127 lines
14 KiB
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127 lines
14 KiB
XML
<document id="B6909C7DA9ABDB15999B58F9FACDFCED" ID-DOI="10.11646/zootaxa.3927.1.1" ID-GBIF-Dataset="c9f96009-d3d4-4977-9cd5-6004214d1036" ID-ISSN="1175-5326" ID-Zenodo-Dep="288034" ID-ZooBank="42B56D11-9B18-4FCC-B632-30A46AB0205C" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461008886271" checkinUser="plazi" docAuthor="Koppka, Jens" docDate="2015" docId="039087D7C00C4635FF68FEE1FD4630BE" docLanguage="en" docName="zt03927p117.pdf" docOrigin="Zootaxa 3927 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Nanogyra Beurlen 1958" docType="treatment" docVersion="7" lastPageNumber="22" masterDocId="FFA9FFAFC0194620FFFFFFC3FFF33303" masterDocTitle="Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland — Ostreoidea" masterLastPageNumber="117" masterPageNumber="1" pageNumber="22" updateTime="1698566318747" updateUser="plazi">
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<mods:titleInfo id="7DFD029C3169D188BFD6E82EF42B5E1F">
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<mods:title id="47AB6E198E449CE966AA1797F85C4170">Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland — Ostreoidea</mods:title>
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</mods:titleInfo>
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<mods:name id="26BCAB85379879979A8588B86B5886B3" type="personal">
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<mods:namePart id="63AA341D6DC4B396A2B2327BDABD84BE">Koppka, Jens</mods:namePart>
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<mods:typeOfResource id="F66A16F09A05496879881F3055559CBC">text</mods:typeOfResource>
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<mods:title id="DCE8D8D0D102A0C70E95826665E3D87E">Zootaxa</mods:title>
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<mods:part id="C76059070927575596E27F4ACDE410F9">
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<mods:date id="EC40A50F7F11F4F09A35D7C193A9671D">2015</mods:date>
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<mods:detail id="97D4E636A6CE1712A005F7484B575323" type="volume">
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<mods:number id="6FA2D789351592F8B2DE51AF42AB6A72">3927</mods:number>
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<mods:detail id="F1CDD8723F32C5C3283D7E7A1B59A26F" type="issue">
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<mods:number id="1261F31B98591B606CE52004B4ACBFB2">1</mods:number>
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<mods:classification id="2BF479A0709F6EA47C22C88F15821176">journal article</mods:classification>
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<mods:identifier id="E75AF1F4765BDB6832C391D85E1FDB1F" type="DOI">10.11646/zootaxa.3927.1.1</mods:identifier>
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<treatment id="039087D7C00C4635FF68FEE1FD4630BE" ID-DOI="http://doi.org/10.5281/zenodo.6102692" ID-GBIF-Taxon="119599563" ID-Zenodo-Dep="6102692" LSID="urn:lsid:plazi:treatment:039087D7C00C4635FF68FEE1FD4630BE" httpUri="http://treatment.plazi.org/id/039087D7C00C4635FF68FEE1FD4630BE" lastPageNumber="22" pageId="21" pageNumber="22">
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<subSubSection id="C323654AC00C4635FF68FEE1FDE8323F" box="[151,539,290,316]" pageId="21" pageNumber="22" type="nomenclature">
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<paragraph id="8B8636C1C00C4635FF68FEE1FDE8323F" blockId="21.[151,539,290,316]" box="[151,539,290,316]" pageId="21" pageNumber="22">
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<heading id="D0CE81ADC00C4635FF68FEE1FDE8323F" bold="true" box="[151,539,290,316]" fontSize="11" level="1" pageId="21" pageNumber="22" reason="1">
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<emphasis id="B94DEAD3C00C4635FF68FEE1FDE8323F" bold="true" box="[151,539,290,316]" pageId="21" pageNumber="22">
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Genus
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<taxonomicName id="4C394D42C00C4635FF11FEE1FDE8323F" authority="Beurlen, 1958" authorityName="Beurlen" authorityYear="1958" box="[238,539,290,316]" class="Bivalvia" family="Gryphaeidae" genus="Nanogyra" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pterioida" pageId="21" pageNumber="22" phylum="Mollusca" rank="genus">
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<emphasis id="B94DEAD3C00C4635FF11FEE1FE94323F" bold="true" box="[238,359,290,316]" italics="true" pageId="21" pageNumber="22">Nanogyra</emphasis>
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<bibRefCitation id="EFA84B30C00C4635FE91FEE1FDE8323F" author="Beurlen" box="[366,539,290,316]" pageId="21" pageNumber="22" refString="Beurlen, K. (1958) Die Exogyren. Ein Beitrag zur phylogenetischen Morphogenese der Austern. Neues Jahrbuch fur Geologie und Palaontologie, Monatshefte, 5, 197 - 217." type="journal article" year="1958">Beurlen, 1958</bibRefCitation>
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</taxonomicName>
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</emphasis>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C323654AC00C4635FF68FEAAFAB7327C" box="[151,1348,361,383]" pageId="21" pageNumber="22" type="materials_examined">
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<paragraph id="8B8636C1C00C4635FF68FEAAFAB7327C" blockId="21.[151,1348,361,383]" box="[151,1348,361,383]" pageId="21" pageNumber="22">
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<emphasis id="B94DEAD3C00C4635FF68FEAAFEEF327C" bold="true" box="[151,284,361,383]" pageId="21" pageNumber="22">
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<typeStatus id="54828863C00C4635FF68FEAAFF3F327C" box="[151,204,361,383]" pageId="21" pageNumber="22">Type</typeStatus>
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species
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</emphasis>
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.
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<taxonomicName id="4C394D42C00C4635FED6FEAAFD8D327C" authority="J. Sowerby, 1822" authorityName="J. Sowerby" authorityYear="1822" box="[297,638,361,383]" class="Bivalvia" family="Gryphaeidae" genus="Gryphaea" higherTaxonomySource="CoL" kingdom="Animalia" order="Ostreida" pageId="21" pageNumber="22" phylum="Mollusca" rank="species" species="nana">
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<emphasis id="B94DEAD3C00C4635FED6FEAAFE3B327C" box="[297,456,361,383]" italics="true" pageId="21" pageNumber="22">Gryphaea nana</emphasis>
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J. Sowerby, 1822
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</taxonomicName>
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, p. 114, pl. 383 (left figure); BM 43340c, Kimmeridge Clay,
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<collectingCountry id="F32E7651C00C4635FB16FEAAFAB2327C" box="[1257,1345,361,383]" name="United Kingdom" pageId="21" pageNumber="22">England</collectingCountry>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C323654AC00C4635FF68FE6FFBEF3004" pageId="21" pageNumber="22" type="diagnosis">
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<paragraph id="8B8636C1C00C4635FF68FE6FFD53317B" blockId="21.[151,1437,428,957]" pageId="21" pageNumber="22">
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<emphasis id="B94DEAD3C00C4635FF68FE6FFEF932C6" bold="true" box="[151,266,428,453]" pageId="21" pageNumber="22">Diagnosis</emphasis>
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(modified from
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<bibRefCitation id="EFA84B30C00C4635FE35FE6FFDAC32C7" author="Stenzel" box="[458,607,428,453]" pageId="21" pageNumber="22" refString="Stenzel, H. B. (1971) Oysters. In: Moore, R. C. (Eds.), Treatise on Invertebrate Paleontology. Part N, Mollusca 6 (Bivalvia). Vol. 3. Geological Society of America, University of Kansas, Boulder, pp. N 953 - N 1124." type="journal article" year="1971">Stenzel 1971</bibRefCitation>
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, p. N1121). Thin-shelled, inequivalve.
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<taxonomicName id="4C394D42C00C4635FBE0FE6FFB8032C6" box="[1055,1139,428,453]" class="Bivalvia" family="Ostreidae" genus="Actinostreon" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ostreoida" pageId="21" pageNumber="69" phylum="Mollusca" rank="species" species="outline">Outline</taxonomicName>
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suborbicular, subtrigonal, elliptical, or ovate to comma-shaped (virguliform of authors); always opisthogyrate, degree of spirality variable. Left valve moderately convex to globular, smooth or with antimarginal riblets, rarely with small plicae; RV overall slightly concave or convex, with sharp, curved anterior carina. Posterior ligament bourrelet reduced in length, usually forming a ridge with the dorsal margin during early growth stages. Chomata known since Bathonian [see below,
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<taxonomicName id="4C394D42C00C4635FF18FDA2FD87317B" authority="Goldfuss, 1833" authorityName="Goldfuss" authorityYear="1833" box="[231,628,607,632]" class="Bivalvia" family="Gryphaeidae" genus="Nanogyra" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pterioida" pageId="21" pageNumber="22" phylum="Mollusca" rank="species" species="reniformis" subGenus="Palaeogyra">
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<emphasis id="B94DEAD3C00C4635FF18FDA2FEF1317B" box="[231,258,609,632]" italics="true" pageId="21" pageNumber="22">N.</emphasis>
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(
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<emphasis id="B94DEAD3C00C4635FEEEFDA2FED7317B" box="[273,292,609,632]" italics="true" pageId="21" pageNumber="22">P.</emphasis>
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)
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<emphasis id="B94DEAD3C00C4635FEC9FDA3FE59317B" box="[310,426,608,632]" italics="true" pageId="21" pageNumber="22">reniformis</emphasis>
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(Goldfuss, 1833)
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</taxonomicName>
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(b)].
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</paragraph>
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<paragraph id="8B8636C1C00C4635FF38FD47FBEF3004" blockId="21.[151,1437,428,957]" pageId="21" pageNumber="22">
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Microstructure largely compact foliate some small chambers may be present close to the umbo and shell margin, complex cross-foliation common. Right valve with outer, coarsely prismatic layer (
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<bibRefCitation id="EFA84B30C00C4635FB4EFD64FABE31C3" author="Siewert" box="[1201,1357,679,704]" pageId="21" pageNumber="22" refString="Siewert, W. (1972) Schalenbau und Stammesgeschichte der Austern. Stuttgarter Beitrage zur Naturkunde, B, 1, 1 - 57." type="journal article" year="1972">Siewert 1972</bibRefCitation>
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, p. 19;
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<bibRefCitation id="EFA84B30C00C4635FF68FD0FFECB31E7" author="Malchus" box="[151,312,716,741]" pageId="21" pageNumber="22" refString="Malchus, N. (1990) Revision der Kreide-Austern (Bivalvia: Pteriomorphia) Agyptens (Biostratigraphie, Systematik). Berliner Geowissenschaftliche Abhandlungen, Reihe A, 125, 1 - 231." type="journal article" year="1990">Malchus 1990</bibRefCitation>
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, p. 109;
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<bibRefCitation id="EFA84B30C00C4635FE67FD0FFD4D31E7" author="Malchus" box="[408,702,716,741]" pageId="21" pageNumber="22" refString="Malchus, N. & Aberhan, M. (1998) Transitional gryphaeate / exogyrate oysters (Bivalvia: Gryphaeidae) from the Lower Jurassic of Northern Chile. Journal of Paleontology, 72 (4), 619 - 631." type="journal article" year="1998">Malchus & Aberhan 1998</bibRefCitation>
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, p. 629). Most species do not exceed
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<quantity id="4CC19B24C00C4635FBA0FD0FFB6631E7" box="[1119,1173,716,740]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="21" pageNumber="22" unit="cm" value="3.0">3 cm</quantity>
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in largest diameter, but for some larger species exceptional specimens may reach a height of up to
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<quantity id="4CC19B24C00C4635FC22FD33FBEB3004" box="[989,1048,752,775]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="21" pageNumber="22" unit="cm" value="7.0">7 cm</quantity>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C323654AC00C4635FF38FCD7FD4630BE" pageId="21" pageNumber="22" type="discussion">
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<paragraph id="8B8636C1C00C4635FF38FCD7FD4630BE" blockId="21.[151,1437,428,957]" pageId="21" pageNumber="22">
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<emphasis id="B94DEAD3C00C4635FF38FCD7FEC7302E" bold="true" box="[199,308,788,813]" pageId="21" pageNumber="22">Remarks</emphasis>
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. The present diagnosis deliberately excludes?
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<taxonomicName id="4C394D42C00C4635FCA5FCD6FAAA302E" authority="Goldfuss, 1833" authorityName="Goldfuss" authorityYear="1833" box="[858,1369,788,813]" class="Bivalvia" family="Gryphaeidae" genus="Nanogyra" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pterioida" pageId="21" pageNumber="22" phylum="Mollusca" rank="species" species="auricularis" subGenus="Nanogyra">
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<emphasis id="B94DEAD3C00C4635FCA5FCD6FC87302F" box="[858,884,789,812]" italics="true" pageId="21" pageNumber="22">N.</emphasis>
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(
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<emphasis id="B94DEAD3C00C4635FC77FCD6FC0B302F" box="[904,1016,789,812]" italics="true" pageId="21" pageNumber="22">Nanogyra</emphasis>
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)
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<emphasis id="B94DEAD3C00C4635FBF2FCD7FB79302E" box="[1037,1162,788,813]" italics="true" pageId="21" pageNumber="22">auricularis</emphasis>
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(Goldfuss, 1833)
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</taxonomicName>
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(b) as described in
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<bibRefCitation id="EFA84B30C00C4635FED0FCF4FD843053" author="Malchus" box="[303,631,823,848]" pageId="21" pageNumber="22" refString="Malchus, N. & Aberhan, M. (1998) Transitional gryphaeate / exogyrate oysters (Bivalvia: Gryphaeidae) from the Lower Jurassic of Northern Chile. Journal of Paleontology, 72 (4), 619 - 631." type="journal article" year="1998">Malchus & Aberhan (1998)</bibRefCitation>
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. The species has an unusual large size (
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<emphasis id="B94DEAD3C00C4635FBA8FCFAFB8A3053" box="[1111,1145,825,848]" italics="true" pageId="21" pageNumber="22">ca.</emphasis>
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<quantity id="4CC19B24C00C4635FB7BFCFBFB213053" box="[1156,1234,824,848]" metricMagnitude="-1" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="22" unit="cm" value="10.0">10 cm</quantity>
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), numerous large chambers, and a tendency to become uncoiled reaching a ligament area height of up to
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<quantity id="4CC19B24C00C4635FB8BFC9FFB423077" box="[1140,1201,860,884]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="21" pageNumber="22" unit="cm" value="4.0">4 cm</quantity>
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. It is equally unclear whether the specimens from Europe and those from
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<collectingCountry id="F32E7651C00C4635FD1AFCBCFCD2309B" box="[741,801,895,920]" name="Chile" pageId="21" pageNumber="22">Chile</collectingCountry>
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belong to the same species.
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<bibRefCitation id="EFA84B30C00C4635FB9BFCBCFA6F309B" author="Malchus" box="[1124,1436,895,920]" pageId="21" pageNumber="22" refString="Malchus, N. & Aberhan, M. (1998) Transitional gryphaeate / exogyrate oysters (Bivalvia: Gryphaeidae) from the Lower Jurassic of Northern Chile. Journal of Paleontology, 72 (4), 619 - 631." type="journal article" year="1998">Malchus & Aberhan (1998)</bibRefCitation>
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hypothesized that it represents a different genus.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |