217 lines
23 KiB
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217 lines
23 KiB
XML
<document ID-CLB-Dataset="68943" ID-DOI="http://dx.doi.org/10.3897/zitteliana.96.83571" ID-GBIF-Dataset="f614d115-44b1-41ef-89ce-8651629bceb0" ID-Pensoft-Pub="2747-8106-96-103" ID-Pensoft-UUID="4E0188A4D3D7563C980CB7C5B9424F3C" ID-ZooBank="5B10FFF604074E09B986F931635E9BCC" ModsDocID="2747-8106-96-103" checkinTime="1654860115112" checkinUser="pensoft" docAuthor="Schwarzhans, Werner, Ohe, Fumio, Tsuchiya, Yuki & Ujihara, Atsushi" docDate="2022" docId="C5A34B543AC65AB3B6BB69E8D2C35EFA" docLanguage="en" docName="Zitteliana 96: 103-134" docOrigin="Zitteliana 96" docPubDate="2022-06-10" docSource="http://dx.doi.org/10.3897/zitteliana.96.83571" docTitle="Stenobrachius ohashii Schwarzhans & Ohe & Tsuchiya & Ujihara 2022, sp. nov." docType="treatment" docUuid="B0C99414-2E14-47BC-8DB0-51176BD45B0D" docUuidSource="ZooBank" docVersion="5" id="4E0188A4D3D7563C980CB7C5B9424F3C" lastPageNumber="103" masterDocId="4E0188A4D3D7563C980CB7C5B9424F3C" masterDocTitle="Lanternfish otoliths (Myctophidae, Teleostei) from the Miocene of Japan" masterLastPageNumber="134" masterPageNumber="103" pageNumber="103" updateTime="1732684795358" updateUser="ExternalLinkService">
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<mods:mods id="1FE32A6A368EF6E66FE8BF510573E77D" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="6E51CF0F6DC6B727C64402D2A5EA7803">
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<mods:title id="99E519F81E883AEF03CC8E215874D888">Lanternfish otoliths (Myctophidae, Teleostei) from the Miocene of Japan</mods:title>
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</mods:titleInfo>
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<mods:name id="FAFE9BD38B239EAB3A2A895F79819FBC" type="personal">
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<mods:role id="5B5D7984A17939B95D98B8E7F07C4BB9">
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<mods:roleTerm id="6696A1611C9ACEDA0221C48FA8E19E1E">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="EEBEB459E49805B1D64A1C4B0243B7AD">Schwarzhans, Werner</mods:namePart>
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<mods:affiliation id="160DDE16CCDB68CAFD86F69DD231251E">Zoological Museum, Natural History Museum of Denmark, Universitetsparken 15, 2100 Kobenhavn, Denmark & Ahrensburger Weg 103, 22359 Hamburg, Germany</mods:affiliation>
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<mods:nameIdentifier id="0B684BABD08452079E0B5D424627E0F4" type="email">wwschwarz@aol.com</mods:nameIdentifier>
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</mods:name>
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<mods:name id="0D14AC6993A7E5550EDD7D10CEF7288E" type="personal">
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<mods:role id="D2052CD93F647800143775FB4243E4BB">
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<mods:roleTerm id="4F92A80EC62E8923819DB8A98A105091">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="0E705FB43CC3BDF16A3797128D7C7B51">Ohe, Fumio</mods:namePart>
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<mods:affiliation id="E74467A23BA42ADBC1560E1679183C80">Nara National Research Institute for Cultural Properties, Nara 630 - 8577, Japan</mods:affiliation>
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</mods:name>
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<mods:name id="0C3915CB2C1890DEEE2BF602308533A1" type="personal">
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<mods:role id="BA5E33D7FB021C6B5F25B86A7E417724">
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<mods:roleTerm id="CAB763BDEB0DA1BB9A6D61DE89CFA879">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="A04D252827084882A280665437A33D5C">Tsuchiya, Yuki</mods:namePart>
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<mods:affiliation id="9DAD2D88446D1753C6E3B74E5978F0C8">Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan</mods:affiliation>
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</mods:name>
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<mods:name id="6189510B1D65D5252257DB210104782B" type="personal">
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<mods:roleTerm id="8F7AEFADFE1ADC6C23810C7D2D0A8B1F">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="DA3D48A161F29CEC1097B03F0BD849B4">Ujihara, Atsushi</mods:namePart>
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<mods:affiliation id="6171A32E10140C62B98875FB3AEAD826">Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan</mods:affiliation>
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</mods:name>
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<mods:typeOfResource id="EB89FBFD35CDBDC1CAFC4E9395AAF334">text</mods:typeOfResource>
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<mods:title id="05AE0122F6085B8838C3F2A668F7F4A2">Zitteliana</mods:title>
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<mods:part id="1FCDC534BAF4384D6B4E2A126508E5ED">
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<mods:date id="D4084BFCA08D11669E17AEE73BAD619E">2022</mods:date>
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<mods:detail id="2F474E6CA0B34E76B06B06A611AFAD2A" type="pubDate">
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<mods:number id="6C10759BCF023F0E726324DD77D0D119">2022-06-10</mods:number>
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<mods:detail id="1832E0D4EE1E785DDE4EA45E98E2EAFC" type="volume">
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<mods:number id="B507A9892BCE1458FDCAC246823D28C7">96</mods:number>
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<mods:start id="2C97608D210C4244E4ADD1017BE6FCD5">103</mods:start>
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<mods:end id="8089BEE882E1F70977C24B72BD38C9A9">134</mods:end>
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<mods:url id="A9D90A784193BAD07B9E8E1CF956AF23">http://dx.doi.org/10.3897/zitteliana.96.83571</mods:url>
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<mods:classification id="867039A32F0E340E7C6AE3A5869B11D3">journal article</mods:classification>
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<mods:identifier id="CED7A7F988542E99B6E28E0D29CF828F" type="DOI">http://dx.doi.org/10.3897/zitteliana.96.83571</mods:identifier>
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<mods:identifier id="333064984EA25922D98CFCBE30CC7963" type="Pensoft-Pub">2747-8106-96-103</mods:identifier>
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<treatment id="C5A34B543AC65AB3B6BB69E8D2C35EFA" ID-GBIF-Taxon="195832353" LSID="urn:lsid:zoobank.org:act:B0C99414-2E14-47BC-8DB0-51176BD45B0D" httpUri="http://treatment.plazi.org/id/C5A34B543AC65AB3B6BB69E8D2C35EFA" lastPageNumber="103" pageId="0" pageNumber="103" scope_family="Myctophidae" scope_order="Myctophiformes" scope_phylum="Teleostei">
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<subSubSection id="37EAA56D5D130EE8F530FE6390FA157B" pageId="0" pageNumber="103" type="nomenclature">
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<paragraph id="82C214A60AA7B66EA44652FF36ED146C" pageId="0" pageNumber="103">
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<taxonomicName id="79365BF95FA5278F65954D28950FC2F2" LSID="http://zoobank.org/B0C99414-2E14-47BC-8DB0-51176BD45B0D" authority="Schwarzhans & Ohe & Tsuchiya & Ujihara, 2022" authorityName="Schwarzhans & Ohe & Tsuchiya & Ujihara" authorityYear="2022" family="Myctophidae" genus="Stenobrachius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenobrachius ohashii" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="species" species="ohashii" status="sp. nov.">Stenobrachius ohashii</taxonomicName>
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<taxonomicNameLabel id="2A36753AA367752E0DBCF1E8B31EB8FD" pageId="0" pageNumber="103">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection id="A042BDA05CD3ADC079020C9A67AB96CD" pageId="0" pageNumber="103" type="description">
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<paragraph id="59BC85AB2428FE9C31D1C77DC0885AA4" pageId="0" pageNumber="103">
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<figureCitation id="FF6A67769E7D074B1F7C0DB3AED3E7BF" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. A-J: Lampanyctus lenticularis sp. nov., Tsuyama City, Takakura Formation; B-D: holotype, SMF PO 101.121, level h; A, E-J: paratypes, SMF PO 101.122, levels f, g, h, j; K-M: Lampanyctus profestus Schwarzhans, 2019, SMF PO 101.123, Tsuyama City, Takakura Formation, level MS 36; N-V: Lampanyctus tsuyamaensis sp. nov., Tsuyama City, Takakura Formation; N-P: holotype, SMF PO 101.124, level MS 15; Q-V: paratypes, SMF PO 101.125, levels MS 15, MS 36, MS 90; W-AJ: Stenobrachius ohashii sp. nov.; W-Y: holotype, SMF PO 101.126, Yatsuo machi, Toyama City, Kurosedani Formation, level K 5; Z-AB, AF-AJ: paratypes, SMF PO 101.127, Tsuyama City, Takakura Formation, levels MS 15, MS 70; AC-AD: paratype, SMF PO 101.128, Niimi City, Bihoku Group; AE: paratype, SMF PO 101.129, Fuchu machi, Toyama City, Higashibessho Formation, level H 21; AK-AM: Stenobrachius leucopsarus (Eigenmann & Eigenmann, 1890), Recent, coll. Schwarzhans, leg. Fitch, off California; AN-AO: Stenobrachius nannochir (Gilbert, 1890), Recent, NSMT-P. 63309, 36 ° 28 ' N, 141 ° 10 ' E." figureDoi="10.3897/zitteliana.96.83571.figure7" httpUri="https://binary.pensoft.net/fig/694120" pageId="0" pageNumber="103">Fig. 7W</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="A1850FEBFB6CDABC4C164A64086674E8" pageId="0" pageNumber="103" type="etymology">
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<paragraph id="F91C6337D675FA99CD1F9E3AA5EFC565" pageId="0" pageNumber="103">Etymology.</paragraph>
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<paragraph id="774E00C6C14F94970AE128485C70FEB1" pageId="0" pageNumber="103">Named in honor of Fumitaka Ohashi (Aichi Prefecture, Japan) who collected and donated a large part of the studied otoliths and has undertaken an original thesis on the fossil contents of many of the locations covered in this study.</paragraph>
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</subSubSection>
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<subSubSection id="B462EC958143063070577AB7D77BA30B" pageId="0" pageNumber="103" type="holotype">
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<paragraph id="7A16DA34B1E372F77A7D9E47C4E3E6D2" pageId="0" pageNumber="103">Holotype.</paragraph>
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<paragraph id="73D8FA24C5AA41A3FC352BA0AB65CFF9" pageId="0" pageNumber="103">
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SMF PO 101.126 (Fig.
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<figureCitation id="D6699679937D832145B7647C41FAD4F2" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. A-J: Lampanyctus lenticularis sp. nov., Tsuyama City, Takakura Formation; B-D: holotype, SMF PO 101.121, level h; A, E-J: paratypes, SMF PO 101.122, levels f, g, h, j; K-M: Lampanyctus profestus Schwarzhans, 2019, SMF PO 101.123, Tsuyama City, Takakura Formation, level MS 36; N-V: Lampanyctus tsuyamaensis sp. nov., Tsuyama City, Takakura Formation; N-P: holotype, SMF PO 101.124, level MS 15; Q-V: paratypes, SMF PO 101.125, levels MS 15, MS 36, MS 90; W-AJ: Stenobrachius ohashii sp. nov.; W-Y: holotype, SMF PO 101.126, Yatsuo machi, Toyama City, Kurosedani Formation, level K 5; Z-AB, AF-AJ: paratypes, SMF PO 101.127, Tsuyama City, Takakura Formation, levels MS 15, MS 70; AC-AD: paratype, SMF PO 101.128, Niimi City, Bihoku Group; AE: paratype, SMF PO 101.129, Fuchu machi, Toyama City, Higashibessho Formation, level H 21; AK-AM: Stenobrachius leucopsarus (Eigenmann & Eigenmann, 1890), Recent, coll. Schwarzhans, leg. Fitch, off California; AN-AO: Stenobrachius nannochir (Gilbert, 1890), Recent, NSMT-P. 63309, 36 ° 28 ' N, 141 ° 10 ' E." figureDoi="10.3897/zitteliana.96.83571.figure7" httpUri="https://binary.pensoft.net/fig/694120" pageId="0" pageNumber="103">7W-Y</figureCitation>
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), Kubusu River at Kashio, Toyama City, Toyama Prefecture, Kurosedani FM, level K 5, late Burdigalian, lower part of biozone N8, probably diatom zone 3A.
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</paragraph>
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</subSubSection>
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<subSubSection id="45A3B800B763AD2BE804A6F968B73ABE" pageId="0" pageNumber="103" type="paratypes">
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<paragraph id="9C5A414BCBFD001ABDEBCDB6576703EA" pageId="0" pageNumber="103">Paratypes.</paragraph>
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<paragraph id="FF936962E9796605BD700F713149DCBB" pageId="0" pageNumber="103">6 specimens: 6 specimens: 1 specimen (SMF PO 101.128), near Tesseicho Hattori, Niimi City, Okayama Prefecture, Bihoku Group, late Burdigalian, diatom zone 3A-3B; 4 specimens (SMF PO 101.127), Miya River at Numa, Tsuyama City, Okayama Prefecture, Takakura FM, levels MS 15, MS 70, h, late Burdigalian, diatom zone 3A-3B; 1 specimen (SMF PO 101.129), Osedani, Toyama City, Toyama Prefecture, Higashibessho FM, level H 21, late Burdigalian to early Langhian, diatom zone 3A-4A.</paragraph>
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</subSubSection>
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<subSubSection id="D38D4405E625976BD5C1B956F09C12D6" pageId="0" pageNumber="103" type="materials_examined">
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<paragraph id="BE5311B28BD2D7E0C706AF3D87E35107" pageId="0" pageNumber="103">Additional material.</paragraph>
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<paragraph id="E0D365DF54A0AB8F72AEF56D2A098A17" pageId="0" pageNumber="103">
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<specimenCount id="1A82726BC4BD56CF30A8F66C61F2F5A5" type="generic">227 specimens</specimenCount>
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:
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<specimenCount id="20F696977E45CA3FC4C9FA2A29F3A95C" type="generic">3 specimens</specimenCount>
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,
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<materialsCitation id="C93A900058CF29E3C9827E4BF2CD8A71" collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="Niimi City, Okayama Prefecture, Bihoku Group" location="Near Tesseicho Hattori" specimenCount="1">
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<location id="9527548CDD1DCAB831A82D0CE47884FF" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:9527548CDD1DCAB831A82D0CE47884FF" name="Near Tesseicho Hattori">Near Tesseicho Hattori</location>
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,
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<collectorName id="F6071DA7B823CFADA628D6CE95B71F68">Niimi City</collectorName>
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,
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<collectorName id="62B20B41141860199D31DCCB9CED4332">Okayama Prefecture</collectorName>
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,
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<collectorName id="DBDCB670D534CC96DEFF14F9B503AA36">Bihoku Group</collectorName>
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</materialsCitation>
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;
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<specimenCount id="6C5E17EF2F368A71A976EA555B970729" type="generic">217 specimens</specimenCount>
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,
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<materialsCitation id="06511CB61385263FD42CBCE4B6423DB2" collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="Takakura FM" county="Okayama Prefecture" location="Miya River" municipality="Tsuyama City" specimenCount="1">
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<location id="B8606A642F442C494A6F16C8386AA494" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:B8606A642F442C494A6F16C8386AA494" county="Okayama Prefecture" municipality="Tsuyama City" name="Miya River">Miya River</location>
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at
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<location id="4BD1FDBB96350C1D0C14D557EE6EB04C" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:4BD1FDBB96350C1D0C14D557EE6EB04C" county="Okayama Prefecture" municipality="Tsuyama City" name="Oda">Oda</location>
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and
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<location id="7B63395BD3AE209852C5ABFC720CE7F2" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:7B63395BD3AE209852C5ABFC720CE7F2" county="Okayama Prefecture" municipality="Tsuyama City" name="Numa">Numa</location>
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,
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<collectingMunicipality id="2C9CC6A06B866275B750A40756EE0465">Tsuyama City</collectingMunicipality>
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,
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<collectingCounty id="90F2E18051760DFA11B5D3068205A616">Okayama Prefecture</collectingCounty>
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,
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<collectorName id="D1F84B7FD5B5672DD0F4973857FE6E14">Takakura FM</collectorName>
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, levels MS 04.5, MS 05, MS 05.5, MS 06, MS 15, MS 22, MS 27, MS 36, MS 52, MS 70, MS 80, MS 90, c, d, f9, f10, f40, g, gh, h, j
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</materialsCitation>
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;
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<specimenCount id="163027165F947AD47FFB1D4544AB3AFA" type="generic">3 specimens</specimenCount>
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,
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<materialsCitation id="F707108A986831B2719689ADECB2FA74" collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="Toyama City, Toyama Prefecture, Kurosedani FM" location="Kubusu River" municipality="Kashio" specimenCount="1">
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<location id="E980685EAB665EAD5AC7A13296338A26" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:E980685EAB665EAD5AC7A13296338A26" municipality="Kashio" name="Kubusu River">Kubusu River</location>
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at
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<collectingMunicipality id="095847C475BBBB5F283DA2414C220416">Kashio</collectingMunicipality>
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,
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<collectorName id="E1875378BE768ABFCBE39E49D82273FC">Toyama City</collectorName>
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,
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<collectorName id="D1DFC78686A75211063D220FC06945AD">Toyama Prefecture</collectorName>
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,
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<collectorName id="A77566A04F437DA8217AF11408D79C8D">Kurosedani FM</collectorName>
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, level K 5
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</materialsCitation>
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;
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<specimenCount id="40B11E0A2FC1CB97E715671C28BBF21D" type="generic">4 specimens</specimenCount>
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,
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<materialsCitation id="706D1DDDE547CD8F7BC4FAC9A44AD8DC" collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="Toyama Prefecture, Higashibessho FM" location="Osedani" specimenCount="1">
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<location id="DFD616F6490403EC26E76E59D3AC1A87" LSID="urn:lsid:plazi:treatment:C5A34B543AC65AB3B6BB69E8D2C35EFA:DFD616F6490403EC26E76E59D3AC1A87" name="Osedani">Osedani</location>
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, Toyama City,
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<collectorName id="392D9860B44E17D3ECFEAC6FC53F902D">Toyama Prefecture</collectorName>
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,
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<collectorName id="E41E0C2EF317BC896DA9ABBDC66A25A4">Higashibessho FM</collectorName>
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, level H 21
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="D4B2CE2048F87C819C09A7BEE5D437C0" pageId="0" pageNumber="103" type="diagnosis">
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<paragraph id="CA59892647BF44FF7256AA21244CD530" pageId="0" pageNumber="103">Diagnosis.</paragraph>
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<paragraph id="57F708C7590CFA7D86940EE724FF46B8" pageId="0" pageNumber="103">OL:OH = 1.0-1.15. Rostrum long, massive, with more or less rounded tip, 17-25% of OL. Excisura and antirostrum distinct. Ostium slightly longer than cauda, OCL:CCL = 1.2-1.7. Caudal pseudocolliculum distinct, as long as caudal colliculum or longer. Inner face flat; outer face convex, smooth.</paragraph>
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</subSubSection>
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<subSubSection id="276A6E84AAE8A2E200B9A7574657B286" pageId="0" pageNumber="103" type="description">
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<paragraph id="B654EE477EEEB420011B7365C358288E" pageId="0" pageNumber="103">Description.</paragraph>
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<paragraph id="C8CA073A9EBC9C681C3AAD9E93895A0A" pageId="0" pageNumber="103">A small, roundish, and moderately thick otolith reaching about 2.1 mm in length (holotype); OH:OT = 3.5-4.0. Ventral rim deeply curving, deepest at or anterior of its middle. Dorsal rim relatively shallow, somewhat irregular with distinct postdorsal angle near junction with posterior rim. Anterior rim with long, massive rostrum with usually rounded tip, 17-25% of OL. Antirostrum distinct, about half the length of rostrum. Excisura deep, usually sharp. Posterior rim variably rounded. All rims smooth.</paragraph>
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<paragraph id="0465CEF3E49F1777C832009344DA8B26" pageId="0" pageNumber="103">Inner face completely flat, with moderately long, relatively narrow, straight, shallow and nearly axial positioned sulcus. Ostial colliculum shallow, slightly longer and wider than caudal colliculum (OCL:CCL = 1.2-1.7). Ventral margin of ostial colliculum sometimes flexed anteriorly. Caudal pseudocolliculum distinct, as long as caudal colliculum or anteriorly projecting. Ventral furrow distinct, positioned moderately far from ventral rim of otolith. Dorsal depression wide, occupying almost entire dorsal field, but with indistinct margins. Outer face distinctly convex, smooth.</paragraph>
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</subSubSection>
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<subSubSection id="66A01F6C04EC43C164780B62FABEDBC5" pageId="0" pageNumber="103" type="discussion">
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<paragraph id="EEC954710BD540783DBABB2638EAFE83" pageId="0" pageNumber="103">Discussion.</paragraph>
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<paragraph id="E0F66970F2CC7BB890FB275DC34C7744" pageId="0" pageNumber="103">
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The genus
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<taxonomicName id="DFCD33161F8C70FD2CB3D1537CF9ECEC" authorityName="C.H.Eigenmann & R.S.Eigenmann" authorityYear="1890" family="Myctophidae" genus="Stenobrachius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenobrachius" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="genus">
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<emphasis id="7CC5B4F147BABE531A4D8FA7A839850C" italics="true" pageId="0" pageNumber="103">Stenobrachius</emphasis>
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</taxonomicName>
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is today known from two species in the North Pacific:
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<taxonomicName id="558647FAE4AE936011D4DAE150079470" lsidName="S. leucopsarus" pageId="0" pageNumber="103" rank="species" species="leucopsarus">
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<emphasis id="DFC44E01A32F2803734C720B17E90A34" italics="true" pageId="0" pageNumber="103">S. leucopsarus</emphasis>
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</taxonomicName>
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Eigenmann & Eigenmann, 1890 (Fig. 7AK-AM) and
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<taxonomicName id="975A102DE981E07F38D107EE5E76AD7E" lsidName="S. nannochir" pageId="0" pageNumber="103" rank="species" species="nannochir">
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<emphasis id="E8A9B05B89FBCFE5A85B7AC5A301E04A" italics="true" pageId="0" pageNumber="103">S. nannochir</emphasis>
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</taxonomicName>
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(Gilbert, 1890) (Fig. 7AN-AO). The fossil
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<taxonomicName id="5D2F700EDF72AEE3520667F7D5340C70" lsidName="S. ohashii" pageId="0" pageNumber="103" rank="species" species="ohashii">
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<emphasis id="765E54578C6477046A306D692E6898B2" italics="true" pageId="0" pageNumber="103">S. ohashii</emphasis>
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</taxonomicName>
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differs from the otoliths of the extant
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<taxonomicName id="F72C24EBC784E9D271834D38B08A826F" lsidName="S. leucopsarus" pageId="0" pageNumber="103" rank="species" species="leucopsarus">
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<emphasis id="409FB268180ACA928F03F1EB040EFEF5" italics="true" pageId="0" pageNumber="103">S. leucopsarus</emphasis>
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</taxonomicName>
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in the more regularly rounded ventral and posterior rims, the deeper excisura and sharper antirostrum, and the comparatively longer ostium (OCL:CCL = 1.2-1.7 vs. 1.05-1.3). It differs from the second extant species,
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<taxonomicName id="12A8E85A440B0A686A44118EDF8FDB74" lsidName="S. nannochir" pageId="0" pageNumber="103" rank="species" species="nannochir">
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<emphasis id="86E0E4D10D435ECC85997AA3F2ED5E9D" italics="true" pageId="0" pageNumber="103">S. nannochir</emphasis>
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</taxonomicName>
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, in the longer rostrum (vs. rostrum about as long as antirostrum) and the presence of a more or less strongly developed postdorsal angle.
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<taxonomicName id="6724B2A04F34CC5910C7CE0A994DDD28" authorityName="C.H.Eigenmann & R.S.Eigenmann" authorityYear="1890" family="Myctophidae" genus="Stenobrachius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenobrachius" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="genus">
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<emphasis id="400B15D49661D581869B23A310EF4FD4" italics="true" pageId="0" pageNumber="103">Stenobrachius</emphasis>
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</taxonomicName>
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otoliths are also quite similar to certain
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<taxonomicName id="AF37EEE46C006D907AF2A306B9DB7D09" authorityName="Bonaparte in Bonaparte" authorityYear="1840" family="Myctophidae" genus="Lampanyctus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lampanyctus" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="genus">
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<emphasis id="F24524CCFC8240C66785B65F5B50F45D" italics="true" pageId="0" pageNumber="103">Lampanyctus</emphasis>
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</taxonomicName>
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otoliths such as those of the extant
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<taxonomicName id="A12988C1F9A3A5F082CC43A00EF016BC" lsidName="L. lepidolychnus" pageId="0" pageNumber="103" rank="species" species="lepidolychnus">
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<emphasis id="274C73531E4D1243F2ADCDED32FF3783" italics="true" pageId="0" pageNumber="103">L. lepidolychnus</emphasis>
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</taxonomicName>
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or the fossil
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<taxonomicName id="AD14B6E876DF200034474F8E913FDB20" lsidName="L. tsuyamaensis" pageId="0" pageNumber="103" rank="species" species="tsuyamaensis">
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<emphasis id="7F38B827CD0D5D99BDFF571B31842801" italics="true" pageId="0" pageNumber="103">L. tsuyamaensis</emphasis>
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</taxonomicName>
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described above. A consistent difference seems to be that the caudal pseudocolliculum is not reduced in length or expression in
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<taxonomicName id="B27CC5B13A0AA025946FF48009788449" authorityName="C.H.Eigenmann & R.S.Eigenmann" authorityYear="1890" family="Myctophidae" genus="Stenobrachius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenobrachius" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="genus">
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<emphasis id="390D13606183275F0471CBDBEAD13BC7" italics="true" pageId="0" pageNumber="103">Stenobrachius</emphasis>
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</taxonomicName>
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as it is in most
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<taxonomicName id="06EF48BACCBE8541A1FE3A616E51777A" authorityName="Bonaparte in Bonaparte" authorityYear="1840" family="Myctophidae" genus="Lampanyctus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lampanyctus" order="Myctophiformes" pageId="0" pageNumber="103" phylum="Chordata" rank="genus">
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<emphasis id="27BD7559CE6E64F6B921C70033C904F3" italics="true" pageId="0" pageNumber="103">Lampanyctus</emphasis>
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</taxonomicName>
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species.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |