treatments-xml/data/03/BD/B2/03BDB214FFAAC57EFED7FAED64B1F909.xml
2024-06-21 12:22:17 +02:00

220 lines
25 KiB
XML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<document id="6775FB149D94A5E42511D96F0BD32B50" ID-CLB-Dataset="3640" ID-DOI="10.1206/665.1" ID-GBIF-Dataset="da59bea2-040b-4052-b33c-1df67739a29d" ID-ISSN="0003-0082" ID-Zenodo-Dep="4735501" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1620069666063" checkinUser="felipe" docAuthor="Bi, Shundong, Meng, Jin, Wu, Wenyu, Ye, Jie &amp; Ni, Xijun" docDate="2009" docId="03BDB214FFAAC57EFED7FAED64B1F909" docLanguage="en" docName="AmMusNovit.2009.3663.1-18.pdf" docOrigin="American Museum Novitates 3663" docSource="http://www.bioone.org/doi/abs/10.1206/665.1" docStyle="DocumentStyle:70DDF1BDF6846024993F05262BAE3001.3:AmMusNovit.2000-2010.journal_article.type1" docStyleId="70DDF1BDF6846024993F05262BAE3001" docStyleName="AmMusNovit.2000-2010.journal_article.type1" docStyleVersion="3" docTitle="Prodistylomys lii Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni 2009, n. sp." docType="treatment" docVersion="9" lastPageNumber="12" masterDocId="FF84CA6CFFA0C575FFD7FFB46754FFD3" masterDocTitle="New Distylomyid Rodents (Mammalia: Rodentia) from the Early Miocene Suosuoquan Formation of Northern Xinjiang, China" masterLastPageNumber="20" masterPageNumber="1" pageNumber="11" updateTime="1698938204490" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
<mods:mods id="BC75962C20108B875B0B157FC23D031C" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="FA120F4AE0AA2D74CB252A33B99934E9">
<mods:title id="19683EB1D7BF97E23464AC4DA8BE4026">New Distylomyid Rodents (Mammalia: Rodentia) from the Early Miocene Suosuoquan Formation of Northern Xinjiang, China</mods:title>
</mods:titleInfo>
<mods:name id="FF9624A5BBCDCC80147E603A9068756E" type="personal">
<mods:role id="247FA6EDB9FDFC5247186392236AF562">
<mods:roleTerm id="E6EE756EA54A582E088615F479603CA4">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="1F44D30D7D47ABD8B3C3D0B9A48F601A">Bi, Shundong</mods:namePart>
</mods:name>
<mods:name id="D8DBA66E76F8A82B1E8C470560F790ED" type="personal">
<mods:role id="19BB643CE34338C629C43A3017C03C03">
<mods:roleTerm id="47641B1167E78218F7850899DF971CCB">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="06BF273600FF2CED3B997F4CF793E7A9">Meng, Jin</mods:namePart>
</mods:name>
<mods:name id="6C6FDAB22A7974B14638411D77C3C466" type="personal">
<mods:role id="F221B48662120611BC2E08169777AD54">
<mods:roleTerm id="EC9497FFEBBE1BC76AED005DF6DEEC1D">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="2D70D36363826F9A4A187DF8CEA05975">Wu, Wenyu</mods:namePart>
</mods:name>
<mods:name id="1328AB91312E85F387845904C577B90E" type="personal">
<mods:role id="887E90306386928B6DD04E537100879A">
<mods:roleTerm id="5C70129BD1B2B5101105DC813437D4B1">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="EA8E37A4A31D94C4EFDD37F443614EE5">Ye, Jie</mods:namePart>
</mods:name>
<mods:name id="4315C2C78705727D23A61A54125B7C6A" type="personal">
<mods:role id="E143A792F675A07F4BEB647157833701">
<mods:roleTerm id="85C4E42CD465F01C1E3DC3B21AC1E626">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="FA35A65CA12B0D1465E2CE65FD599EA1">Ni, Xijun</mods:namePart>
</mods:name>
<mods:typeOfResource id="5A06C2733F9AEF1A4A3154A1049042FD">text</mods:typeOfResource>
<mods:relatedItem id="FC4A31FEFB568203E5EAF595B657FC86" type="host">
<mods:titleInfo id="414686181951657994D46365446FE8D3">
<mods:title id="55B2F7C9BC712D40E06321F8D7D3A3FD">American Museum Novitates</mods:title>
</mods:titleInfo>
<mods:part id="751406D351CDDB619F3CF75DCB4D6C00">
<mods:date id="53A565BE091065C6AED4B6A0C97DF5F0">2009</mods:date>
<mods:detail id="1F97482616E5F92DA985883E4FC7B1FD" type="pubDate">
<mods:number id="F8CC0687A07253671ECB558A0CE5276E">2009-08-28</mods:number>
</mods:detail>
<mods:detail id="D531710B385FFF4A1E9186B6EF154610" type="volume">
<mods:number id="8763191DC6DC74E75BB3D5517B1B06BF">3663</mods:number>
</mods:detail>
<mods:extent id="04574FC68F9A20C8C5318F6F32977905" unit="page">
<mods:start id="140E950CC9D01D5A389D49C7656267FA">1</mods:start>
<mods:end id="50A9BAE2E78CF9C1DBD1A97BC6F014DF">20</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location id="B65F0C5F3B1741C1BEFDA06A85F3221D">
<mods:url id="0E27604A22159A75A387311D71B4AD9C">http://www.bioone.org/doi/abs/10.1206/665.1</mods:url>
</mods:location>
<mods:classification id="2C131C2E3F9F2FF4275C91CBEDDBC5AC">journal article</mods:classification>
<mods:identifier id="51B3D38A97A4E0351FA34FFE12ABD7EB" type="CLB-Dataset">3640</mods:identifier>
<mods:identifier id="04055CCD8F2607C3A0FDE8CC5CE175D3" type="DOI">10.1206/665.1</mods:identifier>
<mods:identifier id="4BB6EC31EE36150C0EAF23BEBDAECEF6" type="GBIF-Dataset">da59bea2-040b-4052-b33c-1df67739a29d</mods:identifier>
<mods:identifier id="A5CD02A601C50F6A8D7760C8B0938D07" type="ISSN">0003-0082</mods:identifier>
<mods:identifier id="E1FCC55DE4A30F2C61DDF3F33A0D5229" type="Zenodo-Dep">4735501</mods:identifier>
</mods:mods>
<treatment id="03BDB214FFAAC57EFED7FAED64B1F909" ID-DOI="http://doi.org/10.5281/zenodo.5818971" ID-GBIF-Taxon="190304528" ID-Zenodo-Dep="5818971" LSID="urn:lsid:plazi:treatment:03BDB214FFAAC57EFED7FAED64B1F909" httpUri="http://treatment.plazi.org/id/03BDB214FFAAC57EFED7FAED64B1F909" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
<subSubSection id="C30E5089FFAAC57FFED7FAED6559FAA3" box="[256,525,1368,1393]" pageId="10" pageNumber="11" type="nomenclature">
<paragraph id="8BAB0302FFAAC57FFED7FAED6559FAA3" blockId="10.[256,525,1368,1393]" box="[256,525,1368,1393]" pageId="10" pageNumber="11">
<heading id="D0E3B46EFFAAC57FFED7FAED6559FAA3" box="[256,525,1368,1393]" centered="true" fontSize="36" level="2" pageId="10" pageNumber="11" reason="8">
<taxonomicName id="4C147881FFAAC57FFED7FAED66EAFAA2" authority="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni, 2009" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" box="[256,446,1369,1393]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="lii" status="sp. nov.">
<emphasis id="B960DF10FFAAC57FFED7FAED66EAFAA2" box="[256,446,1369,1393]" italics="true" pageId="10" pageNumber="11">Prodistylomys lii</emphasis>
</taxonomicName>
,
<taxonomicNameLabel id="A253626BFFAAC57FFE19FAEC6559FAA3" box="[462,525,1368,1392]" pageId="10" pageNumber="11" rank="species">n. sp.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C30E5089FFAAC57FFEC3FA3D66ACFA72" box="[276,504,1417,1441]" pageId="10" pageNumber="11" type="description">
<paragraph id="8BAB0302FFAAC57FFEC3FA3D66ACFA72" blockId="10.[276,504,1417,1441]" box="[276,504,1417,1441]" pageId="10" pageNumber="11">
<heading id="D0E3B46EFFAAC57FFEC3FA3D66ACFA72" box="[276,504,1417,1441]" centered="true" fontSize="36" level="3" pageId="10" pageNumber="11" reason="7">
<figureCitation id="132F1F87FFAAC57FFEC3FA3D66C9FA72" box="[276,413,1417,1441]" captionStart-0="Fig" captionStart-1="Fig" captionStartId-0="11.[112,150,1478,1500]" captionStartId-1="12.[151,189,561,583]" captionTargetBox-0="[91,1184,210,1444]" captionTargetBox-1="[131,651,210,527]" captionTargetId-0="figure-104@11.[91,1184,209,1445]" captionTargetId-1="figure-627@12.[131,651,209,528]" captionTargetPageId-0="11" captionTargetPageId-1="12" captionText-0="Fig. 6. Occlusal (A), labial (B), and the lingual (C) views of the mandible of Prodistylomys lii (IVPP V16015.1)." captionText-1="Fig. 7. Prodistylomys lii. A. occlusal (A1) and labial (A2) view of right M3 (IVPP V16015.2). B, occlusal view of right p4 (IVPP V16015.3)." figureDoi-0="http://doi.org/10.5281/zenodo.4735514" figureDoi-1="http://doi.org/10.5281/zenodo.4735516" httpUri-0="https://zenodo.org/record/4735514/files/figure.png" httpUri-1="https://zenodo.org/record/4735516/files/figure.png" pageId="10" pageNumber="11">Figures 67</figureCitation>
,
<tableCitation id="C69636B9FFAAC57FFE7CFA3D66ACFA72" box="[427,504,1417,1441]" captionStart="TABLE 1" captionStartId="8.[817,890,567,586]" captionTargetBox="[88,1617,680,1371]" captionText="TABLE 1 Tooth measurements (number of specimens, mean, range, and standard deviation; in mm) of D. burqinensis, P. lii and P. wangae. L, length; W, width; AW, width of the trigon(id); PW, the width of the talon(id)" httpUri="http://table.plazi.org/id/DF6B538AFFA8C57DFCE6FD836339FD53" pageId="10" pageNumber="11" tableUuid="DF6B538AFFA8C57DFCE6FD836339FD53">table 1</tableCitation>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C30E5089FFAAC57FFF4DFA0366D8F9FB" pageId="10" pageNumber="11" type="materials_examined">
<paragraph id="8BAB0302FFAAC57FFF4DFA036524FA3E" blockId="10.[128,654,1463,1754]" pageId="10" pageNumber="11">
<materialsCitation id="3B7C095FFFAAC57FFF4DFA036524FA3E" ID-GBIF-Occurrence="3400176312" collectionCode="IVPP" pageId="10" pageNumber="11" specimenCode="V16015.1" specimenCount="1" typeStatus="holotype">
<typeStatus id="54AFBDA0FFAAC57FFF4DFA036658FA1D" box="[154,268,1463,1487]" pageId="10" pageNumber="11" type="holotype">HOLOTYPE</typeStatus>
:
<collectionCode id="ED059BC7FFAAC57FFEFAFA03663EFA1C" box="[301,362,1463,1487]" country="China" httpUri="http://grbio.org/cool/wd8c-kdma" name="Institute of Vertebrate Paleontology and Paleoanthropology" pageId="10" pageNumber="11">IVPP</collectionCode>
<specimenCode id="DBB2AB79FFAAC57FFEA5FA03668BFA1C" box="[370,479,1463,1487]" collectionCode="V" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="10" pageNumber="11" type="Museum">V16015.1</specimenCode>
, right fragmentary mandible with broken i2, and m1m3.
</materialsCitation>
</paragraph>
<paragraph id="8BAB0302FFAAC57FFF4DFA4766D8F9FB" blockId="10.[128,654,1463,1754]" pageId="10" pageNumber="11">
REFERRED MATERIAL:
<collectionCode id="ED059BC7FFAAC57FFE75FA47668BF9D8" box="[418,479,1523,1547]" country="China" httpUri="http://grbio.org/cool/wd8c-kdma" name="Institute of Vertebrate Paleontology and Paleoanthropology" pageId="10" pageNumber="11">IVPP</collectionCode>
<collectionCode id="ED059BC7FFAAC57FFE33FA4766A3F9D8" box="[484,503,1523,1547]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="10" pageNumber="11" type="Museum">V</collectionCode>
16015.2, right M3;
<collectionCode id="ED059BC7FFAAC57FFF61F9A4679DF9FB" box="[182,201,1552,1576]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="10" pageNumber="11" type="Museum">V</collectionCode>
16015.3, right p4.
</paragraph>
</subSubSection>
<subSubSection id="C30E5089FFAAC57FFF4DF99B66EAF952" pageId="10" pageNumber="11" type="description">
<paragraph id="8BAB0302FFAAC57FFF4DF99B66EAF952" blockId="10.[128,654,1463,1754]" pageId="10" pageNumber="11">
STRATIGRAPHIC AND GEOGRAPHIC PROVENANCE: Suosuoquan Formation of Chibaerwoyi,
<collectingRegion id="49D0CDE0FFAAC57FFF75F9DD6652F952" box="[162,262,1641,1665]" country="China" name="Xinjiang Uygur" pageId="10" pageNumber="11">Xinjiang</collectingRegion>
. Early Miocene.
</paragraph>
</subSubSection>
<subSubSection id="C30E5089FFAAC57FFF4DF93366CFF909" pageId="10" pageNumber="11" type="etymology">
<paragraph id="8BAB0302FFAAC57FFF4DF93366CFF909" blockId="10.[128,654,1463,1754]" pageId="10" pageNumber="11">ETYMOLOGY: Named for Professor Li Chuankui for his many contributions to the study of Asiatic rodents.</paragraph>
</subSubSection>
<subSubSection id="C30E5089FFAAC57EFD0FFF676535F9B0" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11" type="diagnosis">
<paragraph id="8BAB0302FFAAC57FFD0FFF67641FFE97" blockId="10.[701,1228,211,1754]" pageId="10" pageNumber="11">
DIAGNOSIS: Similar to
<taxonomicName id="4C147881FFAAC57FFC24FF6763F3FF38" authorityName="Wang and Qi" authorityYear="1989" box="[1011,1191,211,235]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFC24FF6763F3FF38" box="[1011,1191,211,235]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
in size, but differs in having well-developed roots, the absence of the metaflexid, and less hypsodonty.
</paragraph>
<paragraph id="8BAB0302FFAAC57FFD0FFEFE642AFD83" blockId="10.[701,1228,211,1754]" pageId="10" pageNumber="11">
COMPARATIVE DESCRIPTION: The only preserved upper cheek tooth V16015.2 is a heavily worn M3 (fig. 7A). The M3 trigon is kidney shaped, whereas it is trapezoidal in
<taxonomicName id="4C147881FFAAC57FFB98FE10646CFE09" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" class="Mammalia" family="Ctenodactylidae" genus="Distylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="burqinensis">
<emphasis id="B960DF10FFAAC57FFB98FE10646CFE09" italics="true" pageId="10" pageNumber="11">Distylomys burqinensis</emphasis>
</taxonomicName>
. The talon is much narrower than the trigon. At this stage of wear, the flexi are already fused and form a fossette. No cement is present in the fossette. The two strong roots of M3 are fused.
</paragraph>
<paragraph id="8BAB0302FFAAC57FFD0FFDE36398FC22" blockId="10.[701,1228,211,1754]" pageId="10" pageNumber="11">
The mandible (fig. 6) is similar to that of the
<typeStatus id="54AFBDA0FFAAC57FFD6AFDC065B9FD5F" box="[701,749,628,652]" pageId="10" pageNumber="11">type</typeStatus>
species,
<taxonomicName id="4C147881FFAAC57FFC82FDC16350FD5E" authorityName="Wang and Qi" authorityYear="1989" box="[853,1028,629,653]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFC82FDC16350FD5E" box="[853,1028,629,653]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
. The diastema is short and shallow. The mental foramen opens dorsally and lies on the dorsal side of the diastema. In contrast, in
<taxonomicName id="4C147881FFAAC57FFC3CFD7A63C8FD35" authorityName="Wang and Qi" authorityYear="1989" box="[1003,1180,718,742]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFC3CFD7A63C8FD35" box="[1003,1180,718,742]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
the mental foramen opens labially and occurs near the level of the dorsal shelf. The lower incisor is short, extending posteriorly to below m2 as in
<taxonomicName id="4C147881FFAAC57FFD6AFCF1643CFC8E" authorityName="Wang and Qi" authorityYear="1989" box="[701,872,837,861]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFD6AFCF1643CFC8E" box="[701,872,837,861]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
and
<taxonomicName id="4C147881FFAAC57FFC76FCF16337FC8E" authorityName="Wang" authorityYear="1988" box="[929,1123,837,861]" class="Mammalia" family="Ctenodactylidae" genus="Distylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="qianlishanensis">
<emphasis id="B960DF10FFAAC57FFC76FCF16337FC8E" box="[929,1123,837,861]" italics="true" pageId="10" pageNumber="11">D. qianlishanensis</emphasis>
</taxonomicName>
, whereas it extends as far as m
<quantity id="4CECAEE7FFAAC57FFC71FCD66499FCA9" box="[934,973,866,890]" metricMagnitude="-2" metricUnit="m" metricValue="7.62" pageId="10" pageNumber="11" unit="in" value="3.0">3 in</quantity>
<taxonomicName id="4C147881FFAAC57FFC03FCD76339FCA8" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" box="[980,1133,867,891]" class="Mammalia" family="Ctenodactylidae" genus="Distylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="burqinensis">
<emphasis id="B960DF10FFAAC57FFC03FCD76339FCA8" box="[980,1133,867,891]" italics="true" pageId="10" pageNumber="11">D. burqinensis</emphasis>
</taxonomicName>
. The tip of the lower incisor is broken and its cross section is subrectangular with flat anterior and lingual walls. The enamel thins and extends a short distance onto the labial and lingual walls.
</paragraph>
<paragraph id="8BAB0302FFAAC57FFD0FFC4C63D3F9B1" blockId="10.[701,1228,211,1754]" pageId="10" pageNumber="11">
The p4 is not preserved in the
<typeStatus id="54AFBDA0FFAAC57FFBE4FC4C63CDFBC3" box="[1075,1177,1016,1040]" pageId="10" pageNumber="11" type="holotype">holotype</typeStatus>
, but the alveolus indicates presence of three roots (fig. 6). The only known p4 is IVPP V16015.3 (fig. 7B). The trigonid is shaped like an isosceles triangle with gently concave labial and lingual margins. The anterolophid is short and blunt. The hypoflexid extends only halfway down the tooth, whereas the mesoflexid is much longer, extending to the root. The flexids are U-shaped and have no cement. In
<taxonomicName id="4C147881FFAAC57FFB65FAB7641EFAEA" authorityName="Wang and Qi" authorityYear="1989" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFB65FAB7641EFAEA" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
, the flexids are V-shaped and cement filled. The talonid is wider than the trigonid; the talonid is slightly broken posteriorly, but what remains suggests absence of a metaflexid. This p4 has 3 roots. Although the p4 crown morphology is similar to that of dp4 of
<taxonomicName id="4C147881FFAAC57FFD0CFA6064DCFA3F" authorityName="Wang and Qi" authorityYear="1989" box="[731,904,1492,1516]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFD0CFA6064DCFA3F" box="[731,904,1492,1516]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
except for the absence of the posterolophid, we prefer to consider this tooth as p4 because the roots are not splayed apart. If so interpreted, it is probable that p4 and dp4 have similar general crown morphology.
</paragraph>
<paragraph id="8BAB0302FFAAC57EFD0FF9DD6535F9B0" blockId="10.[701,1228,211,1754]" lastBlockId="11.[88,614,1552,1754]" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
The lower molars have the same bilophodont occlusal pattern as
<taxonomicName id="4C147881FFAAC57FFC36F93363C7F94C" authorityName="Wang and Qi" authorityYear="1989" box="[993,1171,1671,1695]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="10" pageNumber="11" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFAAC57FFC36F93363C7F94C" box="[993,1171,1671,1695]" italics="true" pageId="10" pageNumber="11">P. xinjiangensis</emphasis>
</taxonomicName>
, but lack the posterolophid. The flexids extend only to the alveolus, clearly showing welldeveloped roots in all the lower molars. In
<taxonomicName id="4C147881FFABC57EFD9AF9A567B2F995" authorityName="Wang and Qi" authorityYear="1989" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFABC57EFD9AF9A567B2F995" italics="true" pageId="11" pageNumber="12">P. xinjiangensis</emphasis>
</taxonomicName>
, the flexids extend all the way into the tooth base, indicating reduced roots.
</paragraph>
</subSubSection>
<caption id="DF6B538AFFABC57EFFA7FA72665AFA24" ID-DOI="http://doi.org/10.5281/zenodo.4735514" ID-Zenodo-Dep="4735514" httpUri="https://zenodo.org/record/4735514/files/figure.png" pageId="11" pageNumber="12" startId="11.[112,150,1478,1500]" targetBox="[91,1184,210,1444]" targetPageId="11">
<paragraph id="8BAB0302FFABC57EFFA7FA72665AFA24" blockId="11.[88,1187,1478,1527]" pageId="11" pageNumber="12">
Fig. 6. Occlusal (
<emphasis id="B960DF10FFABC57EFEE9FA72661BFA0F" bold="true" box="[318,335,1478,1500]" pageId="11" pageNumber="12">A</emphasis>
), labial (
<emphasis id="B960DF10FFABC57EFE6DFA72669EFA0F" bold="true" box="[442,458,1478,1500]" pageId="11" pageNumber="12">B</emphasis>
), and the lingual (
<emphasis id="B960DF10FFABC57EFD72FA7265E2FA0F" bold="true" box="[677,694,1478,1500]" pageId="11" pageNumber="12">C</emphasis>
) views of the mandible of
<taxonomicName id="4C147881FFABC57EFC24FA7363F7FA0F" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" box="[1011,1187,1479,1500]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="lii">Prodistylomys lii</taxonomicName>
(IVPP V16015.1).
</paragraph>
</caption>
<subSubSection id="C30E5089FFABC57EFFA5F9DE64B1F909" pageId="11" pageNumber="12" type="discussion">
<paragraph id="8BAB0302FFABC57EFFA5F9DE64B1F909" blockId="11.[88,614,1552,1754]" lastBlockId="11.[662,1188,1552,1754]" pageId="11" pageNumber="12">
COMMENTS: In the Chibaerwoyi locality, fossils were mostly collected from beds A and B (
<quantity id="4CECAEE7FFABC57EFFADF9106786F96F" box="[122,210,1700,1724]" metricMagnitude="0" metricUnit="m" metricValue="9.5" metricValueMax="12.0" metricValueMin="7.0" pageId="11" pageNumber="12" unit="m" value="9.5" valueMax="12.0" valueMin="7.0">712 m</quantity>
, and
<quantity id="4CECAEE7FFABC57EFEC5F9106627F96F" box="[274,371,1700,1724]" metricMagnitude="1" metricUnit="m" metricValue="1.75" metricValueMax="2.1" metricValueMin="1.4" pageId="11" pageNumber="12" unit="m" value="17.5" valueMax="21.0" valueMin="14.0">1421 m</quantity>
from the base of the formation, respectively).
<taxonomicName id="4C147881FFABC57EFE57F97666E9F909" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" box="[384,445,1730,1754]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="lii">
<emphasis id="B960DF10FFABC57EFE57F97666E9F909" box="[384,445,1730,1754]" italics="true" pageId="11" pageNumber="12">P. lii</emphasis>
</taxonomicName>
was collected from Bed A. The exact stratigraphic level of
<taxonomicName id="4C147881FFABC57EFB5CF9A56470F995" authorityName="Wang and Qi" authorityYear="1989" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFABC57EFB5CF9A56470F995" italics="true" pageId="11" pageNumber="12">P. xinjiangensis</emphasis>
</taxonomicName>
was uncertain, but most likely was collected from Bed A. However,
<taxonomicName id="4C147881FFABC57EFB98F9F863DCF9B7" authorityName="Bi &amp; Meng &amp; Wu &amp; Ye &amp; Ni" authorityYear="2009" box="[1103,1160,1612,1636]" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="lii">
<emphasis id="B960DF10FFABC57EFB98F9F863DCF9B7" box="[1103,1160,1612,1636]" italics="true" pageId="11" pageNumber="12">P. lii</emphasis>
</taxonomicName>
is morphologically more primitive than
<taxonomicName id="4C147881FFABC57EFB84F9DD6455F94C" authorityName="Wang and Qi" authorityYear="1989" class="Mammalia" family="Ctenodactylidae" genus="Prodistylomys" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rodentia" pageId="11" pageNumber="12" phylum="Chordata" rank="species" species="xinjiangensis">
<emphasis id="B960DF10FFABC57EFB84F9DD6455F94C" italics="true" pageId="11" pageNumber="12">P. xinjiangensis</emphasis>
</taxonomicName>
in having stronger roots, or less hypsodonty, and lack of posterolophid, suggesting an earlier occurrence.
</paragraph>
</subSubSection>
</treatment>
</document>