160 lines
22 KiB
XML
160 lines
22 KiB
XML
<document id="9A0D9F31A83600A2EEC2BD99ECCC4F50" ID-DOI="10.35463/j.apr.2022.01.02" ID-ISSN="1842-371x" ID-Zenodo-Dep="10520882" IM.bibliography_approvedBy="juliana" IM.materialsCitations_approvedBy="juliana" IM.metadata_approvedBy="juliana" IM.treatments_approvedBy="juliana" checkinTime="1705451770778" checkinUser="felipe" docAuthor="Yun, Chan-gyu" docDate="2022" docId="8641F76AF4768E5489EDFAFFFEF6F7D2" docLanguage="en" docName="ActaPalaeontolRom.18.1.9-16.pdf" docOrigin="Acta Palaeontologica Romaniae 18 (1)" docSource="http://dx.doi.org/10.35463/j.apr.2022.01.02" docStyle="DocumentStyle:CA474AAD92E97C533D63E0C5C0F159F1.1:ActaPalaeontolRom.2019-.journal_article" docStyleId="CA474AAD92E97C533D63E0C5C0F159F1" docStyleName="ActaPalaeontolRom.2019-.journal_article" docStyleVersion="1" docTitle="Cosmopolitodus planus Yun 2022, comb. nov." docType="treatment" docVersion="1" lastPageNumber="12" masterDocId="7A788F12F4748E57897AFFA2FF91FFC3" masterDocTitle="A Tooth Of The Extinct Lamnid Shark, Cosmopolitodus Planus Comb. Nov. (Chondrichthyes: Elasmobranchii) From The Miocene Of Pohang City, South Korea" masterLastPageNumber="16" masterPageNumber="9" pageNumber="11" updateTime="1708696253060" updateUser="juliana" zenodo-license-document="CC-BY-4.0">
|
|
<mods:mods id="617FAB9C1B0B80AA7FAB875DC24EB93D" xmlns:mods="http://www.loc.gov/mods/v3">
|
|
<mods:titleInfo id="3B3912193F6D91EF8501DED329FB39C1">
|
|
<mods:title id="5F76805DA23A684444B26B96583F6F9E">A Tooth Of The Extinct Lamnid Shark, Cosmopolitodus Planus Comb. Nov. (Chondrichthyes: Elasmobranchii) From The Miocene Of Pohang City, South Korea</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:name id="1A29F33C37EEDB2B074E796EE23E0687" type="personal">
|
|
<mods:role id="685C4165DB4E0B277660971F31C05004">
|
|
<mods:roleTerm id="AF2FC3FF7FBD2A5B45C34BFF6451079E">Author</mods:roleTerm>
|
|
</mods:role>
|
|
<mods:namePart id="0BB89847DD4EEA391950B7096ABAF4A9">Yun, Chan-gyu</mods:namePart>
|
|
<mods:affiliation id="A1477E7F4CDEDB1BA280C779F2465B1D">Vertebrate Paleontological Institute of Incheon, Incheon 21974, Republic of Korea. Biological Sciences, Inha University, Incheon 22212, Republic of Korea</mods:affiliation>
|
|
<mods:nameIdentifier id="B9C9CBD642D5FDFD03F904129D8B145C" type="email">changyu1015@naver.com</mods:nameIdentifier>
|
|
</mods:name>
|
|
<mods:typeOfResource id="82543E16574DE3AEA30E8398569EB7EE">text</mods:typeOfResource>
|
|
<mods:relatedItem id="AC23C13912CBF841B1A6CE3910F7736A" type="host">
|
|
<mods:titleInfo id="4070603EC6BE0481E52ADCD4255D1036">
|
|
<mods:title id="8402ABD5916D82BA014F50648EA52CC3">Acta Palaeontologica Romaniae</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:part id="DD6ADAC24D1E1F2117F248FCB226DE71">
|
|
<mods:date id="4F30C90A92899F96A158F91C0B1AC84F">2022</mods:date>
|
|
<mods:detail id="3D6BC44726DE79A8DA772F50045D3244" type="pubDate">
|
|
<mods:number id="E49BC4C2260C90FF29359556883BD379">2021-07-12</mods:number>
|
|
</mods:detail>
|
|
<mods:detail id="1DB14C23F9F8F39CA0AE51405246D1FC" type="volume">
|
|
<mods:number id="C98EA3D8B7CFEC9721F10A58DB54F0EE">18</mods:number>
|
|
</mods:detail>
|
|
<mods:detail id="84819E8FCCC07142FFCE10B3CC3105CD" type="issue">
|
|
<mods:number id="10845151FBA4BFE37E9A8BB03F9F9490">1</mods:number>
|
|
</mods:detail>
|
|
<mods:extent id="3B2C72298D780265030A20E9C0A5E1BA" unit="page">
|
|
<mods:start id="E2AB2B653EACEAB0458D7A39DE56E097">9</mods:start>
|
|
<mods:end id="23423BCBE3A4899269B56EEE628C2337">16</mods:end>
|
|
</mods:extent>
|
|
</mods:part>
|
|
</mods:relatedItem>
|
|
<mods:location id="A5062D64F6F214626BAD593FB53E58F2">
|
|
<mods:url id="77E445B44427E8C6EFC24EA4BA6AF77D">http://dx.doi.org/10.35463/j.apr.2022.01.02</mods:url>
|
|
</mods:location>
|
|
<mods:classification id="EA31936BAA43E145227686AB84C361D3">journal article</mods:classification>
|
|
<mods:identifier id="4C402709811EF89401B2395C8B953F91" type="DOI">10.35463/j.apr.2022.01.02</mods:identifier>
|
|
<mods:identifier id="A1CB14E985534CC319FDA34EAE8FBE70" type="ISSN">1842-371x</mods:identifier>
|
|
<mods:identifier id="D82858A94E88CEB87CDEAB06366C2704" type="Zenodo-Dep">10520882</mods:identifier>
|
|
</mods:mods>
|
|
<treatment id="8641F76AF4768E5489EDFAFFFEF6F7D2" LSID="urn:lsid:plazi:treatment:8641F76AF4768E5489EDFAFFFEF6F7D2" httpUri="http://treatment.plazi.org/id/8641F76AF4768E5489EDFAFFFEF6F7D2" lastPageId="3" lastPageNumber="12" pageId="2" pageNumber="11">
|
|
<subSubSection id="46F215F7F4768E5589EDFAFFFD74FAB4" box="[151,741,1373,1399]" pageId="2" pageNumber="11" type="nomenclature">
|
|
<paragraph id="0E57467CF4768E5589EDFAFFFD74FAB4" blockId="2.[151,741,1373,1399]" box="[151,741,1373,1399]" pageId="2" pageNumber="11">
|
|
†
|
|
<taxonomicName id="C9E83DFFF4768E5589C8FAFDFDF2FAB5" authority="(Agassiz, 1856)" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" box="[178,611,1374,1399]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="planus" status="comb. nov.">
|
|
<emphasis id="3C9C9A6EF4768E5589C8FAFDFE22FAB4" bold="true" box="[178,435,1375,1399]" italics="true" pageId="2" pageNumber="11">Cosmopolitodus planus</emphasis>
|
|
(
|
|
<bibRefCitation id="6A793B8DF4768E5588BBFAFCFDCAFAB5" author="Agassiz, L." box="[449,603,1374,1398]" pageId="2" pageNumber="11" pagination="272 - 275" refId="ref4445" refString="Agassiz, L., 1856. Notice on the fossil fishes found in California by W. P. Blake. American Journal of Science and Arts, Series 2, 21: 272 - 275." type="journal article" year="1856">Agassiz, 1856</bibRefCitation>
|
|
)
|
|
</taxonomicName>
|
|
<emphasis id="3C9C9A6EF4768E558B10FAFDFD74FAB4" bold="true" box="[618,741,1375,1399]" pageId="2" pageNumber="11">
|
|
<taxonomicNameLabel id="27AF2715F4768E558B10FAFDFD74FAB4" box="[618,741,1375,1399]" pageId="2" pageNumber="11" rank="species">comb. nov.</taxonomicNameLabel>
|
|
</emphasis>
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection id="46F215F7F4768E5589EDFA01FC61FAED" pageId="2" pageNumber="11" type="description">
|
|
<paragraph id="0E57467CF4768E5589EDFA01FC61FAED" blockId="2.[151,772,1443,2063]" lastBlockId="2.[816,1437,1037,1326]" pageId="2" pageNumber="11">
|
|
<emphasis id="3C9C9A6EF4768E5589EDFA01FEB5FA78" bold="true" box="[151,292,1443,1467]" pageId="2" pageNumber="11">Description:</emphasis>
|
|
CNUNHM-F341 is a very well preserved fossilized lamnid shark tooth that is still embedded in the matrix (
|
|
<figureCitation id="96D35AF9F4768E558996FA47FEBDFA3E" box="[236,300,1509,1533]" captionStart="Fig" captionStartId="2.[236,271,944,965]" captionTargetBox="[182,1405,182,936]" captionTargetId="figure-986@2.[182,1405,182,936]" captionTargetPageId="2" captionText="Fig. 2 Isolated tooth of Cosmopolitodus planus with unremoved matrix (CNUNHM-F341), probably from the Duho Formation (Middle Miocene), Pohang City of South Korea." figureDoi="http://doi.org/10.5281/zenodo.10520886" httpUri="https://zenodo.org/record/10520886/files/figure.png" pageId="2" pageNumber="11">Fig. 2</figureCitation>
|
|
). The exposed labial surface of the tooth is flat and nearly complete, except for some breakage at the base of the mesial crown edge (
|
|
<figureCitation id="96D35AF9F4768E558886F985FDAFF9FC" box="[508,574,1575,1599]" captionStart="Fig" captionStartId="3.[405,440,1581,1602]" captionTargetBox="[234,1353,152,1572]" captionTargetId="figure-389@3.[234,1353,152,1572]" captionTargetPageId="3" captionText="Fig. 3 Detail of CNUNHM-F341, a Cosmopolitodus planus tooth, in labial view." figureDoi="http://doi.org/10.5281/zenodo.10520888" httpUri="https://zenodo.org/record/10520888/files/figure.png" pageId="2" pageNumber="11">Fig. 3</figureCitation>
|
|
). The tooth lacks lateral cusplets, but instead has a thick enameloid shoulder where the main cusp meets the root along the distal side (unfortunately this feature is not preserved on the mesial edge). The main cusp is wide and triangular; it measures
|
|
<quantity id="C910EB99F4768E558872F96FFECAF926" box="[264,347,1741,1765]" metricMagnitude="-2" metricUnit="m" metricValue="1.7" pageId="2" pageNumber="11" unit="mm" value="17.0">17 mm</quantity>
|
|
in height, and
|
|
<quantity id="C910EB99F4768E558B62F96FFDFAF926" box="[536,619,1741,1765]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="2" pageNumber="11" unit="mm" value="15.0">15 mm</quantity>
|
|
in preserved mesiodistal width (if completely preserved, the estimated mesiodistal width of the main cusp was likely
|
|
<quantity id="C910EB99F4768E558BDFF8ADFD62F8E4" box="[677,755,1807,1831]" metricMagnitude="-2" metricUnit="m" metricValue="1.8" pageId="2" pageNumber="11" unit="mm" value="18.0">18 mm</quantity>
|
|
). The upper two-thirds of the mesial crown edge is slightly convex, whereas the lower one-third is slightly concave. The distal edge of the crown is nearly straight apically, but strongly concave basally, thereby resulting an overall “hooked” morphology with the apex strongly inclining distally at a 28° angle measured between the midline of the tooth and the crown apex. Both cutting edges are smooth and devoid of any serrations. The preserved length of the mesial crown edge measures
|
|
<quantity id="C910EB99F4768E558C63FB8CFAFAFB85" box="[1305,1387,1070,1094]" metricMagnitude="-2" metricUnit="m" metricValue="2.1" pageId="2" pageNumber="11" unit="mm" value="21.0">21 mm</quantity>
|
|
, but was likely about
|
|
<quantity id="C910EB99F4768E558A9DFBF2FBA3FBA4" box="[999,1074,1104,1128]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" pageId="2" pageNumber="11" unit="mm" value="25.0">25 mm</quantity>
|
|
when complete. The distal crown edge length measures
|
|
<quantity id="C910EB99F4768E558D5DFBD3FBE9FB4B" box="[1063,1144,1137,1161]" metricMagnitude="-2" metricUnit="m" metricValue="1.4" pageId="2" pageNumber="11" unit="mm" value="14.0">14 mm</quantity>
|
|
. The root is large and has rounded mesial and distal root lobes. Both the mesial and the distal roots are extended slightly beyond the crown edges, and the root has a triangular interlobe area. The maximum width and height of the root are
|
|
<quantity id="C910EB99F4768E558C70FB57FAC6FACE" box="[1290,1367,1269,1293]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="2" pageNumber="11" unit="mm" value="20.0">20 mm</quantity>
|
|
and
|
|
<quantity id="C910EB99F4768E558CEAFB57FCCDFAED" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="2" pageNumber="11" unit="mm" value="5.0">5 mm</quantity>
|
|
, respectively.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection id="46F215F7F4768E548A4AFAFBFEF6F7D2" lastPageId="3" lastPageNumber="12" pageId="2" pageNumber="11" type="discussion">
|
|
<paragraph id="0E57467CF4768E548A4AFAFBFED1F966" blockId="2.[816,1437,1368,2054]" lastBlockId="3.[151,772,1644,2066]" lastPageId="3" lastPageNumber="12" pageId="2" pageNumber="11">
|
|
<emphasis id="3C9C9A6EF4768E558A4AFAFBFC33FAB2" bold="true" box="[816,930,1369,1393]" pageId="2" pageNumber="11">Remarks:</emphasis>
|
|
CNUNHM-F341 is assigned to
|
|
<taxonomicName id="C9E83DFFF4768E558C71FAFAFC35FA51" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="planus">
|
|
<emphasis id="3C9C9A6EF4768E558C71FAFAFC35FA51" italics="true" pageId="2" pageNumber="11">Cosmopolitodus planus</emphasis>
|
|
</taxonomicName>
|
|
based on the presence of smooth cutting edges on the crown, nearly flat labial surface, a triangular and wide overall morphology of the crown with an apex that is strongly inclined distally, rounded root lobes, and the absence of lateral cusplets (e.g.,
|
|
<bibRefCitation id="6A793B8DF4768E558DE1FA5DFA8FF9D5" author="Kuga, N." box="[1179,1310,1534,1559]" pageId="2" pageNumber="11" refId="ref6124" refString="Kuga, N., 1985. Revision of Neogene Mackerel Shark of" type="book" year="1985">Kuga, 1985</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558C56FA5DFCF8F9F4" author="Karasawa, H." pageId="2" pageNumber="11" pagination="1 - 57" refId="ref5599" refString="Karasawa, H., 1989. Late Cenozoic Elasmobranchs from the Hokuriku district, central Japan. The Science reports of the Kanazawa University, 34: 1 - 57." type="journal article" year="1989">Karasawa, 1989</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558A0EF9BDFB8DF9F4" author="Nazarkin, M. V." box="[884,1052,1567,1591]" pageId="2" pageNumber="11" pagination="311 - 314" refId="ref6680" refString="Nazarkin, M. V., 2013. Hooked Mako Isurus planus (Agassiz, 1856) from the Miocene of Sakhalin. Zoosystematica Rossica, 22: 311 - 314." type="journal article" year="2013">Nazarkin, 2013</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558D5DF982FB0CF9F4" author="Yun, C. - G." box="[1063,1181,1567,1591]" pageId="2" pageNumber="11" pagination="433 - 438" refId="ref7043" refString="Yun, C. - G., 2020. New example of Cosmopolitodus hastalis (Lamniformes, Lamnidae) from the Miocene of South Korea. Zoodiversity, 54: 433 - 438." type="journal article" year="2020">Yun, 2020</bibRefCitation>
|
|
). Although some
|
|
<taxonomicName id="C9E83DFFF4768E558C20F982FBE8F99B" authority="(Rafinesque, 1810)" baseAuthorityName="Rafinesque" baseAuthorityYear="1810" class="Elasmobranchii" family="Lamnidae" genus="Isurus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="oxyrinchus">
|
|
<emphasis id="3C9C9A6EF4768E558C20F982FC34F99B" italics="true" pageId="2" pageNumber="11">Isurus oxyrinchus</emphasis>
|
|
(
|
|
<bibRefCitation id="6A793B8DF4768E558ACEF9E2FBE2F99B" author="Rafinesque, C. S." box="[948,1139,1600,1624]" pageId="2" pageNumber="11" pagination="1 - 105" refId="ref6761" refString="Rafinesque, C. S., 1810. Caratteri di alcuni nuovi generi e nuovi specie di animali e piante della Sicilia, con varie asservationi sopra di medesimi. Palermo, 1 - 105." type="book chapter" year="1810">Rafinesque, 1810</bibRefCitation>
|
|
)
|
|
</taxonomicName>
|
|
teeth bear resemblances to those of
|
|
<taxonomicName id="C9E83DFFF4768E558AE9F9C0FC63F9BA" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" box="[915,1010,1633,1657]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="planus">
|
|
<emphasis id="3C9C9A6EF4768E558AE9F9C0FC63F9BA" box="[915,1010,1633,1657]" italics="true" pageId="2" pageNumber="11">C.planus</emphasis>
|
|
</taxonomicName>
|
|
in having a relatively flat and distally inclined wide crown, CNUNHM-F341 differs from these by having an apicobasally thick root with rounded lobes (e.g.,
|
|
<bibRefCitation id="6A793B8DF4768E558A0AF967FC60F91E" author="Kuga, N." box="[880,1009,1733,1757]" pageId="2" pageNumber="11" refId="ref6124" refString="Kuga, N., 1985. Revision of Neogene Mackerel Shark of" type="book" year="1985">Kuga, 1985</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558A84F967FB48F91E" author="Boessenecker, R. W." box="[1022,1241,1733,1757]" pageId="2" pageNumber="11" pagination="1 - 30" refId="ref4526" refString="Boessenecker, R. W., 2011. A New Marine Vertebrate Assemblage from the Late Neogene Purisima Formation in Central California, Part I: Fossil Sharks, Bony Fish, Birds, and Implications for the Age of the Purisma Formation West of the San Gregorio Fault. PalArch's Journal of Vertebrate Palaeontology, 8: 1 - 30." type="journal article" year="2011">Boessenecker, 2011</bibRefCitation>
|
|
; Nazkarin, 2013). CNUNHM-F341 is differentiated from the upper lateral teeth of
|
|
<taxonomicName id="C9E83DFFF4768E558AEEF8A4FB30F8DD" baseAuthorityName="Agassiz" baseAuthorityYear="1838" box="[916,1185,1798,1822]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="hastalis">
|
|
<emphasis id="3C9C9A6EF4768E558AEEF8A4FB30F8DD" box="[916,1185,1798,1822]" italics="true" pageId="2" pageNumber="11">Cosmopolitodus hastalis</emphasis>
|
|
</taxonomicName>
|
|
in being more robust and strongly inclined distally, even compared with the cases with similar profile (e.g.,
|
|
<bibRefCitation id="6A793B8DF4768E558DE3F8EBFAC9F8A2" author="Kim, S. - H. & Park, J. - Y. & Lee, Y. - N." box="[1177,1368,1865,1889]" pageId="2" pageNumber="11" pagination="121 - 131" refId="ref6054" refString="Kim, S. - H., Park, J. - Y. & Lee, Y. - N., 2018. A tooth of Cosmopolitodus hastalis (Elasmobranchii: Lamnidae) from the Duho Formation (Middle Miocene) of Pohang-si, Gyeongsangbuk-do, South Korea. Journal of the Geological Society of Korea, 54: 121 - 131 [In Korean]." type="journal article" year="2018">Kim et al., 2018</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558C1DF8EBFCFBF841" author="Yun, C. - G." pageId="2" pageNumber="11" pagination="433 - 438" refId="ref7043" refString="Yun, C. - G., 2020. New example of Cosmopolitodus hastalis (Lamniformes, Lamnidae) from the Miocene of South Korea. Zoodiversity, 54: 433 - 438." type="journal article" year="2020">Yun, 2020</bibRefCitation>
|
|
). Lastly, the root on CNUNHM-F341 is massive and bears rounded mesial and distal root lobes, and this rounded form strongly differs from narrower and square root lobes on
|
|
<taxonomicName id="C9E83DFFF4768E558AB2F86FFB41F826" baseAuthorityName="Agassiz" baseAuthorityYear="1838" box="[968,1232,1997,2021]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="2" pageNumber="11" phylum="Chordata" rank="species" species="hastalis">
|
|
<emphasis id="3C9C9A6EF4768E558AB2F86FFB41F826" box="[968,1232,1997,2021]" italics="true" pageId="2" pageNumber="11">Cosmopolitodus hastalis</emphasis>
|
|
</taxonomicName>
|
|
(e.g.,
|
|
<bibRefCitation id="6A793B8DF4768E558C6DF86CFA09F826" author="Kuga, N." box="[1303,1432,1997,2022]" pageId="2" pageNumber="11" refId="ref6124" refString="Kuga, N., 1985. Revision of Neogene Mackerel Shark of" type="book" year="1985">Kuga, 1985</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558A4AF84DFC71F7C5" author="Karasawa, H." box="[816,992,2030,2054]" pageId="2" pageNumber="11" pagination="1 - 57" refId="ref5599" refString="Karasawa, H., 1989. Late Cenozoic Elasmobranchs from the Hokuriku district, central Japan. The Science reports of the Kanazawa University, 34: 1 - 57." type="journal article" year="1989">Karasawa, 1989</bibRefCitation>
|
|
;
|
|
<bibRefCitation id="6A793B8DF4768E558A90F84CFB02F7C5" author="Nazarkin, M. V." box="[1002,1171,2030,2054]" pageId="2" pageNumber="11" pagination="311 - 314" refId="ref6680" refString="Nazarkin, M. V., 2013. Hooked Mako Isurus planus (Agassiz, 1856) from the Miocene of Sakhalin. Zoosystematica Rossica, 22: 311 - 314." type="journal article" year="2013">Nazarkin, 2013</bibRefCitation>
|
|
). Thus, the referral of CNUNHM-F341 to
|
|
<taxonomicName id="C9E83DFFF4778E548808F9CEFDFFF947" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" box="[370,622,1644,1668]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="3" pageNumber="12" phylum="Chordata" rank="species" species="planus">
|
|
<emphasis id="3C9C9A6EF4778E548808F9CEFDFFF947" box="[370,622,1644,1668]" italics="true" pageId="3" pageNumber="12">Cosmopolitodus planus</emphasis>
|
|
</taxonomicName>
|
|
can be confidently justified.
|
|
</paragraph>
|
|
<caption id="5A9716F4F4778E5488EFF98FFB0EF980" ID-DOI="http://doi.org/10.5281/zenodo.10520888" ID-Zenodo-Dep="10520888" box="[405,1183,1581,1603]" httpUri="https://zenodo.org/record/10520888/files/figure.png" pageId="3" pageNumber="12" startId="3.[405,440,1581,1602]" targetBox="[234,1353,152,1572]" targetPageId="3" targetType="figure">
|
|
<paragraph id="0E57467CF4778E5488EFF98FFB0EF980" blockId="3.[405,1183,1581,1603]" box="[405,1183,1581,1603]" pageId="3" pageNumber="12">
|
|
<emphasis id="3C9C9A6EF4778E5488EFF98FFE5EF981" bold="true" box="[405,463,1581,1602]" pageId="3" pageNumber="12">Fig. 3</emphasis>
|
|
Detail of CNUNHM-F341, a
|
|
<taxonomicName id="C9E83DFFF4778E548B8AF98FFC43F980" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" box="[752,978,1581,1603]" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="3" pageNumber="12" phylum="Chordata" rank="species" species="planus">
|
|
<emphasis id="3C9C9A6EF4778E548B8AF98FFC43F980" box="[752,978,1581,1603]" italics="true" pageId="3" pageNumber="12">Cosmopolitodus planus</emphasis>
|
|
</taxonomicName>
|
|
tooth, in labial view.
|
|
</paragraph>
|
|
</caption>
|
|
<paragraph id="0E57467CF4778E5489EDF90DFEF6F7D2" blockId="3.[151,772,1644,2066]" pageId="3" pageNumber="12">
|
|
The hooked nature of the main cusp of specimen CNUNHM-F341 suggests it was from the left palatoquadrate of the shark. Furthermore, the height and mesiodistal width of the main cusp, the degree of distal inclination, and the overall size of suggests it is either from an upper intermediate or posterior tooth file, as described upper anterior and larger upper lateral teeth of
|
|
<taxonomicName id="C9E83DFFF4778E548B91F8D4FF4FF86D" authorityName="Yun" authorityYear="2022" baseAuthorityName="Agassiz" baseAuthorityYear="1856" class="Elasmobranchii" family="Lamnidae" genus="Cosmopolitodus" kingdom="Animalia" order="Lamniformes" pageId="3" pageNumber="12" phylum="Chordata" rank="species" species="planus">
|
|
<emphasis id="3C9C9A6EF4778E548B91F8D4FF4FF86D" italics="true" pageId="3" pageNumber="12">C. planus</emphasis>
|
|
</taxonomicName>
|
|
generally have a mesiodistally wider and taller main cusp (e.g.,
|
|
<bibRefCitation id="6A793B8DF4778E548826F815FD98F80C" author="Nazarkin, M. V." box="[348,521,1975,1999]" pageId="3" pageNumber="12" pagination="311 - 314" refId="ref6680" refString="Nazarkin, M. V., 2013. Hooked Mako Isurus planus (Agassiz, 1856) from the Miocene of Sakhalin. Zoosystematica Rossica, 22: 311 - 314." type="journal article" year="2013">Nazarkin, 2013</bibRefCitation>
|
|
). The possibility also exists that the specimen may have been derived from a juvenile individual.
|
|
</paragraph>
|
|
</subSubSection>
|
|
</treatment>
|
|
</document> |