167 lines
15 KiB
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167 lines
15 KiB
XML
<document ID-DOI="10.1111/j.1096-3642.2008.00412.x" ID-ISSN="0024-4082" approvalRequired="10" approvalRequired_for_taxonomicNames="2" approvalRequired_for_textStreams="8" checkinTime="1630461177822" checkinUser="felipe" docAuthor="Kotov, Alexey A." docDate="2009" docId="53258785FFAF1F61E64DFC45FC71F8AA" docLanguage="en" docName="j.1096-3642.2008.00412.x.pdf" docOrigin="Zoological Journal of the Linnean Society 155 (2)" docSource="https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00412.x" docStyle="DocumentStyle:0DD8C314D74634CE09062A86991413F8.1:ZoolJLinnSoc.2002-2009.journal_article" docStyleId="0DD8C314D74634CE09062A86991413F8" docStyleName="ZoolJLinnSoc.2002-2009.journal_article" docStyleVersion="1" docTitle="Palaeorak Kotov 2009, GEN. NOV." docType="treatment" docVersion="3" lastPageNumber="259" masterDocId="AF1CFFFDFFA91F67E771FF89FFE6FFC5" masterDocTitle="A revision of the extinct Mesozoic family Prochydoridae Smirnov, 1992 (Crustacea: Cladocera) with a discussion of its phylogenetic position" masterLastPageNumber="265" masterPageNumber="253" pageNumber="259" updateTime="1631078423765" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A revision of the extinct Mesozoic family Prochydoridae Smirnov, 1992 (Crustacea: Cladocera) with a discussion of its phylogenetic position</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Kotov, Alexey A.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Zoological Journal of the Linnean Society</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2009</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2009-02-28</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>155</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>2</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>253</mods:start>
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<mods:end>265</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00412.x</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.1111/j.1096-3642.2008.00412.x</mods:identifier>
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<mods:identifier type="ISSN">0024-4082</mods:identifier>
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</mods:mods>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.5492596" ID-Zenodo-Dep="5492596" LSID="urn:lsid:plazi:treatment:53258785FFAF1F61E64DFC45FC71F8AA" httpUri="http://treatment.plazi.org/id/53258785FFAF1F61E64DFC45FC71F8AA" lastPageNumber="259" pageId="6" pageNumber="259">
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<subSubSection box="[316,586,972,993]" pageId="6" pageNumber="259" type="nomenclature">
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<paragraph blockId="6.[316,586,972,993]" box="[316,586,972,993]" pageId="6" pageNumber="259">
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<heading box="[316,586,972,993]" centered="true" fontSize="9" level="2" pageId="6" pageNumber="259" reason="2">
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<taxonomicName authority="Kotov, 2009" authorityName="Kotov" authorityYear="2009" box="[316,455,972,993]" class="Branchiopoda" family="Prochydoridae" genus="Palaeorak" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="259" phylum="Arthropoda" rank="genus" status="GEN. NOV.">PALAEORAK</taxonomicName>
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<emphasis bold="true" box="[466,586,972,993]" pageId="6" pageNumber="259">
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<taxonomicNameLabel box="[466,586,972,993]" pageId="6" pageNumber="259" rank="genus">GEN. NOV.</taxonomicNameLabel>
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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 pageId="6" pageNumber="259" type="materials_examined">
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<paragraph blockId="6.[144,723,1010,1032]" box="[144,723,1010,1032]" pageId="6" pageNumber="259">
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<emphasis box="[144,626,1010,1032]" italics="true" pageId="6" pageNumber="259">
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Type (sole) species:
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<taxonomicName authority="Kotov, 2009" authorityName="Kotov" authorityYear="2009" box="[368,626,1010,1031]" class="Branchiopoda" family="Prochydoridae" genus="Palaeorak" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="259" phylum="Arthropoda" rank="species" species="scherbakovi" status="sp. nov.">Palaeorak scherbakovi</taxonomicName>
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</emphasis>
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<taxonomicNameLabel box="[636,723,1011,1032]" pageId="6" pageNumber="259" rank="species">sp. nov.</taxonomicNameLabel>
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</paragraph>
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<paragraph blockId="6.[144,759,1077,1252]" pageId="6" pageNumber="259">
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<emphasis box="[144,269,1077,1098]" italics="true" pageId="6" pageNumber="259">Etymology:</emphasis>
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The name of the new genus comes from Greek
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<emphasis box="[221,297,1107,1128]" italics="true" pageId="6" pageNumber="259">Palaeo</emphasis>
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(ancient), and
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<taxonomicName authorityName="Smirnov & Timms" authorityYear="1983" box="[471,517,1107,1128]" class="Branchiopoda" genus="Rak" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="259" phylum="Arthropoda" rank="genus">
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<emphasis box="[471,517,1107,1128]" italics="true" pageId="6" pageNumber="259">Rak</emphasis>
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</taxonomicName>
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, the generic name of a chydorid with blunt rostrum and well-developed setae on the ventral margin of the valve, described by
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<bibRefCitation author="Smirnov NN & Timms BV" box="[144,445,1199,1221]" pageId="6" pageNumber="259" pagination="1 - 132" refId="ref5715" refString="Smirnov NN, Timms BV. 1983. A revision of the Australian Cladocera (Crustacea). Records of the Australian Museum, Supplement 1: 1 - 132." type="journal article" year="1983">Smirnov & Timms (1983)</bibRefCitation>
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. The name
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<taxonomicName authorityName="Smirnov & Timms" authorityYear="1983" box="[587,633,1199,1220]" class="Branchiopoda" genus="Rak" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="259" phylum="Arthropoda" rank="genus">
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<emphasis box="[587,633,1199,1220]" italics="true" pageId="6" pageNumber="259">Rak</emphasis>
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</taxonomicName>
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is derived from the Russian word (rak) for a crustacean.
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</paragraph>
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<paragraph blockId="6.[144,759,1296,1471]" pageId="6" pageNumber="259">
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<emphasis box="[144,262,1297,1318]" italics="true" pageId="6" pageNumber="259">Diagnosis:</emphasis>
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Body moderately high, head capsule of ‘chydorid-type’ (compressed dorso-ventrally), covered with ‘flat’ head shield with rostrum truncated, valves with denticles and short setae along ventral margin of valves, mandible attached to point of joint of head shield and valve.
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</paragraph>
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<paragraph blockId="6.[144,759,1516,1569]" pageId="6" pageNumber="259">
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<emphasis box="[144,270,1516,1537]" italics="true" pageId="6" pageNumber="259">Comments:</emphasis>
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The genus is probably a few million years younger than
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<taxonomicName authorityName="Smirnov" authorityYear="1992" box="[309,451,1547,1568]" class="Branchiopoda" family="Branchiopoda (awaiting allocation)" genus="Prochydorus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Branchiopoda (awaiting allocation)" pageId="6" pageNumber="259" phylum="Arthropoda" rank="genus">
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<emphasis box="[309,451,1547,1568]" italics="true" pageId="6" pageNumber="259">Prochydorus</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Smirnov" authorityYear="1992" box="[513,629,1547,1568]" class="Branchiopoda" family="Branchiopoda (awaiting allocation)" genus="Archeoxus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Branchiopoda (awaiting allocation)" pageId="6" pageNumber="259" phylum="Arthropoda" rank="genus">
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<emphasis box="[513,629,1547,1568]" italics="true" pageId="6" pageNumber="259">Archeoxus</emphasis>
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</taxonomicName>
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.
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</paragraph>
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<paragraph blockId="6.[239,663,1627,1680]" box="[239,663,1627,1648]" pageId="6" pageNumber="259">
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<taxonomicName authority="Kotov, 2009" authorityName="Kotov" authorityYear="2009" box="[239,552,1627,1648]" class="Branchiopoda" family="Prochydoridae" genus="Palaeorak" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="261" phylum="Arthropoda" rank="species" species="scherbakovi" status="gen. nov., sp. nov.">PALAEORAK SCHERBAKOVI</taxonomicName>
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<emphasis bold="true" box="[562,663,1627,1648]" pageId="6" pageNumber="259">
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<taxonomicNameLabel box="[562,663,1627,1648]" pageId="6" pageNumber="259" rank="species">SP. NOV.</taxonomicNameLabel>
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</emphasis>
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</paragraph>
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<paragraph blockId="6.[239,663,1627,1680]" box="[339,563,1658,1680]" pageId="6" pageNumber="259">
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(
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<collectionCode box="[348,401,1659,1680]" pageId="6" pageNumber="259">FIGS</collectionCode>
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1G–J, 5A–H)
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</paragraph>
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<paragraph blockId="6.[144,759,1697,1903]" pageId="6" pageNumber="259">
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<emphasis box="[144,295,1697,1719]" italics="true" pageId="6" pageNumber="259">Type locality:</emphasis>
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Khasurty. Outcrops at Khasurty River,
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<quantity box="[144,214,1728,1750]" metricMagnitude="4" metricUnit="m" metricValue="1.0" pageId="6" pageNumber="259" unit="km" value="10.0">10 km</quantity>
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south of Tsakir, Zakamensk District, Buryat Autonomous Republic, Asian
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<collectingCountry box="[529,609,1758,1780]" name="Russia" pageId="6" pageNumber="259">Russia</collectingCountry>
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. Based on palaeofauna analysis, the Mesozoic water body represented by these sediments was reconstructed as a small mountain lake surrounded by a forest composed of different plants (D. E. Scherbakov, pers. comm.).
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</paragraph>
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<paragraph blockId="6.[806,1421,416,561]" pageId="6" pageNumber="259">
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<emphasis box="[806,855,416,437]" italics="true" pageId="6" pageNumber="259">Age:</emphasis>
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Glushkov Formation, probably, earliest Cretaceous. This recently discovered locality is poorly studied. Among fossil insects, characteristic Cretaceous taxa are more prevalent than Jurassic taxa (D. E. Scherbakov, pers. comm.).
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</paragraph>
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<paragraph blockId="6.[806,1421,605,688]" pageId="6" pageNumber="259">
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<emphasis box="[806,932,605,626]" italics="true" pageId="6" pageNumber="259">Etymology:</emphasis>
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The species is dedicated to Dr D. E. Scherbakov (
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<collectionCode box="[973,1023,636,658]" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="6" pageNumber="259">PIN</collectionCode>
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), who found micro-crustacean impressions on rock fragments from Khasurty.
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</paragraph>
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<paragraph blockId="6.[806,1422,733,847]" pageId="6" pageNumber="259">
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<materialsCitation collectionCode="PIN" county="Russian Academy of Sciences" location="An" municipality="Palaeontological Institute of Russian Academy" pageId="6" pageNumber="259" specimenCode="PIN 5026" specimenCount="1" typeStatus="holotype">
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<emphasis box="[806,912,733,754]" italics="true" pageId="6" pageNumber="259">
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<typeStatus box="[806,906,733,754]" pageId="6" pageNumber="259">Holotype</typeStatus>
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:
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</emphasis>
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<location LSID="urn:lsid:plazi:treatment:53258785FFAF1F61E64DFC45FC71F8AA:DE536048FFAF1F61E4D1FD54FC27FD37" box="[928,961,733,754]" county="Russian Academy of Sciences" municipality="Palaeontological Institute of Russian Academy" name="An" pageId="6" pageNumber="259">An</location>
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impression of a specimen in lateral position,
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<quantity box="[917,1002,763,785]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" pageId="6" pageNumber="259" unit="mm" value="2.5">2.5 mm</quantity>
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in length, in the collection of the
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<collectingMunicipality box="[806,1382,794,816]" pageId="6" pageNumber="259">
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Palaeontological Institute of
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<collectingCounty box="[1169,1382,794,816]" pageId="6" pageNumber="259">Russian Academy</collectingCounty>
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</collectingMunicipality>
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of Sciences,
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<specimenCode box="[919,1033,824,846]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="6" pageNumber="259">PIN 5026</specimenCode>
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/178.
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</materialsCitation>
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</paragraph>
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<paragraph blockId="6.[806,1421,891,1005]" pageId="6" pageNumber="259">
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<materialsCitation collectionCode="PIN" pageId="6" pageNumber="259" specimenCode="PIN 5026" specimenCount="1" typeStatus="paratype">
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<emphasis box="[806,926,892,913]" italics="true" pageId="6" pageNumber="259">
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<typeStatus box="[806,919,892,913]" pageId="6" pageNumber="259">Paratypes</typeStatus>
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:
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</emphasis>
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97 relatively well-preserved specimens on 22 rock fragments,
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<specimenCode box="[1042,1159,921,943]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="6" pageNumber="259">PIN 5026</specimenCode>
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/89-177, 179-186 (each number is the access number for each specimen, rather than each rock fragment)
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</materialsCitation>
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.
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</paragraph>
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<paragraph blockId="6.[806,1421,1049,1775]" pageId="6" pageNumber="259">
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<emphasis box="[806,942,1050,1071]" italics="true" pageId="6" pageNumber="259">Description:</emphasis>
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Body subovoid in lateral view, moderately high (height/length = 0.71–0.79), highest point of dorsum greatly prominent under head level, postero-dorsal angle well defined, postero-ventral angle widely rounded. Head about one-third body length, covered with a ‘flat’ head shield, which ends proximally in a blunt rostrum. In some specimens there is a shallow depression at the posterior border of head, which may be a result of specimen deformation. The valve ventral margin is supplied with small denticles and short marginal setae (preserved only in some specimens). The postabdomen is supplied with a pair of elongated, slightly curved terminal claws, their incurved (dorsal) side armed with small denticles, but lacking a basal spine. Antenna I was not found. Antenna relatively long, about half body length or longer, its basal segment long, exopod 0.33–0.38 body length. Both exopod and endopods with proximal segments very long, longer than two following segments. Antennal formula (5–7)–(1)–(3)/(1)–(1)–(3). No spines were found on any segments. Mandibles relatively small, attached at body where head and valve join (instead of attached to the head shield in chydorids). Limbs are not distinct. Size 1.8–3.0 mm.
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</paragraph>
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<paragraph blockId="6.[806,1421,1820,1903]" pageId="6" pageNumber="259">
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<emphasis box="[806,932,1820,1841]" italics="true" pageId="6" pageNumber="259">Comments:</emphasis>
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In contrast to Khotont, only one fossilized cladoceran,
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<taxonomicName authority="Kotov, 2009" authorityName="Kotov" authorityYear="2009" box="[951,1122,1850,1872]" class="Branchiopoda" family="Prochydoridae" genus="Palaeorak" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="6" pageNumber="259" phylum="Arthropoda" rank="species" species="scherbakovi" status="sp. nov.">
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<emphasis box="[951,1122,1850,1872]" italics="true" pageId="6" pageNumber="259">P. scherbakovi</emphasis>
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</taxonomicName>
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<taxonomicNameLabel box="[1139,1235,1851,1872]" pageId="6" pageNumber="259" rank="species">sp. nov.</taxonomicNameLabel>
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, was found in Khasurty.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |