Mammalia, Rodentia) in Western Europe</mods:title>
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<mods:namePart id="877E89F445DFAF64AB0959F987C14733">Maridet, Olivier</mods:namePart>
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<mods:namePart id="ECF5A5E6DAA9B8857CA6949CF706E27B">Hugueney, Marguerite</mods:namePart>
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<mods:namePart id="03AD41A116956CA0C5D847F3FDFCE5A0">Heissig, Kurt</mods:namePart>
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<mods:title id="22173EDAD3828B31540C4D91796DC243">Geodiversitas</mods:title>
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<mods:part id="A12F39E18326C43C243635F3728B53FA">
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<mods:date id="1B40CD6698F3D94687E3CB5B09A5103D">2010</mods:date>
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<mods:number id="30CA8DF4016425E365178201C89D7465">2010-06-30</mods:number>
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<mods:number id="CC68691C6D298F823B27BA1DBD2F8AB2">32</mods:number>
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<mods:identifier id="94E7F045E4A59BD1D97F63297432E6FB" type="DOI">10.5252/g2010n2a3</mods:identifier>
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<mods:identifier id="F9F00A43D398919822E8BE41482915D9" type="ISSN">1638-9395</mods:identifier>
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<treatment id="03E187940F0B7243CC83FA47FC87F92B" LSID="urn:lsid:plazi:treatment:03E187940F0B7243CC83FA47FC87F92B" httpUri="http://treatment.plazi.org/id/03E187940F0B7243CC83FA47FC87F92B" lastPageId="23" lastPageNumber="244" pageId="22" pageNumber="243">
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<subSubSection id="C35265090F0B7242CC83FA47FE49F9AA" pageId="22" pageNumber="243" type="nomenclature">
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<paragraph id="8BF736820F0B7242CC83FA47FE49F9AA" blockId="22.[232,528,1514,1573]" pageId="22" pageNumber="243">
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<heading id="D0BF81EE0F0B7242CC83FA47FE49F9AA" centered="true" fontSize="11" level="2" pageId="22" pageNumber="243" reason="2">
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<taxonomicName id="4C484D010F0B7242CC83FA47FEA4F98B" authorityName="Winge" authorityYear="1887" box="[232,342,1514,1540]" class="Mammalia" family="Eomyidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="22" pageNumber="243" phylum="Chordata" rank="family">
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<emphasis id="B93CEA900F0B7242CC83FA47FEA4F98B" bold="true" box="[232,342,1514,1540]" pageId="22" pageNumber="243">Eomyidae</emphasis>
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</taxonomicName>
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gen. et sp. indet. (
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<figureCitation id="13732A070F0B7242CD2EF9A7FE71F9AA" box="[325,387,1546,1573]" captionStart="FIG" captionStartId="22.[113,123,1214,1231]" captionTargetBox="[113,1209,215,1171]" captionTargetId="figure-134@22.[113,1209,214,1171]" captionTargetPageId="22" captionText="FIG. 9.— A-D, Eomys sp.teeth,MÖhren 20;A, LP4,BSP 1975 XXII 837;B, LM1/2,BSP1975 XXII 846;C, Rm1/2,BSP 1975XXII 845;D, Lm1/2, BSP 1975 XXII 742;E-G, Eomyidae gen.et sp.indet.teeth,MÖhren 20;E, LM1/2,BSP 1975 XXII 858;F, RP4? RM1/2?,BSP 1975 XXII 857; G, RM2, BSP 1975 XXII 853. Scale bar: 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10130332" httpUri="https://zenodo.org/record/10130332/files/figure.png" pageId="22" pageNumber="243">Fig. 9</figureCitation>
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E-G)
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C35265090F0B7242CC1AF9FBFCF2FAF0" pageId="22" pageNumber="243" type="materials_examined">
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<paragraph id="8BF736820F0B7242CC1AF9FBFE21F92C" blockId="22.[112,646,1622,1699]" pageId="22" pageNumber="243">
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MATERIAL. — Left M1 (
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<collectionCode id="ED59AE470F0B7242CD30F9FBFE7EF9E1" box="[347,396,1622,1646]" pageId="22" pageNumber="243">BSO</collectionCode>
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1975
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<collectionCode id="ED59AE470F0B7242CDA2F9FBFE09F9E1" box="[457,507,1622,1646]" pageId="22" pageNumber="243">XXII</collectionCode>
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858),
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<figureCitation id="13732A070F0B7242CE51F9FBFD70F9E1" box="[570,642,1622,1646]" captionStart="FIG" captionStartId="22.[113,123,1214,1231]" captionTargetBox="[113,1209,215,1171]" captionTargetId="figure-134@22.[113,1209,214,1171]" captionTargetPageId="22" captionText="FIG. 9.— A-D, Eomys sp.teeth,MÖhren 20;A, LP4,BSP 1975 XXII 837;B, LM1/2,BSP1975 XXII 846;C, Rm1/2,BSP 1975XXII 845;D, Lm1/2, BSP 1975 XXII 742;E-G, Eomyidae gen.et sp.indet.teeth,MÖhren 20;E, LM1/2,BSP 1975 XXII 858;F, RP4? RM1/2?,BSP 1975 XXII 857; G, RM2, BSP 1975 XXII 853. Scale bar: 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10130332" httpUri="https://zenodo.org/record/10130332/files/figure.png" pageId="22" pageNumber="243">Fig. 9E</figureCitation>
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; right?P4?M1/2 (
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<collectionCode id="ED59AE470F0B7242CD70F9DDFEB4F907" box="[283,326,1648,1672]" pageId="22" pageNumber="243">BSP</collectionCode>
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1975
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<collectionCode id="ED59AE470F0B7242CDE2F9DDFE49F907" box="[393,443,1648,1672]" pageId="22" pageNumber="243">XXII</collectionCode>
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857),
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<figureCitation id="13732A070F0B7242CE6BF9DDFDB8F907" box="[512,586,1648,1672]" captionStart="FIG" captionStartId="22.[113,123,1214,1231]" captionTargetBox="[113,1209,215,1171]" captionTargetId="figure-134@22.[113,1209,214,1171]" captionTargetPageId="22" captionText="FIG. 9.— A-D, Eomys sp.teeth,MÖhren 20;A, LP4,BSP 1975 XXII 837;B, LM1/2,BSP1975 XXII 846;C, Rm1/2,BSP 1975XXII 845;D, Lm1/2, BSP 1975 XXII 742;E-G, Eomyidae gen.et sp.indet.teeth,MÖhren 20;E, LM1/2,BSP 1975 XXII 858;F, RP4? RM1/2?,BSP 1975 XXII 857; G, RM2, BSP 1975 XXII 853. Scale bar: 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10130332" httpUri="https://zenodo.org/record/10130332/files/figure.png" pageId="22" pageNumber="243">Fig. 9F</figureCitation>
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; right M2 (
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<collectionCode id="ED59AE470F0B7242CCCFF926FF3DF92C" box="[164,207,1675,1699]" pageId="22" pageNumber="243">BSP</collectionCode>
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1975
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<collectionCode id="ED59AE470F0B7242CD65F926FEB2F92C" box="[270,320,1675,1699]" pageId="22" pageNumber="243">XXII</collectionCode>
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853),
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<figureCitation id="13732A070F0B7242CDEAF926FE21F92C" box="[385,467,1675,1699]" captionStart="FIG" captionStartId="22.[113,123,1214,1231]" captionTargetBox="[113,1209,215,1171]" captionTargetId="figure-134@22.[113,1209,214,1171]" captionTargetPageId="22" captionText="FIG. 9.— A-D, Eomys sp.teeth,MÖhren 20;A, LP4,BSP 1975 XXII 837;B, LM1/2,BSP1975 XXII 846;C, Rm1/2,BSP 1975XXII 845;D, Lm1/2, BSP 1975 XXII 742;E-G, Eomyidae gen.et sp.indet.teeth,MÖhren 20;E, LM1/2,BSP 1975 XXII 858;F, RP4? RM1/2?,BSP 1975 XXII 857; G, RM2, BSP 1975 XXII 853. Scale bar: 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10130332" httpUri="https://zenodo.org/record/10130332/files/figure.png" pageId="22" pageNumber="243">Fig. 9G.</figureCitation>
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</paragraph>
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<paragraph id="8BF736820F0B7242CECEFAE1FCF2FAF0" blockId="22.[677,1210,1356,1407]" pageId="22" pageNumber="243">
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LOCALITY. — Möhren 20 (
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<collectingCountry id="F35F76120F0B7242CFC0FAE1FBFEFAEB" box="[939,1036,1356,1380]" name="Germany" pageId="22" pageNumber="243">Germany</collectingCountry>
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); Early Oligocene (
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<collectionCode id="ED59AE470F0B7242CEC0FACAFD23FAF0" box="[683,721,1383,1407]" country="0" name="Mohonk Preserve, Inc." pageId="22" pageNumber="243">MP</collectionCode>
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21).
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</paragraph>
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</subSubSection>
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<subSubSection id="C35265090F0B7243CECEFA3AFF10F9AA" lastPageId="23" lastPageNumber="244" pageId="22" pageNumber="243" type="description">
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<paragraph id="8BF736820F0B7242CECEFA3AFB54FA21" blockId="22.[677,1190,1430,1454]" box="[677,1190,1430,1454]" pageId="22" pageNumber="243">
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TEETH SIZE. — Measurements are given in
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<tableCitation id="C6CA03390F0B7242C820FA3BFB54FA21" box="[1099,1190,1430,1454]" captionStart="TABLE" captionStartId="21.[113,122,532,549]" captionText="TABLE 11. — Measurements (in mm) of the population of Eomyidae gen. et sp. indet. from MÖhren 20. Abbreviations: N, number of teeth; Min, minimal value; Max, maximal value; Mean, mean value; SD, standard deviation." pageId="22" pageNumber="243">Table 11.</tableCitation>
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</paragraph>
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<paragraph id="8BF736820F0B7242CECEFA61FCC7FA6B" blockId="22.[674,1210,1484,1700]" box="[677,821,1484,1510]" pageId="22" pageNumber="243">DESCRIPTION</paragraph>
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<paragraph id="8BF736820F0B7242CECEFA46FC80F92B" blockId="22.[674,1210,1484,1700]" pageId="22" pageNumber="243">
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General characteristics: large buno-lophodont
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<taxonomicName id="4C484D010F0B7242C8F8FA46FD00F9AA" authorityName="Winge" authorityYear="1887" class="Mammalia" family="Eomyidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="22" pageNumber="243" phylum="Chordata" rank="family">Eomyidae</taxonomicName>
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with longitudinally elongated paracone and metacone opposed to rounded lingual tubercles; long mesoloph fused with the paracone, entoloph more or less interrupted behind the mesoloph; synclinal I very long on M2.
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</paragraph>
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<paragraph id="8BF736820F0A7243CCE3FF75FD9AFE1E" blockId="23.[111,649,216,1573]" pageId="23" pageNumber="244">Two teeth present a clearly unknown morphology. The large right M2 is clearly wider than long and conspicuously reduced posteriorly. The crests are massive and cusps weakly developed; the difference on cusps development between labial and lingual part is weaker than in other Bavarian eomyids.</paragraph>
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<paragraph id="8BF736820F0A7243CCE3FE3BFDB1FBA5" blockId="23.[111,649,216,1573]" pageId="23" pageNumber="244">Paracone and metacone are stretched longitudinally and the paracone is fused with the labial extremity of the mesoloph. Protocone and hypocone are rounded lingually and hollowed on their labial face. Th e sinus reaches the middle of the tooth and is slightly oblique antero-labially. The labial anteroloph is very long, starting directly on the anterior arm of the protocone with a right angle, so that syncline I extends over about two thirds of the tooth. Protoloph and mesoloph are roughly parallel and have the same length as anteroloph so that synclines I and II are equal in length. In relationship with the long sinus, syncline III is shorter and opens labially. Th e metaloph, slightly oblique, joins the anterior arm of the hypocone, which is a little antero-labially orientated. Th e posteroloph is well developed and, with wear, joins the metacone and the posterior arm of the hypocone and, with further wear, its lingual part. Syncline IV is a little shorter than the anterior synclines. The entoloph is faintly interrupted behind the mesoloph.</paragraph>
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<paragraph id="8BF736820F0A7243CCE3FB82FDF6FBE5" blockId="23.[111,649,216,1573]" pageId="23" pageNumber="244">The two other teeth display some variations; they are more quadrate with round angles.</paragraph>
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<paragraph id="8BF736820F0A7243CC1AFBC2FDA8FAA7" blockId="23.[111,649,216,1573]" pageId="23" pageNumber="244">– The pattern of the left M1 is very similar to that of the M2 but the anteroloph is shorter and joins the elongated anterior arm of the protocone with a right angle. The sinus is wider and reaches the middle of the occlusal surface and the synclines are shorter, synclines II and IV being the longest;</paragraph>
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<paragraph id="8BF736820F0A7243CC1AFA80FF10F9AA" blockId="23.[111,649,216,1573]" pageId="23" pageNumber="244">– A damaged and worn right tooth possibly a P4 (or M1/2) shows a disorganized pattern. The protoloph is transverse but the metaloph is interrupted, its labial part bending to the posteroloph. The mesoloph is not obvious but seems interrupted, partly parallel to the protoloph and fused with the paracone. Th e entoloph is interrupted behind the mesoloph.</paragraph>
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</subSubSection>
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<subSubSection id="C35265090F0A7243CC1AF9E7FC87F92B" pageId="23" pageNumber="244" type="discussion">
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<paragraph id="8BF736820F0A7243CC1AF9E7FF01F9ED" blockId="23.[111,647,1610,1700]" box="[113,243,1610,1636]" pageId="23" pageNumber="244">DISCUSSION</paragraph>
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<paragraph id="8BF736820F0A7243CC1AF9C4FD76F92B" blockId="23.[111,647,1610,1700]" pageId="23" pageNumber="244">
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The two teeth found in Möhren 20 display a mixture of morphological features known in
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<taxonomicName id="4C484D010F0A7243CE6EF927FDB4F92C" authorityName="Schlosser" authorityYear="1884" box="[517,582,1674,1699]" class="Mammalia" family="Eomyidae" genus="Eomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
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<emphasis id="B93CEA900F0A7243CE6EF927FDB4F92C" box="[517,582,1674,1699]" italics="true" pageId="23" pageNumber="244">Eomys</emphasis>
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</taxonomicName>
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from
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</paragraph>
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<paragraph id="8BF736820F0A7243CECDFF75FBC5FE9C" blockId="23.[674,1212,216,1700]" pageId="23" pageNumber="244">Early Oligocene with features that were previously known only since the late Oligocene.</paragraph>
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<paragraph id="8BF736820F0A7243CED0FEBAFD1FFE5E" blockId="23.[674,1212,216,1700]" pageId="23" pageNumber="244">
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Some features are close to
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<taxonomicName id="4C484D010F0A7243CF82FEB5FBDEFEBE" authorityName="Schlosser" authorityYear="1884" box="[1001,1068,280,305]" class="Mammalia" family="Eomyidae" genus="Eomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
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<emphasis id="B93CEA900F0A7243CF82FEB5FBDEFEBE" box="[1001,1068,280,305]" italics="true" pageId="23" pageNumber="244">Eomys</emphasis>
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</taxonomicName>
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such as: the brachyodont and bunodont teeth with the rounded lingual tubercles and transverse crests joining the anterior part of the protocone and hypocone. Long mesolophs are known only in more recent
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<taxonomicName id="4C484D010F0A7243CECEFE1BFD14FE40" authorityName="Schlosser" authorityYear="1884" box="[677,742,438,463]" class="Mammalia" family="Eomyidae" genus="Eomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
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<emphasis id="B93CEA900F0A7243CECEFE1BFD14FE40" box="[677,742,438,463]" italics="true" pageId="23" pageNumber="244">Eomys</emphasis>
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</taxonomicName>
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.
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</paragraph>
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<paragraph id="8BF736820F0A7243CED0FE78FCB7FB05" blockId="23.[674,1212,216,1700]" pageId="23" pageNumber="244">
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Other features are observed for the first time in the Early Oligocene, the buno-lophodont pattern with elongated paracone and metacone more or less fused within the transverse crests, the long synclines resemble
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<taxonomicName id="4C484D010F0A7243CF68FDF9FBA6FDE0" authority="Schlosser, 1926" authorityName="Schlosser" authorityYear="1926" box="[771,1108,596,623]" class="Mammalia" family="Eomyidae" genus="Pseudotheridomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
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<emphasis id="B93CEA900F0A7243CF68FDF9FC42FDE1" box="[771,944,596,622]" italics="true" pageId="23" pageNumber="244">Pseudotheridomys</emphasis>
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Schlosser, 1926
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</taxonomicName>
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. However the connection of the protoloph with the anterior part of the protocone indicates without doubt that the teeth do not belong to
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<taxonomicName id="4C484D010F0A7243CFD7FD1EFB80FD42" authorityName="Schlosser" authorityYear="1926" box="[956,1138,691,717]" class="Mammalia" family="Eomyidae" genus="Pseudotheridomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
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<emphasis id="B93CEA900F0A7243CFD7FD1EFB80FD42" box="[956,1138,691,717]" italics="true" pageId="23" pageNumber="244">Pseudotheridomys</emphasis>
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</taxonomicName>
|
||
where the protoloph always joins the posterior part of the protocone; it is also generally the case for
|
||
<taxonomicName id="4C484D010F0A7243C824FD5FFCB6FCA2" authority="Engesser, 1987" authorityName="Engesser" authorityYear="1987" class="Mammalia" family="Eomyidae" genus="Eomyodon" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
|
||
<emphasis id="B93CEA900F0A7243C824FD5FFB4BFC83" box="[1103,1209,754,780]" italics="true" pageId="23" pageNumber="244">Eomyodon</emphasis>
|
||
<bibRefCitation id="EFD94B730F0A7243CECEFCBFFCB6FCA2" author="ENGESSER B." box="[677,836,786,813]" pageId="23" pageNumber="244" pagination="943 - 994" refId="ref15912" refString="ENGESSER B. 1987. - New Eomyidae, Dipodidae and Cricetidae (Rodentia, Mammalia) of the lower freshwater Molasse of Switzerland and Savoy. Eclogae Geologicae Helvetiae 80: 943 - 994." type="journal article" year="1987">Engesser, 1987</bibRefCitation>
|
||
</taxonomicName>
|
||
where the protocone is compressed and obliquely directed antero-labially and where the interruption of the entoloph takes place before the mesoloph. Th e greater similarity is with the genus
|
||
<taxonomicName id="4C484D010F0A7243CE83FC3CFB8CFC23" authority="Wu, Meng, Ye & Ni, 2006" authorityName="Wu, Meng, Ye & Ni" authorityYear="2006" box="[744,1150,913,940]" class="Mammalia" family="Eomyidae" genus="Asianeomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
|
||
<emphasis id="B93CEA900F0A7243CE83FC3CFCACFC24" box="[744,862,913,939]" italics="true" pageId="23" pageNumber="244">Asianeomys</emphasis>
|
||
<bibRefCitation id="EFD94B730F0A7243CF0FFC3CFB8CFC23" author="WU W. - Y. & MENG J. & YE J. & NI X. - J." box="[868,1150,913,940]" pageId="23" pageNumber="244" pagination="469 - 479" refId="ref17143" refString="WU W. - Y., MENG J., YE J. & NI X. - J. 2006. - The first finds of eomyids (Rodentia) from the late Oligocene- Early Miocene of the Northern Junggar Basin, China. Beitrage zur Palaontologie 30: 469 - 479." type="journal article" year="2006">Wu, Meng, Ye & Ni, 2006</bibRefCitation>
|
||
</taxonomicName>
|
||
from the late Oligocene/Early Miocene of
|
||
<collectingCountry id="F35F76120F0A7243C850FC1DFB8DFC44" box="[1083,1151,944,971]" name="China" pageId="23" pageNumber="244">China</collectingCountry>
|
||
(
|
||
<bibRefCitation id="EFD94B730F0A7243C8E4FC1DFCEBFC64" author="WU W. - Y. & MENG J. & YE J. & NI X. - J." pageId="23" pageNumber="244" pagination="469 - 479" refId="ref17143" refString="WU W. - Y., MENG J., YE J. & NI X. - J. 2006. - The first finds of eomyids (Rodentia) from the late Oligocene- Early Miocene of the Northern Junggar Basin, China. Beitrage zur Palaontologie 30: 469 - 479." type="journal article" year="2006">
|
||
Wu
|
||
<emphasis id="B93CEA900F0A7243CECEFC7CFD22FC65" box="[677,720,976,1002]" italics="true" pageId="23" pageNumber="244">et al</emphasis>
|
||
. 2006
|
||
</bibRefCitation>
|
||
) and especially with
|
||
<taxonomicName id="4C484D010F0A7243CF97FC7CFC52FB84" authority="Wu, Meng, Ye & Ni, 2006" authorityName="Wu, Meng, Ye & Ni" authorityYear="2006" class="Mammalia" family="Eomyidae" genus="Asianeomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="species" species="fahlbuschi">
|
||
<emphasis id="B93CEA900F0A7243CF97FC7CFB77FC65" box="[1020,1157,976,1003]" italics="true" pageId="23" pageNumber="244">A. fahlbuschi</emphasis>
|
||
<bibRefCitation id="EFD94B730F0A7243C8E0FC7DFC52FB84" author="WU W. - Y. & MENG J. & YE J. & NI X. - J." pageId="23" pageNumber="244" pagination="469 - 479" refId="ref17143" refString="WU W. - Y., MENG J., YE J. & NI X. - J. 2006. - The first finds of eomyids (Rodentia) from the late Oligocene- Early Miocene of the Northern Junggar Basin, China. Beitrage zur Palaontologie 30: 469 - 479." type="journal article" year="2006">Wu, Meng, Ye & Ni, 2006</bibRefCitation>
|
||
</taxonomicName>
|
||
, with its long mesolophs fused with the paracone.
|
||
<taxonomicName id="4C484D010F0A7243CFD0FBBDFB51FBA6" authorityName="Wu, Meng, Ye & Ni" authorityYear="2006" box="[955,1187,1039,1066]" class="Mammalia" family="Eomyidae" genus="Asianeomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="species" species="fahlbuschi">
|
||
<emphasis id="B93CEA900F0A7243CFD0FBBDFB51FBA6" box="[955,1187,1039,1066]" italics="true" pageId="23" pageNumber="244">Asianeomys fahlbuschi</emphasis>
|
||
</taxonomicName>
|
||
is however smaller, also some clear difference can also be observed as the mesoloph connects directly to the protocone.
|
||
</paragraph>
|
||
<paragraph id="8BF736820F0A7243CED0FB23FCFEFA49" blockId="23.[674,1212,216,1700]" pageId="23" pageNumber="244">
|
||
It is noteworthy that, unfortunately, no lower molars with correspondant morphology are associated with the upper ones in Möhren 20. However, we know from
|
||
<taxonomicName id="4C484D010F0A7243CF54FB43FC41FA87" authorityName="Wu, Meng, Ye & Ni" authorityYear="2006" box="[831,947,1262,1288]" class="Mammalia" family="Eomyidae" genus="Asianeomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
|
||
<emphasis id="B93CEA900F0A7243CF54FB43FC41FA87" box="[831,947,1262,1288]" italics="true" pageId="23" pageNumber="244">Asianeomys</emphasis>
|
||
</taxonomicName>
|
||
that the upper and lower molars of eomyids can present a completely different pattern. Consequently we can hypothesize that the lower molars of this taxon could present a pattern more similar to
|
||
<taxonomicName id="4C484D010F0A7243CFAAFAC0FBF0FA09" authorityName="Schlosser" authorityYear="1884" box="[961,1026,1389,1414]" class="Mammalia" family="Eomyidae" genus="Eomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="genus">
|
||
<emphasis id="B93CEA900F0A7243CFAAFAC0FBF0FA09" box="[961,1026,1389,1414]" italics="true" pageId="23" pageNumber="244">Eomys</emphasis>
|
||
</taxonomicName>
|
||
, making it difficult to differentiate from the previously described
|
||
<taxonomicName id="4C484D010F0A7243CECEFA01FCFEFA49" box="[677,780,1451,1478]" class="Mammalia" family="Eomyidae" genus="Eomys" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="species" species="undetermined">
|
||
<emphasis id="B93CEA900F0A7243CECEFA01FD14FA4A" box="[677,742,1452,1477]" italics="true" pageId="23" pageNumber="244">Eomys</emphasis>
|
||
sp.
|
||
</taxonomicName>
|
||
</paragraph>
|
||
<paragraph id="8BF736820F0A7243CED0FA66FC87F92B" blockId="23.[674,1212,216,1700]" pageId="23" pageNumber="244">
|
||
Considering the little material known from Möhren 20 and the clear differences of upper molars with all the eomyids genera known up to now, we propose here that this taxon is a new genus of
|
||
<taxonomicName id="4C484D010F0A7243CF62F9E7FC84F9EA" authorityName="Winge" authorityYear="1887" box="[777,886,1610,1637]" class="Mammalia" family="Eomyidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="23" pageNumber="244" phylum="Chordata" rank="family">Eomyidae</taxonomicName>
|
||
and we let the nomenclature open until the discovery of new material in this locality or another.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |