133 lines
13 KiB
XML
133 lines
13 KiB
XML
<document id="D2BF044664CEEDA05A18657007FEA8E6" ID="10.11646/zootaxa.4139.3.2" ID-DOI="10.11646/zootaxa.4139.3.2" ID-GBIF-Dataset="51358935-98b0-4d89-a47f-e4341171e5b9" ID-ISSN="1175-5326" ID-Zenodo-Dep="262765" ID-ZooBank="DCF4220B-4A73-407C-837C-54DEAE29F435" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1469091585085" checkinUser="plazi" docAuthor="Last, Peter R., Naylor, Gavin J. P. & Manjaji-Matsumoto, B. Mabel" docDate="2016" docId="03A7CA1D8561145BE7C6FDCBFCA4024C" docLanguage="en" docName="zootaxa.4139.3.2.pdf" docOrigin="Zootaxa 4139 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Megatrygon Last, Naylor & Manjaji-Matsumoto, 2016, gen. nov." docType="treatment" docVersion="9" lastPageNumber="356" masterDocId="FF9EB265856A1450E751FF83FFDE0766" masterDocTitle="A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights" masterLastPageNumber="368" masterPageNumber="345" pageNumber="356" updateTime="1698365466156" updateUser="plazi">
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<mods:mods id="5E02CDDC8214AB121250CEBD91671F32" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="DABF04C3ED7D1FFE55AB1DA60F4504DD">
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<mods:title id="624C04A44E07D2F207A446E98E2AC3FD">A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights</mods:title>
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<mods:namePart id="293AB899269EFF73A866327706D0D0C4">Last, Peter R.</mods:namePart>
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<mods:roleTerm id="A99A87870D2D56826FEEF7F0751C20A4">Author</mods:roleTerm>
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<mods:namePart id="6A2159093D4EC194B8E54DF55EB8EE5B">Naylor, Gavin J. P.</mods:namePart>
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<mods:name id="E70C515402CE51699155D18B69A3974A" type="personal">
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<mods:roleTerm id="B82B6C3D0CC75B35E935CEEF2ECC9DA0">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="85F913A19FFE155040562CD68FEA3C4D">Manjaji-Matsumoto, B. Mabel</mods:namePart>
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<mods:typeOfResource id="29BD8B77AFC6C5324B576FAB5B8C7342">text</mods:typeOfResource>
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<mods:title id="F9D80B28750F0A43B7E9480EB2D09B09">Zootaxa</mods:title>
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<mods:part id="C7A98E1CD72441E733A0B548FA17299C">
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<mods:date id="E319C3F8C4347B35610C38C3FC0E1C9D">2016</mods:date>
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<mods:detail id="EBC58ADBA56F7DDA412AC702C6F05050" type="volume">
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<mods:number id="532970346B2CD8AEC8A6AFE9609FCF03">4139</mods:number>
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<mods:classification id="A7F450A20C0835EF94AAFE6AF1AA7DCE">journal article</mods:classification>
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<mods:identifier id="4138110CCBC3CA3E8E643157FB4C8C48" type="DOI">10.11646/zootaxa.4139.3.2</mods:identifier>
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<mods:identifier id="37D95954464E557C64B73E93AFCE1A13" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="13EB4A45EF39143E4BB83C58346BB1DC" type="Zenodo-Dep">262765</mods:identifier>
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<treatment id="03A7CA1D8561145BE7C6FDCBFCA4024C" ID-DOI="http://doi.org/10.5281/zenodo.6085211" ID-GBIF-Taxon="123198581" ID-Zenodo-Dep="6085211" LSID="urn:lsid:plazi:treatment:03A7CA1D8561145BE7C6FDCBFCA4024C" httpUri="http://treatment.plazi.org/id/03A7CA1D8561145BE7C6FDCBFCA4024C" lastPageNumber="356" pageId="11" pageNumber="356">
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<subSubSection id="C31428808561145BE7C6FDCBFE280504" box="[151,502,584,610]" pageId="11" pageNumber="356" type="nomenclature">
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<paragraph id="8BB17B0B8561145BE7C6FDCBFE280504" blockId="11.[151,502,584,610]" box="[151,502,584,610]" pageId="11" pageNumber="356">
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<heading id="D0F9CC678561145BE7C6FDCBFE280504" bold="true" box="[151,502,584,610]" fontSize="11" level="1" pageId="11" pageNumber="356" reason="1">
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<emphasis id="B97AA7198561145BE7C6FDCBFE280504" bold="true" box="[151,502,584,610]" pageId="11" pageNumber="356">
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Genus
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<taxonomicName id="4C0E00888561145BE7BCFDCBFE5E0504" ID-CoL="5N4T" box="[237,384,584,610]" class="Elasmobranchii" family="Dasyatidae" genus="Megatrygon" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="genus" status="gen. nov.">
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<emphasis id="B97AA7198561145BE7BCFDCBFE5E0504" bold="true" box="[237,384,584,610]" italics="true" pageId="11" pageNumber="356">Megatrygon</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A2491A628561145BE6D9FDCBFE280504" box="[392,502,584,610]" pageId="11" pageNumber="356" 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 id="C31428808561145BE7C6FD0CFB7F036C" pageId="11" pageNumber="356" type="materials_examined">
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<paragraph id="8BB17B0B8561145BE7C6FD0CFC1205C2" blockId="11.[151,972,654,677]" box="[151,972,654,677]" pageId="11" pageNumber="356">
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<typeStatus id="54B5C5A98561145BE7C6FD0CFF1705C2" box="[151,201,655,676]" pageId="11" pageNumber="356">Type</typeStatus>
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species
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<taxonomicName id="4C0E00888561145BE64EFD13FD7F05C2" authority="Annandale, 1908:393" authorityName="Annandale" authorityPageNumber="393" authorityYear="1908" box="[287,673,654,677]" class="Elasmobranchii" family="Dasyatidae" genus="Trygon" higherTaxonomySource="CoL" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="species" species="microps">
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<emphasis id="B97AA7198561145BE64EFD13FE6005C3" box="[287,446,656,677]" italics="true" pageId="11" pageNumber="356">Trygon microps</emphasis>
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Annandale, 1908:393
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</taxonomicName>
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; newly proposed, monotypic.
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</paragraph>
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<paragraph id="8BB17B0B8561145BE7C6FD52FB7F036C" blockId="11.[151,1437,721,1322]" pageId="11" pageNumber="356">
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<emphasis id="B97AA7198561145BE7C6FD52FED1058C" bold="true" box="[151,271,721,746]" pageId="11" pageNumber="356">Definition</emphasis>
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. Very large dasyatid (adults to
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<quantity id="4CF6D6EE8561145BE53CFD51FD1E058F" box="[621,704,722,746]" metricMagnitude="0" metricUnit="m" metricValue="2.2" pageId="11" pageNumber="356" unit="cm" value="220.0">220 cm</quantity>
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DW) characterised by the following: very robust, broad rhombic disc with pectoral-fin apex angular; snout broadly angular (~3 times combined orbit and spiracle length); eye very small and sunken; nasal curtain skirt shaped; mouth narrow, with 5 oral papillae; tail short (length subequal to DW), very broad-based and depressed anteriorly, very strongly tapered at caudal sting then becoming filamentous; pelvic fins large, protruding greatly beyond disc; dorsal fold forming a low ridge; ventral fold low with a very short base; caudal sting posterior on tail (distance from pectoral-fin insertion to caudal-sting base more than 3 times interspiracular width); skin densely covered with minute stellate denticles but denticle band absent; no median rows of thorns and scapular thorns absent; tail base and sides covered with thorny denticles; dorsal colour plain; ventral surface white, disc margin dark; tail plain, black distally; marine, Indo–
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<collectingRegion id="49CAB5E98561145BE35AFC72FB9A036C" box="[1035,1092,1009,1034]" country="Tanzania" name="Mjini Magharibi" pageId="11" pageNumber="356">West</collectingRegion>
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Pacific.
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</paragraph>
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</subSubSection>
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<subSubSection id="C31428808561145BE796FB96FD550310" pageId="11" pageNumber="356" type="etymology">
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<paragraph id="8BB17B0B8561145BE796FB96FD580334" blockId="11.[151,1437,721,1322]" pageId="11" pageNumber="356">
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<emphasis id="B97AA7198561145BE796FB96FE98034B" bold="true" box="[199,326,1045,1069]" pageId="11" pageNumber="356">Etymology</emphasis>
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. Combination of the Greek
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<emphasis id="B97AA7198561145BE52FFB95FD1B034B" box="[638,709,1046,1069]" italics="true" pageId="11" pageNumber="356">mégas</emphasis>
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(great, large, mighty) and Greek
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<taxonomicName id="4C0E00888561145BE369FB95FB5F034B" box="[1080,1153,1046,1069]" class="Elasmobranchii" family="Dasyatidae" genus="Trygon" higherTaxonomySource="CoL" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="362" phylum="Chordata" rank="genus">
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<emphasis id="B97AA7198561145BE369FB95FB5F034B" box="[1080,1153,1046,1069]" italics="true" pageId="11" pageNumber="356">trygon</emphasis>
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</taxonomicName>
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(stingray) with reference to the massive bulk of this gigantic stingray.
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</paragraph>
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<paragraph id="8BB17B0B8561145BE796FBDFFD550310" blockId="11.[151,1437,721,1322]" box="[199,651,1116,1142]" pageId="11" pageNumber="356">
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<emphasis id="B97AA7198561145BE796FBDFFEC00313" bold="true" box="[199,286,1116,1141]" pageId="11" pageNumber="356">Species</emphasis>
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.
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<taxonomicName id="4C0E00888561145BE67DFBDDFD580310" authority="Annandale, 1908" authorityName="Annandale" authorityYear="1908" box="[300,646,1117,1142]" class="Elasmobranchii" family="Dasyatidae" genus="Trygon" higherTaxonomySource="CoL" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="species" species="microps">
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<emphasis id="B97AA7198561145BE67DFBDDFE740313" box="[300,426,1118,1141]" italics="true" pageId="11" pageNumber="356">M. microps</emphasis>
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(Annandale, 1908)
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C31428808561145BE796FB02FCA4024C" pageId="11" pageNumber="356" type="discussion">
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<paragraph id="8BB17B0B8561145BE796FB02FCA4024C" blockId="11.[151,1437,721,1322]" pageId="11" pageNumber="356">
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<emphasis id="B97AA7198561145BE796FB02FEEA03FF" bold="true" box="[199,308,1153,1177]" pageId="11" pageNumber="356">Remarks</emphasis>
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. Newly erected, monotypic genus and formerly assigned to
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<taxonomicName id="4C0E00888561145BE486FB01FBE703FF" box="[983,1081,1154,1177]" class="Elasmobranchii" family="Dasyatidae" genus="Dasyatis" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="genus">
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<emphasis id="B97AA7198561145BE486FB01FBE703FF" box="[983,1081,1154,1177]" italics="true" pageId="11" pageNumber="356">Dasyatis</emphasis>
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</taxonomicName>
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. The placement of
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<taxonomicName id="4C0E00888561145BE242FB01FF2E03DB" class="Elasmobranchii" family="Dasyatidae" genus="Megatrygon" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="species" species="microps">
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<emphasis id="B97AA7198561145BE242FB01FF2E03DB" italics="true" pageId="11" pageNumber="356">Megatrygon microps</emphasis>
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</taxonomicName>
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in the family
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<taxonomicName id="4C0E00888561145BE6C3FB26FDD103D8" box="[402,527,1189,1214]" class="Elasmobranchii" family="Dasyatidae" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="family">Dasyatidae</taxonomicName>
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is provisional as molecular data (see also Naylor
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<emphasis id="B97AA7198561145BE317FB25FBA603D8" box="[1094,1144,1189,1214]" italics="true" pageId="11" pageNumber="356">et al</emphasis>
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., in press) suggest that it, along with the ‘amphi-American
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<taxonomicName id="4C0E00888561145BE54CFB49FD460387" box="[541,664,1226,1249]" class="Elasmobranchii" family="Dasyatidae" genus="Himantura" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="genus">
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<emphasis id="B97AA7198561145BE54CFB49FD460387" box="[541,664,1226,1249]" italics="true" pageId="11" pageNumber="356">Himantura</emphasis>
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</taxonomicName>
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’, are more closely related to the freshwater Neotropical stingrays (
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<taxonomicName id="4C0E00888561145BE7CFFB6EFEB10260" box="[158,367,1261,1286]" class="Elasmobranchii" family="Potamotrygonidae" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="family">Potamotrygonidae</taxonomicName>
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) of
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<collectingRegion id="49CAB5E98561145BE6CFFB6EFE010260" box="[414,479,1261,1286]" country="Tanzania" name="Kusini Unguja" pageId="11" pageNumber="356">South</collectingRegion>
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America. Further investigations are needed to determine the position of this species in the order
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<taxonomicName id="4C0E00888561145BE64EFA92FE00024C" box="[287,478,1297,1322]" class="Elasmobranchii" kingdom="Animalia" order="Myliobatiformes" pageId="11" pageNumber="356" phylum="Chordata" rank="order">Myliobatiformes</taxonomicName>
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, but it may belong in its own family.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |