194 lines
29 KiB
XML
194 lines
29 KiB
XML
<document id="67422E7A3B82EFC897E502F8EC1B82B8" ID-DOI="10.1111/j.1096-3642.2006.00204.x" ID-ISSN="0024-4082" ID-Zenodo-Dep="5435761" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630434788569" checkinUser="diego" docAuthor="Kotov, Alexey A. & Korovchinsky, Nikolai M." docDate="2006" docId="DA0A87868E64FFD58DE6FB448CCABA69" docLanguage="en" docName="j.1096-3642.2006.00204.x.pdf" docOrigin="Zoological Journal of the Linnean Society 146 (2)" docSource="https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2006.00204.x" docStyle="DocumentStyle:0DD8C314D74634CE09062A86991413F8.2:ZoolJLinnSoc.2002-2009.journal_article" docStyleId="0DD8C314D74634CE09062A86991413F8" docStyleName="ZoolJLinnSoc.2002-2009.journal_article" docStyleVersion="2" docTitle="Archelatona zherikhini Kotov & Korovchinsky 2006, SP. NOV." docType="treatment" docVersion="4" lastPageNumber="270" masterDocId="2633FFFE8E65FFD18D1BFF9F8D52B862" masterDocTitle="First record of fossil Mesozoic Ctenopoda (Crustacea, Cladocera)" masterLastPageNumber="274" masterPageNumber="269" pageNumber="270" updateTime="1699270285935" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:mods id="A38DB55450BE19C3090419115479D622" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="643FB55F87558D234B05D1EF793ACFA0">
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<mods:title id="DC1555A29CC098305FB760887E9EA10A">First record of fossil Mesozoic Ctenopoda (Crustacea, Cladocera)</mods:title>
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</mods:titleInfo>
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<mods:name id="658B7F45C0C9FF19274254F9C87FC0AC" type="personal">
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<mods:roleTerm id="0F8201923E0A1B92127340435CD9ADAF">Author</mods:roleTerm>
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<mods:namePart id="C9F30985700DD7AA7B423E35743AD4A3">Kotov, Alexey A.</mods:namePart>
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<mods:name id="B403C2B1F73737D3135E632866BCDA86" type="personal">
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<mods:roleTerm id="6E77AE272CB2B39D6FEDF1293A8212DA">Author</mods:roleTerm>
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<mods:namePart id="708B5CCD228FEE61048228A70F58B241">Korovchinsky, Nikolai M.</mods:namePart>
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<mods:typeOfResource id="88F3E505752ACAC302C7387B66D6FF9B">text</mods:typeOfResource>
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<mods:title id="C5A204B6E8EFC6EC84D5BB48313EC1CE">Zoological Journal of the Linnean Society</mods:title>
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</mods:titleInfo>
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<mods:part id="16B335D57C104559EAF99FA895E8E930">
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<mods:date id="984F033FBA0C40A9AE3B2CA1A1EF19F7">2006</mods:date>
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<mods:detail id="A9F0421D76A5C9433B290E65D762174D" type="pubDate">
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<mods:number id="800B21082C38F2E87F99E0B3C1716E81">2006-02-28</mods:number>
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<mods:number id="45CCF1E86808CFE6499E64B35D36E268">146</mods:number>
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<mods:number id="3E286D7169306CE43ECB7FADF02FBD69">2</mods:number>
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<mods:url id="A7747D553BBF7D2EB99FE02D9AAEAE3E">https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2006.00204.x</mods:url>
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<mods:classification id="3E5049A2B07503999D10646D9971856C">journal article</mods:classification>
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<mods:identifier id="7680CCE78880F8C917DC7955E666B4B5" type="DOI">10.1111/j.1096-3642.2006.00204.x</mods:identifier>
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<mods:identifier id="0ADD2BD658C4F8482E6A63184B677994" type="ISSN">0024-4082</mods:identifier>
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<treatment id="DA0A87868E64FFD58DE6FB448CCABA69" ID-DOI="http://doi.org/10.5281/zenodo.5490740" ID-Zenodo-Dep="5490740" LSID="urn:lsid:plazi:treatment:DA0A87868E64FFD58DE6FB448CCABA69" httpUri="http://treatment.plazi.org/id/DA0A87868E64FFD58DE6FB448CCABA69" lastPageId="4" lastPageNumber="270" pageId="1" pageNumber="270">
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<subSubSection id="1AB9651B8E64FFD08DE6FB448FFDBC91" box="[253,687,1243,1267]" pageId="1" pageNumber="270" type="nomenclature">
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<paragraph id="521C36908E64FFD08DE6FB448FFDBC91" blockId="1.[253,687,1243,1267]" box="[253,687,1243,1267]" pageId="1" pageNumber="270">
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<heading id="095481FC8E64FFD08DE6FB448FFDBC91" box="[253,687,1243,1267]" centered="true" fontSize="9" level="2" pageId="1" pageNumber="270" reason="2">
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<taxonomicName id="95A34D138E64FFD08DE6FB448F11BC90" authority="Kotov & Korovchinsky, 2006" authorityName="Kotov & Korovchinsky" authorityYear="2006" box="[253,579,1243,1267]" class="Branchiopoda" family="Sididae" genus="Archelatona" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="1" pageNumber="272" phylum="Arthropoda" rank="species" species="zherikhini" status="gen. nov., sp. nov.">ARCHELATONA ZHERIKHINI</taxonomicName>
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<emphasis id="60D7EA828E64FFD08F51FB408FFDBC91" bold="true" box="[586,687,1243,1267]" pageId="1" pageNumber="270">
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<taxonomicNameLabel id="7BE457F98E64FFD08F51FB408FFDBC91" box="[586,687,1243,1267]" pageId="1" pageNumber="270" rank="species">SP. 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 id="1AB9651B8E64FFD58DB9FA9B8CCABA69" lastPageId="4" lastPageNumber="273" pageId="1" pageNumber="270" type="etymology">
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<paragraph id="521C36908E64FFD08DB9FA9B8CA7BDD1" blockId="1.[162,778,1284,1459]" pageId="1" pageNumber="270">
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<emphasis id="60D7EA828E64FFD08DB9FA9B8C4BBD7B" box="[162,281,1284,1305]" italics="true" pageId="1" pageNumber="270">Etymology</emphasis>
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. This species is dedicated to the outstanding palaeontologist, Professor V. V. Zherikhin, whose many contributions include organizing PIN expeditions, collecting fossils and determining taxonomies of fossils. His untimely death in
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<date id="261D10508E64FFD08F13FAE08FE9BDF6" box="[520,699,1407,1429]" pageId="1" pageNumber="270" value="2001-12">December 2001</date>
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was a great loss to Russian science.
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</paragraph>
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<paragraph id="521C36908E64FFD08DB9FA538CC0BF12" blockId="1.[162,778,1483,1904]" pageId="1" pageNumber="270">
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<emphasis id="60D7EA828E64FFD08DB9FA538C60BD82" box="[162,306,1483,1505]" italics="true" pageId="1" pageNumber="270">Type locality</emphasis>
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. Khutel Khara, mudstones
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<quantity id="955B9B758E64FFD08F68FA548FE8BD83" box="[627,698,1483,1505]" metricMagnitude="4" metricUnit="m" metricValue="7.5" pageId="1" pageNumber="270" unit="km" value="75.0">75 km</quantity>
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southeast of Sain Shand, East Gobi Aymag,
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<collectingCountry id="2AB476008E64FFD08F7DFA758F81BE62" box="[614,723,1514,1536]" name="Mongolia" pageId="1" pageNumber="270">Mongolia</collectingCountry>
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. The geological structure of this locality was reported by
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<bibRefCitation id="36324B618E64FFD08DB9F9B88F54BE5F" author="Verzilin NN & Kalmykova NA" box="[162,518,1575,1597]" pageId="1" pageNumber="270" refId="ref4311" refString="Verzilin NN, Kalmykova NA. 1993. Ceolit Mesozoic strata of south-east Mongolia. St Petersburg (Russia), University Press." type="book" year="1993">Verzilin & Kalmykova (1993)</bibRefCitation>
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. The sediments were deposited in a small (but permanent), oligotrophic mountain lake that formed when a volcanic basalt field dammed a valley. More than 3300 impressions of insects from 14 orders and 49 families have been recovered from these sediments (A. G. Ponomarenko, pers. comm.). Ctenopod remains are very common; they appear to have dominated among the group of microscopic animals. Mono-egged daphnid ephippia are also relatively common, but no single adult specimen has been found.
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</paragraph>
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<paragraph id="521C36908E64FFD08E21FF5B8825B89A" blockId="1.[826,1442,195,248]" pageId="1" pageNumber="270">
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<taxonomicName id="95A34D138E64FFD08E21FF5B8E36B8BB" authorityName="Diakonoff" authorityYear="1982" box="[826,868,196,217]" class="Insecta" family="Tortricidae" genus="Age" kingdom="Animalia" order="Lepidoptera" pageId="1" pageNumber="270" phylum="Arthropoda" rank="genus">
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<emphasis id="60D7EA828E64FFD08E21FF5B8E36B8BB" box="[826,868,196,217]" italics="true" pageId="1" pageNumber="270">Age</emphasis>
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</taxonomicName>
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. Lower Tsagan Tsab Formation, Lower Cretaceous, 129 ± 9 Mya (
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<bibRefCitation id="36324B618E64FFD0893AFF7D8839B89A" author="Verzilin NN & Kalmykova NA" box="[1057,1387,226,248]" pageId="1" pageNumber="270" refId="ref4311" refString="Verzilin NN, Kalmykova NA. 1993. Ceolit Mesozoic strata of south-east Mongolia. St Petersburg (Russia), University Press." type="book" year="1993">Verzilin & Kalmykova, 1993</bibRefCitation>
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).
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</paragraph>
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<paragraph id="521C36908E64FFD08E21FE8F8EA0B9BC" blockId="1.[826,1442,272,478]" pageId="1" pageNumber="270">
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<materialsCitation id="E2CB3CCD8E64FFD08E21FE8F8EA0B9BC" collectionCode="PIN" country="Mongolia" county="Holotype'" location="There" municipality="Khutel-Khara" pageId="1" pageNumber="270" specimenCode="PIN 3965" specimenCount="3" typeStatus="holotype">
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<emphasis id="60D7EA828E64FFD08E21FE8F8ECCB947" box="[826,926,272,293]" italics="true" pageId="1" pageNumber="270">
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<typeStatus id="8D1888328E64FFD08E21FE8F8ECCB947" box="[826,926,272,293]" pageId="1" pageNumber="270" type="holotype">Holotype</typeStatus>
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</emphasis>
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.
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<specimenCode id="02059EEB8E64FFD08EB4FE8F894CB944" box="[943,1054,272,294]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3332 (stub sputtered with gold). AII: (7)–(13)/(0)–(1)–(4).
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<location id="577C604B8E64FFD08940FEB089CCB927" LSID="urn:lsid:plazi:treatment:DA0A87868E64FFD58DE6FB448CCABA69:577C604B8E64FFD08940FEB089CCB927" box="[1115,1182,303,325]" country="Mongolia" county="Holotype'" municipality="Khutel-Khara" name="There" pageId="1" pageNumber="270">There</location>
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are two antennae II (belonging to different specimens) on the fragment; the
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<typeStatus id="8D1888328E64FFD08E7EFEF38E94B9E0" box="[869,966,364,386]" pageId="1" pageNumber="270" type="holotype">holotype</typeStatus>
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is the better preserved one, marked by an arrow.
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<location id="577C604B8E64FFD08E90FE148E99B9C3" LSID="urn:lsid:plazi:treatment:DA0A87868E64FFD58DE6FB448CCABA69:577C604B8E64FFD08E90FE148E99B9C3" box="[907,971,395,417]" country="Mongolia" county="Holotype'" municipality="Khutel-Khara" name="Label" pageId="1" pageNumber="270">Label</location>
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of the
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<typeStatus id="8D1888328E64FFD08938FE1489D5B9C3" box="[1059,1159,395,417]" pageId="1" pageNumber="270" type="holotype">holotype</typeStatus>
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: ‘
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<taxonomicName id="95A34D138E64FFD08982FE1488F0B9C2" authority="Kotov & Korovchinsky, 2006" authorityName="Kotov & Korovchinsky" authorityYear="2006" box="[1177,1442,395,416]" class="Branchiopoda" family="Sididae" genus="Archelatona" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="1" pageNumber="270" phylum="Arthropoda" rank="species" species="zherikhini" status="gen. nov., sp. nov.">
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<emphasis id="60D7EA828E64FFD08982FE1488F0B9C2" box="[1177,1442,395,416]" italics="true" pageId="1" pageNumber="270">Archelatona zherikhini</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="7BE457F98E64FFD08E21FE358948B9DD" box="[826,1050,426,447]" pageId="1" pageNumber="270" rank="species">gen. nov., sp. nov.</taxonomicNameLabel>
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,
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<collectingMunicipality id="B278ACEA8E64FFD08935FE368982B9DD" box="[1070,1232,425,447]" pageId="1" pageNumber="270">Khutel-Khara</collectingMunicipality>
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,
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<collectingCountry id="2AB476008E64FFD089FFFE368802B9DD" box="[1252,1360,425,447]" name="Mongolia" pageId="1" pageNumber="270">Mongolia</collectingCountry>
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, 3965/ 3332,
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<collectingCounty id="BB7D4E1C8E64FFD08E64FE578EBCB9BC" box="[895,1006,456,478]" pageId="1" pageNumber="270">Holotype’</collectingCounty>
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.
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</materialsCitation>
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</paragraph>
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<paragraph id="521C36908E64FFD08E21FE688821BCF2" blockId="1.[826,1443,502,1168]" pageId="1" pageNumber="270">
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<materialsCitation id="E2CB3CCD8E64FFD08E21FE68883DBCF2" collectionCode="PIN" pageId="1" pageNumber="270" specimenCode="PIN 3965" specimenCount="1" typeStatus="paratype">
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<emphasis id="60D7EA828E64FFD08E21FE688EF8BA6E" box="[826,938,503,524]" italics="true" pageId="1" pageNumber="270">
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<typeStatus id="8D1888328E64FFD08E21FE688EF8BA6E" box="[826,938,503,524]" pageId="1" pageNumber="270" type="paratype">Paratypes</typeStatus>
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</emphasis>
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. (1)
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<specimenCode id="02059EEB8E64FFD08EC5FE69891FBA6E" box="[990,1101,502,524]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3293. AII: (8)–(> 11)/(0)–(1?)– (4). AII: (8)–(13)/(0)–(1?)–(4). (2)
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<specimenCode id="02059EEB8E64FFD089ACFD8A887ABA49" box="[1207,1320,533,555]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3295. AII: (9)–(13)/(0)–(?)–(?). AII: (7)–(≥ 10)/?. AII: (7)–(> 8)/?. (3)
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<specimenCode id="02059EEB8E64FFD08E21FDCD8EF9BA0A" box="[826,939,594,616]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3298. AII: incomplete. AII: incomplete. (4)
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<specimenCode id="02059EEB8E64FFD08E21FDEE8EFABAE5" box="[826,936,625,647]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3299. Unclear body contour, mandibles and AII: (?)–(≥ 10)/?. AII: (7)–(?)/?. (5)
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<specimenCode id="02059EEB8E64FFD089A4FD0F887CBAC7" box="[1215,1326,655,677]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3301 AII: (7)–(≥ 8)/(0)–(1)–(4). (6)
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<specimenCode id="02059EEB8E64FFD08957FD3189EEBAA6" box="[1100,1212,686,708]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3303. Unclear body contour, mandibles and AII: (8)–(13)/(0)–(?)–(4). (7)
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<specimenCode id="02059EEB8E64FFD08E21FD738EFABB63" box="[826,936,747,769]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3304. AII: (8)–(15)/(0)–(?)–(?). (8)
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<specimenCode id="02059EEB8E64FFD08836FD7388CBBB63" box="[1325,1433,747,769]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/ 3308. AII: incomplete. (9)
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<specimenCode id="02059EEB8E64FFD08974FC95898DBB42" box="[1135,1247,778,800]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3317. Body contour, mandibles and AII: unclear. (10)
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<specimenCode id="02059EEB8E64FFD089F4FCB6880FBB5D" box="[1263,1373,809,831]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3320. AII: (7)–(?)/(0)–(?)–(?). (11)
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<specimenCode id="02059EEB8E64FFD08970FCD7898ABB3F" box="[1131,1240,839,861]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3321. AII: (8)–(?)/ (0)–(2?)–(4). (12)
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<specimenCode id="02059EEB8E64FFD08EE1FCF98934BB1E" box="[1018,1126,870,892]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3323. AII: unclear. (13)
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<specimenCode id="02059EEB8E64FFD08868FCF98E23BBF9" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3324. AII: (11)–(8)/(0)–(1)–(4). AII: unclear. (14)
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<specimenCode id="02059EEB8E64FFD08E21FC3B8EF5BBDB" box="[826,935,931,953]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3325. AII: (≥ 7)–(12)/?. AII: unclear. (15)
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<specimenCode id="02059EEB8E64FFD08868FC3B8E23BBBA" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
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/3326. AII: incomplete. (16)
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<specimenCode id="02059EEB8E64FFD089A3FC5D887ABBBA" box="[1208,1320,962,984]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3332. AII: (?)–(≥ 10)/(0)–(1)–(4) – on the same fragment as the
|
||
<typeStatus id="8D1888328E64FFD08E21FC608ECFBC77" box="[826,925,1023,1045]" pageId="1" pageNumber="270" type="holotype">holotype</typeStatus>
|
||
. (17)
|
||
<specimenCode id="02059EEB8E64FFD08EC1FB9F8915BC77" box="[986,1095,1023,1045]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3333. AII: (≥ 6)–(≥ 12)/(0)–(1)– (4). Body contour, mandibles, two AII (unclear), limbs. (18)
|
||
<specimenCode id="02059EEB8E64FFD08E76FBA28E8BBC31" box="[877,985,1085,1107]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3334. AII: (6?)–(≥ 12)/0-(1)–(4). (19)
|
||
<specimenCode id="02059EEB8E64FFD08868FBA28E20BC13" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3335. AII incomplete. (20)
|
||
<specimenCode id="02059EEB8E64FFD089BCFBC38847BC13" box="[1191,1301,1115,1137]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3337. Many mandibles. (21)
|
||
<specimenCode id="02059EEB8E64FFD08EE9FBE58933BCF2" box="[1010,1121,1146,1168]" collectionCode="PIN" country="Russia" httpUri="http://grbio.org/cool/kjjc-ziy5" name="Paleontological Institute, Russian Academy of Sciences" pageId="1" pageNumber="270">PIN 3965</specimenCode>
|
||
/3338. Many mandibles
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="521C36908E64FFD08E21FB36892FBCDF" blockId="1.[826,1149,1192,1214]" box="[826,1149,1192,1214]" pageId="1" pageNumber="270">
|
||
<emphasis id="60D7EA828E64FFD08E21FB368EF8BCDC" box="[826,938,1193,1214]" italics="true" pageId="1" pageNumber="270">Diagnosis</emphasis>
|
||
. As for the genus.
|
||
</paragraph>
|
||
<paragraph id="521C36908E64FFD58E21FB488CCABA69" blockId="1.[826,1443,1238,1904]" lastBlockId="4.[142,758,195,524]" lastPageId="4" lastPageNumber="273" pageId="1" pageNumber="270">
|
||
<emphasis id="60D7EA828E64FFD08E21FB488EEEBC8E" box="[826,956,1239,1260]" italics="true" pageId="1" pageNumber="270">Description</emphasis>
|
||
. Mostly rami of swimming antennae are preserved, sometimes accompanied by body contours, mandibles and filtering setae of thoracic limbs (
|
||
<figureCitation id="CA982A158E64FFD08E59FAAD8EE4BD2A" box="[834,950,1330,1352]" captionStart="Figure 1" captionStartId="2.[142,220,1795,1814]" captionTargetBox="[151,1412,198,1762]" captionTargetId="figure-99@2.[151,1413,197,1762]" captionTargetPageId="2" captionText="Figure 1. Archelatona zherikhini gen. nov., sp. nov., paratypes, Khutel Khara, Mongolia, Lower Cretaceous. (A) Whole body, impression PIN 3965/3333. (B) The same fragment, mandibles and thoracic limbs. (C) Filtering setae on thoracic limbs. (D) Rami of swimming antenna, and other impressions on fragment PIN 3965/3333. (E) Rami of swimming antenna, PIN 3965/3334. (F) Rami of swimming antenna, PIN 3965/3332. Scale bars: A, 1000 µm; B–F, 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435765" httpUri="https://zenodo.org/record/5435765/files/figure.png" pageId="1" pageNumber="270">Fig. 1A–C</figureCitation>
|
||
). Accordingly, the morphological features of these cladocerans may be reconstructed as follows. Body is probably widely ovoid. Antenna II long and massive, with two-segmented exopod and threesegmented endopod (
|
||
<figureCitation id="CA982A158E64FFD08931FA3289F2BDA0" box="[1066,1184,1453,1475]" captionStart="Figure 1" captionStartId="2.[142,220,1795,1814]" captionTargetBox="[151,1412,198,1762]" captionTargetId="figure-99@2.[151,1413,197,1762]" captionTargetPageId="2" captionText="Figure 1. Archelatona zherikhini gen. nov., sp. nov., paratypes, Khutel Khara, Mongolia, Lower Cretaceous. (A) Whole body, impression PIN 3965/3333. (B) The same fragment, mandibles and thoracic limbs. (C) Filtering setae on thoracic limbs. (D) Rami of swimming antenna, and other impressions on fragment PIN 3965/3333. (E) Rami of swimming antenna, PIN 3965/3334. (F) Rami of swimming antenna, PIN 3965/3332. Scale bars: A, 1000 µm; B–F, 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435765" httpUri="https://zenodo.org/record/5435765/files/figure.png" pageId="1" pageNumber="270">Figs 1D–F</figureCitation>
|
||
,
|
||
<figureCitation id="CA982A158E64FFD089B0FA3289BDBDA1" box="[1195,1263,1453,1475]" captionStart="Figure 2" captionStartId="3.[162,240,1795,1814]" captionTargetBox="[193,1411,195,1763]" captionTargetId="figure-98@3.[193,1412,195,1763]" captionTargetPageId="3" captionText="Figure 2. Archelatona zherikhini gen. nov., sp. nov., holotype, Khutel Khara, Mongolia, Lower Cretaceous, PIN 3965/ 3332 (A–D), and Sididae indet. from Khotont, Jurassic/Cretaceous boundary, PIN 4307/2005 (E–F). (A) Rami of swimming antenna. (B) Articulation of segments of antennal exopod. (C) Reconstruction of antennal rami. (D) Distal segment of exopod. (E,F) Rami of swimming antenna, and their reconstruction. Scale bars: 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435769" httpUri="https://zenodo.org/record/5435769/files/figure.png" pageId="1" pageNumber="270">2A–D</figureCitation>
|
||
). In exopod, the proximal segment relatively short and wide, with a small distolateral spine (
|
||
<figureCitation id="CA982A158E64FFD08940FA7589FDBE62" box="[1115,1199,1514,1536]" captionStart="Figure 2" captionStartId="3.[162,240,1795,1814]" captionTargetBox="[193,1411,195,1763]" captionTargetId="figure-98@3.[193,1412,195,1763]" captionTargetPageId="3" captionText="Figure 2. Archelatona zherikhini gen. nov., sp. nov., holotype, Khutel Khara, Mongolia, Lower Cretaceous, PIN 3965/ 3332 (A–D), and Sididae indet. from Khotont, Jurassic/Cretaceous boundary, PIN 4307/2005 (E–F). (A) Rami of swimming antenna. (B) Articulation of segments of antennal exopod. (C) Reconstruction of antennal rami. (D) Distal segment of exopod. (E,F) Rami of swimming antenna, and their reconstruction. Scale bars: 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435769" httpUri="https://zenodo.org/record/5435769/files/figure.png" pageId="1" pageNumber="270">Fig. 2B</figureCitation>
|
||
), whereas distal segment is relatively long, also having a small distolateral spine (
|
||
<figureCitation id="CA982A158E64FFD08E9EF9B88EA0BE5F" box="[901,1010,1575,1597]" captionStart="Figure 2" captionStartId="3.[162,240,1795,1814]" captionTargetBox="[193,1411,195,1763]" captionTargetId="figure-98@3.[193,1412,195,1763]" captionTargetPageId="3" captionText="Figure 2. Archelatona zherikhini gen. nov., sp. nov., holotype, Khutel Khara, Mongolia, Lower Cretaceous, PIN 3965/ 3332 (A–D), and Sididae indet. from Khotont, Jurassic/Cretaceous boundary, PIN 4307/2005 (E–F). (A) Rami of swimming antenna. (B) Articulation of segments of antennal exopod. (C) Reconstruction of antennal rami. (D) Distal segment of exopod. (E,F) Rami of swimming antenna, and their reconstruction. Scale bars: 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435769" httpUri="https://zenodo.org/record/5435769/files/figure.png" pageId="1" pageNumber="270">Fig. 2C,D</figureCitation>
|
||
). Number of setae of the inner margin of the exopod somewhat variable, ranging from seven to nine on the proximal segment and from 11 to 15 on the distal segment. Endopod seems to be always armed with five setae. Antennal formula (7–9)–(11–15)/(0)– (1)–(4). Each seta of exopod sits on a conspicuous basal prominence. Length of exopod 0.63–0.95 mm. Endopod composed of a short basal segment, a long middle segment with an apical seta, and a short, rounded distal segment bearing a single lateral seta and three apical seta. In some specimens (i.e. 3965/3321), it seems that there is a second seta on the middle segment, but this is probably an artefact because this seta is absent on clear impressions (
|
||
<figureCitation id="CA982A158E61FFD58C79FE9E8C8AB974" box="[354,472,257,279]" captionStart="Figure 1" captionStartId="2.[142,220,1795,1814]" captionTargetBox="[151,1412,198,1762]" captionTargetId="figure-99@2.[151,1413,197,1762]" captionTargetPageId="2" captionText="Figure 1. Archelatona zherikhini gen. nov., sp. nov., paratypes, Khutel Khara, Mongolia, Lower Cretaceous. (A) Whole body, impression PIN 3965/3333. (B) The same fragment, mandibles and thoracic limbs. (C) Filtering setae on thoracic limbs. (D) Rami of swimming antenna, and other impressions on fragment PIN 3965/3333. (E) Rami of swimming antenna, PIN 3965/3334. (F) Rami of swimming antenna, PIN 3965/3332. Scale bars: A, 1000 µm; B–F, 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435765" httpUri="https://zenodo.org/record/5435765/files/figure.png" pageId="4" pageNumber="273">Figs 1D–F</figureCitation>
|
||
,
|
||
<figureCitation id="CA982A158E61FFD58CF9FE9E8F77B975" box="[482,549,257,279]" captionStart="Figure 2" captionStartId="3.[162,240,1795,1814]" captionTargetBox="[193,1411,195,1763]" captionTargetId="figure-98@3.[193,1412,195,1763]" captionTargetPageId="3" captionText="Figure 2. Archelatona zherikhini gen. nov., sp. nov., holotype, Khutel Khara, Mongolia, Lower Cretaceous, PIN 3965/ 3332 (A–D), and Sididae indet. from Khotont, Jurassic/Cretaceous boundary, PIN 4307/2005 (E–F). (A) Rami of swimming antenna. (B) Articulation of segments of antennal exopod. (C) Reconstruction of antennal rami. (D) Distal segment of exopod. (E,F) Rami of swimming antenna, and their reconstruction. Scale bars: 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435769" httpUri="https://zenodo.org/record/5435769/files/figure.png" pageId="4" pageNumber="273">2A–C</figureCitation>
|
||
). All setae of endopod uniform, unspecialized. Mandibles massive, asymmetrical (
|
||
<figureCitation id="CA982A158E61FFD58C19FEA18C3CB936" box="[258,366,318,340]" captionStart="Figure 1" captionStartId="2.[142,220,1795,1814]" captionTargetBox="[151,1412,198,1762]" captionTargetId="figure-99@2.[151,1413,197,1762]" captionTargetPageId="2" captionText="Figure 1. Archelatona zherikhini gen. nov., sp. nov., paratypes, Khutel Khara, Mongolia, Lower Cretaceous. (A) Whole body, impression PIN 3965/3333. (B) The same fragment, mandibles and thoracic limbs. (C) Filtering setae on thoracic limbs. (D) Rami of swimming antenna, and other impressions on fragment PIN 3965/3333. (E) Rami of swimming antenna, PIN 3965/3334. (F) Rami of swimming antenna, PIN 3965/3332. Scale bars: A, 1000 µm; B–F, 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435765" httpUri="https://zenodo.org/record/5435765/files/figure.png" pageId="4" pageNumber="273">Fig. 1A,B</figureCitation>
|
||
). Several thoracic limbs similar, with numerous filtering setae (
|
||
<figureCitation id="CA982A158E61FFD58CF3FEC28F69B911" box="[488,571,349,371]" captionStart="Figure 1" captionStartId="2.[142,220,1795,1814]" captionTargetBox="[151,1412,198,1762]" captionTargetId="figure-99@2.[151,1413,197,1762]" captionTargetPageId="2" captionText="Figure 1. Archelatona zherikhini gen. nov., sp. nov., paratypes, Khutel Khara, Mongolia, Lower Cretaceous. (A) Whole body, impression PIN 3965/3333. (B) The same fragment, mandibles and thoracic limbs. (C) Filtering setae on thoracic limbs. (D) Rami of swimming antenna, and other impressions on fragment PIN 3965/3333. (E) Rami of swimming antenna, PIN 3965/3334. (F) Rami of swimming antenna, PIN 3965/3332. Scale bars: A, 1000 µm; B–F, 100 µm." figureDoi="http://doi.org/10.5281/zenodo.5435765" httpUri="https://zenodo.org/record/5435765/files/figure.png" pageId="4" pageNumber="273">Fig. 1C</figureCitation>
|
||
). The proportion between body length and antennal exopod length in specimen 3965/3306 is about 3: 1, similar to proportions of some Recent ctenopods. Thus, we may conclude that the approximate body size of these cladocerans was about 1.8–3.0 mm.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |