286 lines
36 KiB
XML
286 lines
36 KiB
XML
<document id="C89A01E10C2CF9344764BF9CEA85DE8E" ID-CLB-Dataset="24105" ID-DOI="10.5852/ejt.2019.585" ID-GBIF-Dataset="dca608e8-fccf-4c1c-b8df-ef0c28e1d518" ID-Zenodo-Dep="3660259" ID-ZooBank="181B6FBA-ED75-4BB4-84C4-FB512B794749" IM.bibliography_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1581251975682" checkinUser="plazi" docAuthor="Ebersole, Jun A., Cicimurri, David J. & Stringer, Gary L." docDate="2019" docId="18174D41FF0CFF24FDFE99704C860AF6" docLanguage="en" docName="ejt-585_ebersole_cicimurri_stinger.pdf.imf" docOrigin="European Journal of Taxonomy 585" docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1" docStyleId="EF2B578F1D15862ADE45B0C07C620911" docStyleName="EJT.2018-.journal_article.type1" docStyleVersion="14" docTitle="Meridiania cf. m.convexa Case 1994" docType="treatment" docVersion="18" lastPageNumber="140" masterDocId="E42E3539FF85FFAFFFC69F344D4B0F37" masterDocTitle="Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths" masterLastPageNumber="274" masterPageNumber="1" pageNumber="138" updateTime="1698783570407" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="2214E62DF1D90AFE0B9DD74B1E76652E">Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths</mods:title>
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<mods:namePart id="06C7CE1842B2C9167683D753FB13C356">Ebersole, Jun A.</mods:namePart>
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<mods:namePart id="EF0C31874035B4566303EA9A62A2D754">Cicimurri, David J.</mods:namePart>
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<mods:namePart id="6546926E260EEC90E7AA22651B256171">Stringer, Gary L.</mods:namePart>
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<mods:title id="77218A6B593F5ADE023A5B2554C4B6F8">European Journal of Taxonomy</mods:title>
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<mods:part id="9795D2E367D04D8B7CD64772C8D40F1E">
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<mods:date id="9D25E36A05B6E821AB52CAD1551A5A75">2019</mods:date>
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<mods:identifier id="BEDD25A48D73EE1379A819815EB77BB4" type="Zenodo-Dep">3660259</mods:identifier>
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<treatment id="18174D41FF0CFF24FDFE99704C860AF6" ID-DOI="http://doi.org/10.5281/zenodo.3664262" ID-GBIF-Taxon="162073134" ID-Zenodo-Dep="3664262" LSID="urn:lsid:plazi:treatment:18174D41FF0CFF24FDFE99704C860AF6" httpUri="http://treatment.plazi.org/id/18174D41FF0CFF24FDFE99704C860AF6" lastPageId="139" lastPageNumber="140" pageId="137" pageNumber="138">
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<subSubSection id="D8A4AFDCFF0CFF26FDFE99704EB00969" box="[568,1019,1604,1631]" pageId="137" pageNumber="138" type="nomenclature">
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<paragraph id="9001FC57FF0CFF26FDFE99704EB00969" blockId="137.[568,1019,1604,1666]" box="[568,1019,1604,1631]" pageId="137" pageNumber="138">
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<heading id="CB494B3BFF0CFF26FDFE99704EB00969" box="[568,1019,1604,1631]" centered="true" fontSize="11" level="2" pageId="137" pageNumber="138" reason="2">
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<taxonomicName id="57BE87D4FF0CFF26FDFE99704EB00969" authority="Case 1994" authorityName="Case" authorityYear="1994" box="[568,1019,1604,1631]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="137" pageNumber="138" phylum="Chordata" rank="species" species="cf. m.convexa">
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<emphasis id="A2CA2045FF0CFF26FDFE99704FF40968" bold="true" box="[568,703,1604,1631]" italics="true" pageId="137" pageNumber="138">Meridiania</emphasis>
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cf.
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<emphasis id="A2CA2045FF0CFF26FD2A99714E330968" bold="true" box="[748,888,1605,1631]" italics="true" pageId="137" pageNumber="138">M. convexa</emphasis>
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Case 1994
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</taxonomicName>
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||
</heading>
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||
</paragraph>
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</subSubSection>
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<subSubSection id="D8A4AFDCFF0CFF26FD3699534E0809B5" box="[752,835,1639,1666]" pageId="137" pageNumber="138" type="description">
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<paragraph id="9001FC57FF0CFF26FD3699534E0809B5" blockId="137.[568,1019,1604,1666]" box="[752,835,1639,1666]" pageId="137" pageNumber="138">
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<figureCitation id="0885E0D2FF0CFF26FD3699534E0809B5" box="[752,835,1639,1666]" captionStart="Fig" captionStartId="138.[189,232,1825,1851]" captionTargetBox="[204,1385,787,1765]" captionTargetId="figure@138.[189,1398,774,1782]" captionTargetPageId="138" captionText="Fig. 51. Meridiania cf. M. convexa Case 1994, teeth. A–D. MSC 38877, median tooth, lower Tallahatta Formation. A. Oral view. B. Labial view. C. Profile view. D. Basal view. E–H. MSC 38822.2, lateral tooth, Gosport Sand. E. Oral view. F. Labial view. G. Lingual view. H. Basal view. I–L. MSC 38822.1, lateral tooth, Gosport Sand. I. Oral view. J. Labial view. K. Lingual view. L. Basal view. M–O. MSC 38820, lateral tooth, basal Gosport Sand. M. Oral view. N. Lingual view. O. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="137" pageNumber="138">Fig. 51</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="D8A4AFDCFF0CFF26FF7B999D492E09F4" box="[189,1125,1705,1731]" pageId="137" pageNumber="138" type="reference_group">
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<paragraph id="9001FC57FF0CFF26FF7B999D492E09F4" blockId="137.[189,1125,1705,1731]" box="[189,1125,1705,1731]" pageId="137" pageNumber="138">
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<treatmentCitationGroup id="B0AEDB79FF0CFF26FF7B999D492E09F4" box="[189,1125,1705,1731]" pageId="137" pageNumber="138">
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<taxonomicName id="57BE87D4FF0CFF26FF7B999D4F3509F4" authority="Case, 1994 a: 124" authorityName="Case" authorityPageNumber="124" authorityYear="1994" box="[189,638,1705,1731]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="137" pageNumber="138" phylum="Chordata" rank="species" species="convexa">
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<emphasis id="A2CA2045FF0CFF26FF7B999D4CE309F4" box="[189,424,1705,1731]" italics="true" pageId="137" pageNumber="138">Meridiania convexa</emphasis>
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<treatmentCitation id="111FDA46FF0CFF26FE76999D4F3509F4" author="Case G. R." box="[432,638,1705,1731]" page="124" pageId="137" pageNumber="138" year="1994">
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<bibRefCitation id="F42F81A6FF0CFF26FE76999D4F3509F4" author="Case G. R." box="[432,638,1705,1731]" pageId="137" pageNumber="138" pagination="97 - 138" refId="ref138502" refString="Case G. R. 1994 a. Fossil fish remains from the late Paleocene Tuscahoma and early Eocene Bashi formations of Meridian, Lauderdale County, Mississippi. Part I - Selachians. Palaeontographica Abteilung A 230 (4 - 6): 97 - 138." type="journal article" year="1994">Case, 1994a: 124</bibRefCitation>
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</treatmentCitation>
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</taxonomicName>
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, pl. 13 figs 282–291, pl. 14 figs 292–306.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="D8A4AFDCFF0CFF26FF7B99DF4F1D0860" pageId="137" pageNumber="138" type="materials_examined">
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<paragraph id="9001FC57FF0CFF26FF7B99DF4CE10832" blockId="137.[189,426,1771,1797]" box="[189,426,1771,1797]" pageId="137" pageNumber="138">
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<heading id="CB494B3BFF0CFF26FF7B99DF4CE10832" bold="true" box="[189,426,1771,1797]" fontSize="11" level="3" pageId="137" pageNumber="138" reason="3">
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<emphasis id="A2CA2045FF0CFF26FF7B99DF4CE10832" bold="true" box="[189,426,1771,1797]" pageId="137" pageNumber="138">Material examined</emphasis>
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</heading>
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</paragraph>
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<paragraph id="9001FC57FF0CFF26FF7B982E4F1D0860" blockId="137.[189,1398,1817,1880]" pageId="137" pageNumber="138">
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<materialsCitation id="20D6F60AFF0CFF26FF7B982E4F190860" ID-GBIF-Occurrence="2564277993" collectionCode="MSC" country="United States of America" location="Claiborne Group" pageId="137" pageNumber="138" specimenCount="2" stateProvince="Alabama">
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<collectingCountry id="E8A9BCC7FF0CFF26FF7B982E4F180803" box="[189,595,1818,1844]" name="United States of America" pageId="137" pageNumber="138">UNITED STATES OF AMERICA</collectingCountry>
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–
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<emphasis id="A2CA2045FF0CFF26FDB7982D4FA80804" bold="true" box="[625,739,1817,1843]" pageId="137" pageNumber="138">
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<collectingRegion id="527A32B5FF0CFF26FDB7982D4FA80804" box="[625,739,1817,1843]" country="United States of America" name="Alabama" pageId="137" pageNumber="138">Alabama</collectingRegion>
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</emphasis>
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• 4 isolated teeth;
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<location id="9561AA8CFF0CFF26FC04982D49C60803" LSID="urn:lsid:plazi:treatment:18174D41FF0CFF24FDFE99704C860AF6:9561AA8CFF0CFF26FC04982D49C60803" box="[962,1165,1817,1844]" country="United States of America" name="Claiborne Group" pageId="137" pageNumber="138" stateProvince="Alabama">Claiborne Group</location>
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;
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<collectionCode id="F6AF6492FF0CFF26FB5F982E499C0803" box="[1177,1239,1818,1844]" pageId="137" pageNumber="138">MSC</collectionCode>
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38820,
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<collectionCode id="F6AF6492FF0CFF26FAFE982E483D0803" box="[1336,1398,1818,1844]" pageId="137" pageNumber="138">MSC</collectionCode>
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38822 (
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<specimenCount id="86B837DEFF0CFF26FED198094CE7086F" box="[279,428,1853,1880]" pageId="137" pageNumber="138" type="generic">2 specimens</specimenCount>
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),
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<collectionCode id="F6AF6492FF0CFF26FE0698094CB50860" box="[448,510,1853,1879]" pageId="137" pageNumber="138">MSC</collectionCode>
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38877
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="D8A4AFDCFF0CFF25FF7B984A4CFE0DB6" lastPageId="138" lastPageNumber="139" pageId="137" pageNumber="138" type="description">
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<paragraph id="9001FC57FF0CFF26FF7B984A4C0508AF" blockId="137.[189,334,1918,1944]" box="[189,334,1918,1944]" pageId="137" pageNumber="138">
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<heading id="CB494B3BFF0CFF26FF7B984A4C0508AF" bold="true" box="[189,334,1918,1944]" fontSize="11" level="3" pageId="137" pageNumber="138" reason="3">
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<emphasis id="A2CA2045FF0CFF26FF7B984A4C0508AF" bold="true" box="[189,334,1918,1944]" pageId="137" pageNumber="138">Description</emphasis>
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</heading>
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</paragraph>
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<paragraph id="9001FC57FF0CFF25FF7B989A4F990E5B" blockId="137.[189,1399,1965,2027]" lastBlockId="138.[189,1398,267,364]" lastPageId="138" lastPageNumber="139" pageId="137" pageNumber="138">Two morphologies represented in our sample. One represented by a partial tooth that is wider than long; the preserved lateral margin is angular. Crown appears to have had a straight occlusal outline; the highly worn occlusal surface largely consists of dentine with thin outer enameloid layer. Labial crown foot rounded; lingual crown foot has shallow transverse furrow. Root polyaulocorhize; relatively few lamellae separated by wide nutritive grooves.</paragraph>
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<paragraph id="9001FC57FF0FFF25FF7B9EA74CFE0DB6" blockId="138.[189,1399,403,641]" pageId="138" pageNumber="139">
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Second morphology includes teeth with a hexagonal crown. One such tooth worn flat through
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<emphasis id="A2CA2045FF0FFF25FAE09EA0483C0E9A" box="[1318,1399,404,429]" italics="true" pageId="138" pageNumber="139">in vivo</emphasis>
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wear. Occlusal surface formed of dentine surrounded by a layer of enameloid. All have thin and rounded labial margin; transverse furrows are located at the lingual crown foot. All lateral teeth with one-to-two nutritive grooves. Basal attachment surfaces of lobes triangular. The two other teeth with transverse cusp at center of the crown; duller on one specimen due to ablation. Enameloid of ablated specimen is polished and lacks detail. Remaining tooth exhibits discontinuous vertical ridges on the labial and lingual sides of cusp.
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</paragraph>
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</subSubSection>
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<caption id="C4C1ACDFFF0FFF25FF7B98154FD608DB" ID-DOI="http://doi.org/10.5281/zenodo.3660359" ID-Zenodo-Dep="3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="138" pageNumber="139" startId="138.[189,232,1825,1851]" targetBox="[204,1385,787,1765]" targetPageId="138">
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<paragraph id="9001FC57FF0FFF25FF7B98154FD608DB" blockId="138.[189,1399,1825,2028]" pageId="138" pageNumber="139">
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||
<emphasis id="A2CA2045FF0FFF25FF7B98154C52080C" bold="true" box="[189,281,1825,1851]" pageId="138" pageNumber="139">Fig. 51.</emphasis>
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<taxonomicName id="57BE87D4FF0FFF25FEE698154CEF080C" authorityName="Case" authorityYear="1994" box="[288,420,1825,1851]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="138" pageNumber="139" phylum="Chordata" rank="genus">
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||
<emphasis id="A2CA2045FF0FFF25FEE698154CEF080C" box="[288,420,1825,1851]" italics="true" pageId="138" pageNumber="139">Meridiania</emphasis>
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||
</taxonomicName>
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||
cf.
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<taxonomicName id="57BE87D4FF0FFF25FE1698164F90080B" authority="Case 1994" authorityName="Case" authorityYear="1994" box="[464,731,1826,1852]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="138" pageNumber="139" phylum="Chordata" rank="species" species="convexa">
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||
<emphasis id="A2CA2045FF0FFF25FE1698164F1C080C" box="[464,599,1826,1851]" italics="true" pageId="138" pageNumber="139">M. convexa</emphasis>
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||
Case 1994
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</taxonomicName>
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||
, teeth.
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<emphasis id="A2CA2045FF0FFF25FCE898154E2C080C" bold="true" box="[814,871,1825,1851]" pageId="138" pageNumber="139">A–D</emphasis>
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.
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<collectionCode id="F6AF6492FF0FFF25FCB398164EF8080B" box="[885,947,1826,1852]" pageId="138" pageNumber="139">MSC</collectionCode>
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||
38877, median tooth, lower Tallahatta Formation.
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<emphasis id="A2CA2045FF0FFF25FE8E98704C160869" bold="true" box="[328,349,1860,1886]" pageId="138" pageNumber="139">A</emphasis>
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. Oral view.
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<emphasis id="A2CA2045FF0FFF25FE3498714F4D0868" bold="true" box="[498,518,1861,1887]" pageId="138" pageNumber="139">B</emphasis>
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||
. Labial view.
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<emphasis id="A2CA2045FF0FFF25FD7798704F8D0869" bold="true" box="[689,710,1860,1886]" pageId="138" pageNumber="139">C</emphasis>
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. Profile view.
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<emphasis id="A2CA2045FF0FFF25FCB098714EC00868" bold="true" box="[886,907,1861,1887]" pageId="138" pageNumber="139">D</emphasis>
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. Basal view.
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<emphasis id="A2CA2045FF0FFF25FBEB9871492D0868" bold="true" box="[1069,1126,1861,1887]" pageId="138" pageNumber="139">E–H</emphasis>
|
||
.
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||
<collectionCode id="F6AF6492FF0FFF25FBB0987149FF0868" box="[1142,1204,1861,1887]" pageId="138" pageNumber="139">MSC</collectionCode>
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||
38822.2, lateral tooth, Gosport Sand.
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<emphasis id="A2CA2045FF0FFF25FE70985C4C8108B5" bold="true" box="[438,458,1896,1922]" pageId="138" pageNumber="139">E</emphasis>
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||
. Oral view.
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<emphasis id="A2CA2045FF0FFF25FD9E985C4F2108B5" bold="true" box="[600,618,1896,1922]" pageId="138" pageNumber="139">F</emphasis>
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. Labial view.
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<emphasis id="A2CA2045FF0FFF25FCD6985C4E6C08B5" bold="true" box="[784,807,1896,1922]" pageId="138" pageNumber="139">G</emphasis>
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. Lingual view.
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<emphasis id="A2CA2045FF0FFF25FC1A985C4EB808B5" bold="true" box="[988,1011,1896,1922]" pageId="138" pageNumber="139">H</emphasis>
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. Basal view.
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<emphasis id="A2CA2045FF0FFF25FB49985C49F608B5" bold="true" box="[1167,1213,1896,1922]" pageId="138" pageNumber="139">I–L</emphasis>
|
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.
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<collectionCode id="F6AF6492FF0FFF25FB0D985C484208B5" box="[1227,1289,1896,1922]" pageId="138" pageNumber="139">MSC</collectionCode>
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||
38822.1, lateral tooth, Gosport Sand.
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<emphasis id="A2CA2045FF0FFF25FDCA98BF4F5C0892" bold="true" box="[524,535,1931,1957]" pageId="138" pageNumber="139">I</emphasis>
|
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. Oral view.
|
||
<emphasis id="A2CA2045FF0FFF25FD6C98BF4FF20892" bold="true" box="[682,697,1931,1957]" pageId="138" pageNumber="139">J</emphasis>
|
||
. Labial view.
|
||
<emphasis id="A2CA2045FF0FFF25FCA598BF4E310892" bold="true" box="[867,890,1931,1957]" pageId="138" pageNumber="139">K</emphasis>
|
||
. Lingual view.
|
||
<emphasis id="A2CA2045FF0FFF25FBF298BF49030892" bold="true" box="[1076,1096,1931,1957]" pageId="138" pageNumber="139">L</emphasis>
|
||
. Basal view.
|
||
<emphasis id="A2CA2045FF0FFF25FB2E98BF48620892" bold="true" box="[1256,1321,1931,1957]" pageId="138" pageNumber="139">M–O</emphasis>
|
||
.
|
||
<collectionCode id="F6AF6492FF0FFF25FAFE98BF483D0892" box="[1336,1398,1931,1957]" pageId="138" pageNumber="139">MSC</collectionCode>
|
||
38820, lateral tooth, basal Gosport Sand.
|
||
<emphasis id="A2CA2045FF0FFF25FD66989A4FF708FF" bold="true" box="[672,700,1966,1992]" pageId="138" pageNumber="139">M</emphasis>
|
||
. Oral view.
|
||
<emphasis id="A2CA2045FF0FFF25FC8F989A4E1508FF" bold="true" box="[841,862,1966,1992]" pageId="138" pageNumber="139">N</emphasis>
|
||
. Lingual view.
|
||
<emphasis id="A2CA2045FF0FFF25FBD2989A496008FF" bold="true" box="[1044,1067,1966,1992]" pageId="138" pageNumber="139">O</emphasis>
|
||
. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="D8A4AFDCFF0EFF24FF7B9E3F4C860AF6" pageId="139" pageNumber="140" type="discussion">
|
||
<paragraph id="9001FC57FF0EFF24FF7B9E3F4C640E12" blockId="139.[189,303,267,293]" box="[189,303,267,293]" pageId="139" pageNumber="140">
|
||
<heading id="CB494B3BFF0EFF24FF7B9E3F4C640E12" bold="true" box="[189,303,267,293]" fontSize="11" level="3" pageId="139" pageNumber="140" reason="3">
|
||
<emphasis id="A2CA2045FF0EFF24FF7B9E3F4C640E12" bold="true" box="[189,303,267,293]" pageId="139" pageNumber="140">Remarks</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="9001FC57FF0EFF24FF7B9E0E4C640D47" blockId="139.[189,1399,314,624]" pageId="139" pageNumber="140">
|
||
The discovery of
|
||
<taxonomicName id="57BE87D4FF0EFF24FE4D9E0E4F440E63" authorityName="Case" authorityYear="1994" box="[395,527,314,340]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="genus">
|
||
<emphasis id="A2CA2045FF0EFF24FE4D9E0E4F440E63" box="[395,527,314,340]" italics="true" pageId="139" pageNumber="140">Meridiania</emphasis>
|
||
</taxonomicName>
|
||
in the Tallahatta Formation and Gosport Sand was surprising, considering both occurrences would represent significant range extensions from Zone NP11 strata of the Ypresian Nanjemoy Formation of
|
||
<collectingRegion id="527A32B5FF0EFF24FE289EB54F060EAC" box="[494,589,385,411]" country="United States of America" name="Virginia" pageId="139" pageNumber="140">Virginia</collectingRegion>
|
||
(
|
||
<bibRefCitation id="F42F81A6FF0EFF24FDA49EB54FB30EAB" author="Kent B. W." box="[610,760,385,412]" pageId="139" pageNumber="140" pagination="39 - 51" refId="ref144268" refString="Kent B. W. 1999 b. Part 3. Rays from the Fisher / Sullivan Site. In: Weems R. E. (ed.) Fossil Vertebrates and Plants from the Fisher / Sullivan Site (Stafford County), a Record of Early Eocene Life in Virginia. Virginia Division of Mineral Resources 152: 39 - 51." type="journal article" year="1999">
|
||
<collectingRegion id="527A32B5FF0EFF24FDA49EB54FD60EAC" box="[610,669,385,411]" country="United Kingdom" name="Kent" pageId="139" pageNumber="140">Kent</collectingRegion>
|
||
1999b
|
||
</bibRefCitation>
|
||
). In fact, when MSC 38822.1 (
|
||
<figureCitation id="0885E0D2FF0EFF24FBB99EB549B10EAB" box="[1151,1274,385,412]" captionStart="Fig" captionStartId="138.[189,232,1825,1851]" captionTargetBox="[204,1385,787,1765]" captionTargetId="figure@138.[189,1398,774,1782]" captionTargetPageId="138" captionText="Fig. 51. Meridiania cf. M. convexa Case 1994, teeth. A–D. MSC 38877, median tooth, lower Tallahatta Formation. A. Oral view. B. Labial view. C. Profile view. D. Basal view. E–H. MSC 38822.2, lateral tooth, Gosport Sand. E. Oral view. F. Labial view. G. Lingual view. H. Basal view. I–L. MSC 38822.1, lateral tooth, Gosport Sand. I. Oral view. J. Labial view. K. Lingual view. L. Basal view. M–O. MSC 38820, lateral tooth, basal Gosport Sand. M. Oral view. N. Lingual view. O. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="139" pageNumber="140">Fig. 51–L</figureCitation>
|
||
) was first encountered within the ACl-15 Gosport Sand sample (Zone NP17), our immediate suspicion was that the specimen represented a contaminant. However, the discovery of an additional tooth from the same locality (MSC 38822.2,
|
||
<figureCitation id="0885E0D2FF0EFF24FE249EDF4F7C0D31" box="[482,567,491,518]" captionStart="Fig" captionStartId="138.[189,232,1825,1851]" captionTargetBox="[204,1385,787,1765]" captionTargetId="figure@138.[189,1398,774,1782]" captionTargetPageId="138" captionText="Fig. 51. Meridiania cf. M. convexa Case 1994, teeth. A–D. MSC 38877, median tooth, lower Tallahatta Formation. A. Oral view. B. Labial view. C. Profile view. D. Basal view. E–H. MSC 38822.2, lateral tooth, Gosport Sand. E. Oral view. F. Labial view. G. Lingual view. H. Basal view. I–L. MSC 38822.1, lateral tooth, Gosport Sand. I. Oral view. J. Labial view. K. Lingual view. L. Basal view. M–O. MSC 38820, lateral tooth, basal Gosport Sand. M. Oral view. N. Lingual view. O. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="139" pageNumber="140">Fig. 51</figureCitation>
|
||
E–H), as well as a tooth from the Gosport Sand at site ACl-4 (MSC 38820,
|
||
<figureCitation id="0885E0D2FF0EFF24FEDE9D3B4C250D1D" box="[280,366,527,554]" captionStart="Fig" captionStartId="138.[189,232,1825,1851]" captionTargetBox="[204,1385,787,1765]" captionTargetId="figure@138.[189,1398,774,1782]" captionTargetPageId="138" captionText="Fig. 51. Meridiania cf. M. convexa Case 1994, teeth. A–D. MSC 38877, median tooth, lower Tallahatta Formation. A. Oral view. B. Labial view. C. Profile view. D. Basal view. E–H. MSC 38822.2, lateral tooth, Gosport Sand. E. Oral view. F. Labial view. G. Lingual view. H. Basal view. I–L. MSC 38822.1, lateral tooth, Gosport Sand. I. Oral view. J. Labial view. K. Lingual view. L. Basal view. M–O. MSC 38820, lateral tooth, basal Gosport Sand. M. Oral view. N. Lingual view. O. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="139" pageNumber="140">Fig. 51</figureCitation>
|
||
M–O), spurred us to reconsider this possibility. Closer inspection of these specimens revealed similar preservation to the other myliobatiform teeth within the Gosport samples from both localities.
|
||
</paragraph>
|
||
<paragraph id="9001FC57FF0EFF24FF7B9DAC4C880CF9" blockId="139.[189,1399,664,974]" pageId="139" pageNumber="140">
|
||
Unfortunately, only one of the four teeth we examined is preserved well enough for meaningful comparison to
|
||
<taxonomicName id="57BE87D4FF0EFF24FEA89D884CBD0DE2" authorityName="Case" authorityYear="1994" box="[366,502,700,725]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="species" species="convexa">
|
||
<emphasis id="A2CA2045FF0EFF24FEA89D884CBD0DE2" box="[366,502,700,725]" italics="true" pageId="139" pageNumber="140">M. convexa</emphasis>
|
||
</taxonomicName>
|
||
, the only species currently within the genus (i.e.,
|
||
<bibRefCitation id="F42F81A6FF0EFF24FB8F9D88499D0DE1" author="Case G. R." box="[1097,1238,700,726]" pageId="139" pageNumber="140" pagination="97 - 138" refId="ref138502" refString="Case G. R. 1994 a. Fossil fish remains from the late Paleocene Tuscahoma and early Eocene Bashi formations of Meridian, Lauderdale County, Mississippi. Part I - Selachians. Palaeontographica Abteilung A 230 (4 - 6): 97 - 138." type="journal article" year="1994">Case 1994a</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="F42F81A6FF0EFF24FB259D88483A0DE2" author="Kent B. W." box="[1251,1393,699,726]" pageId="139" pageNumber="140" pagination="39 - 51" refId="ref144268" refString="Kent B. W. 1999 b. Part 3. Rays from the Fisher / Sullivan Site. In: Weems R. E. (ed.) Fossil Vertebrates and Plants from the Fisher / Sullivan Site (Stafford County), a Record of Early Eocene Life in Virginia. Virginia Division of Mineral Resources 152: 39 - 51." type="journal article" year="1999">
|
||
<collectingRegion id="527A32B5FF0EFF24FB259D8848570DE1" box="[1251,1308,700,726]" country="United Kingdom" name="Kent" pageId="139" pageNumber="140">Kent</collectingRegion>
|
||
1999b
|
||
</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="F42F81A6FF0EFF24FF7B9DEB4C300DCE" author="Cicimurri D. J." box="[189,379,735,761]" pageId="139" pageNumber="140" pagination="99 - 107" refId="ref139505" refString="Cicimurri D. J. 2010. On the dentition of Meridiania convexa Case (Myliobatoidea), an extinct early Eocene ray from the United States. Cainozoic Research 7 (1 - 2): 99 - 107." type="journal article" year="2010">Cicimurri 2010</bibRefCitation>
|
||
). The three Gosport Sand
|
||
<taxonomicName id="57BE87D4FF0EFF24FD059DEB4E0C0DCE" authorityName="Case" authorityYear="1994" box="[707,839,735,761]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="genus">
|
||
<emphasis id="A2CA2045FF0EFF24FD059DEB4E0C0DCE" box="[707,839,735,761]" italics="true" pageId="139" pageNumber="140">Meridiania</emphasis>
|
||
</taxonomicName>
|
||
specimens we examined are morphologically similar to
|
||
<typeStatus id="4F0542F5FF0EFF24FEFA9C374C240C2A" box="[316,367,771,797]" pageId="139" pageNumber="140">type</typeStatus>
|
||
specimens of
|
||
<taxonomicName id="57BE87D4FF0EFF24FDE29C304FE40C2A" authorityName="Case" authorityYear="1994" box="[548,687,772,797]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="species" species="convexa">
|
||
<emphasis id="A2CA2045FF0EFF24FDE29C304FE40C2A" box="[548,687,772,797]" italics="true" pageId="139" pageNumber="140">M. convexa</emphasis>
|
||
</taxonomicName>
|
||
, which
|
||
<bibRefCitation id="F42F81A6FF0EFF24FCD39C374EFF0C2A" author="Case G. R." box="[789,948,771,797]" pageId="139" pageNumber="140" pagination="97 - 138" refId="ref138502" refString="Case G. R. 1994 a. Fossil fish remains from the late Paleocene Tuscahoma and early Eocene Bashi formations of Meridian, Lauderdale County, Mississippi. Part I - Selachians. Palaeontographica Abteilung A 230 (4 - 6): 97 - 138." type="journal article" year="1994">Case (1994a)</bibRefCitation>
|
||
interpreted as having been part of a dentition similar to that of
|
||
<taxonomicName id="57BE87D4FF0EFF24FE349C134F120C77" authorityName="Rafinesque" authorityYear="1810" box="[498,601,807,832]" class="Elasmobranchii" family="Dasyatidae" genus="Dasyatis" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="genus">
|
||
<emphasis id="A2CA2045FF0EFF24FE349C134F120C77" box="[498,601,807,832]" italics="true" pageId="139" pageNumber="140">Dasyatis</emphasis>
|
||
</taxonomicName>
|
||
. However,
|
||
<bibRefCitation id="F42F81A6FF0EFF24FD189C124EEE0C77" author="Cicimurri D. J." box="[734,933,806,832]" pageId="139" pageNumber="140" pagination="99 - 107" refId="ref139505" refString="Cicimurri D. J. 2010. On the dentition of Meridiania convexa Case (Myliobatoidea), an extinct early Eocene ray from the United States. Cainozoic Research 7 (1 - 2): 99 - 107." type="journal article" year="2010">Cicimurri (2010)</bibRefCitation>
|
||
reevaluated the dentition of
|
||
<taxonomicName id="57BE87D4FF0EFF24FB369C13483D0C77" authorityName="Case" authorityYear="1994" box="[1264,1398,807,832]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="species" species="convexa">
|
||
<emphasis id="A2CA2045FF0EFF24FB369C13483D0C77" box="[1264,1398,807,832]" italics="true" pageId="139" pageNumber="140">M. convexa</emphasis>
|
||
</taxonomicName>
|
||
and concluded that the
|
||
<typeStatus id="4F0542F5FF0EFF24FE179C7E4F4F0C53" box="[465,516,842,868]" pageId="139" pageNumber="140">type</typeStatus>
|
||
material represented lateral teeth in a dental battery that was more similar to that of
|
||
<taxonomicName id="57BE87D4FF0EFF24FEF09C594CF10CB0" box="[310,442,877,903]" class="Elasmobranchii" family="Myliobatidae" genus="Rhinoptera" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="genus">
|
||
<emphasis id="A2CA2045FF0EFF24FEF09C594CF10CB0" box="[310,442,877,903]" italics="true" pageId="139" pageNumber="140">Rhinoptera</emphasis>
|
||
</taxonomicName>
|
||
. The broken tooth recovered from the Tallahatta Formation is likely equivalent to the
|
||
<taxonomicName id="57BE87D4FF0EFF24FECE9CA54CC70C9C" authorityName="Case" authorityYear="1994" box="[264,396,913,939]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="genus">
|
||
<emphasis id="A2CA2045FF0EFF24FECE9CA54CC70C9C" box="[264,396,913,939]" italics="true" pageId="139" pageNumber="140">Meridiania</emphasis>
|
||
</taxonomicName>
|
||
tooth shown by
|
||
<bibRefCitation id="F42F81A6FF0EFF24FD959CA54E1B0C9C" author="Cicimurri D. J." box="[595,848,913,939]" pageId="139" pageNumber="140" pagination="99 - 107" refId="ref139505" refString="Cicimurri D. J. 2010. On the dentition of Meridiania convexa Case (Myliobatoidea), an extinct early Eocene ray from the United States. Cainozoic Research 7 (1 - 2): 99 - 107." type="journal article" year="2010">Cicimurri (2010: 103</bibRefCitation>
|
||
, fig. 3.1), which was considered to represent a proximal lateral tooth.
|
||
</paragraph>
|
||
<paragraph id="9001FC57FF0EFF24FF7B9CC249460A3E" blockId="139.[189,1399,1014,1290]" pageId="139" pageNumber="140">
|
||
The best specimen, MSC 38822.1 (
|
||
<figureCitation id="0885E0D2FF0EFF24FDBB9CC24F9D0B26" box="[637,726,1014,1041]" captionStart="Fig" captionStartId="138.[189,232,1825,1851]" captionTargetBox="[204,1385,787,1765]" captionTargetId="figure@138.[189,1398,774,1782]" captionTargetPageId="138" captionText="Fig. 51. Meridiania cf. M. convexa Case 1994, teeth. A–D. MSC 38877, median tooth, lower Tallahatta Formation. A. Oral view. B. Labial view. C. Profile view. D. Basal view. E–H. MSC 38822.2, lateral tooth, Gosport Sand. E. Oral view. F. Labial view. G. Lingual view. H. Basal view. I–L. MSC 38822.1, lateral tooth, Gosport Sand. I. Oral view. J. Labial view. K. Lingual view. L. Basal view. M–O. MSC 38820, lateral tooth, basal Gosport Sand. M. Oral view. N. Lingual view. O. Basal view. Labial at top in oral and basal views. Scale bars = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.3660359" httpUri="https://zenodo.org/record/3660359/files/figure.png" pageId="139" pageNumber="140">Fig. 51</figureCitation>
|
||
A–D), was compared to a sample of several hundred
|
||
<taxonomicName id="57BE87D4FF0EFF24FF7B9B2F4C0E0B03" authorityName="Case" authorityYear="1994" box="[189,325,1051,1076]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="species" species="convexa">
|
||
<emphasis id="A2CA2045FF0EFF24FF7B9B2F4C0E0B03" box="[189,325,1051,1076]" italics="true" pageId="139" pageNumber="140">M. convexa</emphasis>
|
||
</taxonomicName>
|
||
lateral teeth from the upper Thanetian Williamsburg Formation of
|
||
<collectingRegion id="527A32B5FF0EFF24FBA69B2E48590B03" box="[1120,1298,1050,1076]" country="United States of America" name="South Carolina" pageId="139" pageNumber="140">South Carolina</collectingRegion>
|
||
(at SC). The only notable differences between the samples is that MSC 38822.1 exhibits a slightly thicker crown margin and the furrows at the lingual crown foot are more concave. However, as
|
||
<bibRefCitation id="F42F81A6FF0EFF24FBA49B5548630B4C" author="Cicimurri D. J." box="[1122,1320,1121,1147]" pageId="139" pageNumber="140" pagination="99 - 107" refId="ref139505" refString="Cicimurri D. J. 2010. On the dentition of Meridiania convexa Case (Myliobatoidea), an extinct early Eocene ray from the United States. Cainozoic Research 7 (1 - 2): 99 - 107." type="journal article" year="2010">Cicimurri (2010)</bibRefCitation>
|
||
noted, the crowns of
|
||
<taxonomicName id="57BE87D4FF0EFF24FEAE9BB14CBB0BA9" authorityName="Case" authorityYear="1994" box="[360,496,1157,1182]" class="Elasmobranchii" family="Dasyatidae" genus="Meridiania" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myliobatiformes" pageId="139" pageNumber="140" phylum="Chordata" rank="species" species="convexa">
|
||
<emphasis id="A2CA2045FF0EFF24FEAE9BB14CBB0BA9" box="[360,496,1157,1182]" italics="true" pageId="139" pageNumber="140">M. convexa</emphasis>
|
||
</taxonomicName>
|
||
lateral teeth are variable and the slight differences observed on the Gosport Sand specimen cannot be accurately interpreted at this time. Suffice to say, the specimens represent a significant range extension for the genus, from Zone NP11 to Zone NP14 (Tallahatta Formation), with the youngest known record occurring in the Gosport Sand (Zone NP17).
|
||
</paragraph>
|
||
<paragraph id="9001FC57FF0EFF24FF7B9A054E5F0A7C" blockId="139.[189,788,1329,1355]" box="[189,788,1329,1355]" pageId="139" pageNumber="140">
|
||
<heading id="CB494B3BFF0EFF24FF7B9A054E5F0A7C" bold="true" box="[189,788,1329,1355]" fontSize="11" level="3" pageId="139" pageNumber="140" reason="3">
|
||
<emphasis id="A2CA2045FF0EFF24FF7B9A054E5F0A7C" bold="true" box="[189,788,1329,1355]" pageId="139" pageNumber="140">
|
||
Stratigraphic and geographic range in
|
||
<collectingRegion id="527A32B5FF0EFF24FD649A054E5F0A7C" box="[674,788,1329,1355]" country="United States of America" name="Alabama" pageId="139" pageNumber="140">Alabama</collectingRegion>
|
||
</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="9001FC57FF0EFF24FF7B9A544C860AF6" blockId="139.[189,1398,1376,1474]" pageId="139" pageNumber="140">The specimens in our sample were collected from the lower Tallahatta Formation at site ADl-1, the basal Gosport Sand at site ACl-4, and the Gosport Sand at site ACl-15. Upper Ypresian and middle Bartonian, zones NP14 and NP17.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |