245 lines
30 KiB
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245 lines
30 KiB
XML
<document id="A5B5B1E15110E5C442D4FBA25348E427" ID-DOI="10.1080/14772019.2016.1151958" ID-ISSN="1478-0941" ID-PMC="PMC5221741" ID-PubMed="28077930" ID-Zenodo-Dep="10883098" ID-ZooBank="A30E5364-0003-4467-B902-43A41AD456CC" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1711483431746" checkinUser="felipe" docAuthor="Schwarzhans, Werner, Mors, Thomas, Engelbrecht, Andrea, Reguero, Marcelo & Kriwet, Jurgen" docDate="2017" docId="041B87CAFFA3FFF8D67AF8E2E2B8D935" docLanguage="en" docName="JSystPalaeontol.15.2.147-170.pdf" docOrigin="Journal of Systematic Palaeontology 15 (2)" docSource="http://dx.doi.org/10.1080/14772019.2016.1151958" docStyle="DocumentStyle:602474738E3D100F0F13788B53F61545.2:JSystPalaeontol.2016-.journal_article.open" docStyleId="602474738E3D100F0F13788B53F61545" docStyleName="JSystPalaeontol.2016-.journal_article.open" docStyleVersion="2" docTitle="Diaphus Eigenmann & Eigenmann 1890" docType="treatment" docVersion="2" lastPageNumber="154" masterDocId="F822FFB2FFA4FFF0D753FFE4E35DDA07" masterDocTitle="Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)" masterLastPageNumber="170" masterPageNumber="147" pageNumber="153" updateTime="1711483851815" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="C5BBA607952B6664CCD1E0CECD6BE38C">Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)</mods:title>
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<mods:namePart id="811C9E1AF85167A92EF30031880EF822">Schwarzhans, Werner</mods:namePart>
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<mods:affiliation id="213E2F62DCC33BDBC50776C7BF1FA137">Ahrensburger Weg 103, D- 22359 Hamburg, Germany; & Natural History Museum of Denmark, Zoological Museum, Universitetsparken 15, DK- 2100 Copenhagen, Denmark;</mods:affiliation>
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<mods:namePart id="6238DCF3D7FD616FB2AB389B6A01EC54">Mors, Thomas</mods:namePart>
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<mods:affiliation id="EAC6FAF3D39BB6D30183F9C7739CDA3D">Swedish Museum of Natural History, Department of Palaeobiology, P. O. Box 5007, SE- 10405 Stockholm, Sweden;</mods:affiliation>
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<mods:namePart id="A9E01FDEEA2035270F912FCA7FE868D1">Engelbrecht, Andrea</mods:namePart>
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<mods:affiliation id="520F3557146BCF196558C9B482CBF3E2">University of Vienna, Department of Palaeontology, Althanstrasse 14, 1090 Vienna, Austria;</mods:affiliation>
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<mods:namePart id="4A95CA56508D675639DA695B78034CBB">Reguero, Marcelo</mods:namePart>
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<mods:affiliation id="69335DF68982D24ABF9D715BD984F798">Museo de La Plata, Division ́ Paleontolog ́ ıa de Vertebrados, Paseo del Bosque s / n, B 1900 FWA La Plata, Argentina</mods:affiliation>
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<mods:namePart id="F731B3EC1C9114F7429F2841FD762FF1">Kriwet, Jurgen</mods:namePart>
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<mods:affiliation id="3C62368CA942834052C6CDF32223CC91">University of Vienna, Department of Palaeontology, Althanstrasse 14, 1090 Vienna, Austria;</mods:affiliation>
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<mods:typeOfResource id="E9D944B48E8525D3EE31899BD67909D6">text</mods:typeOfResource>
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<mods:title id="781300852B61B8F8FA7F6A4C04BB699B">Journal of Systematic Palaeontology</mods:title>
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<mods:part id="C901EA1CA89178DFF9C57003AF9069AB">
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<mods:date id="68AAAA97150F3F40CB1096F145860D9D">2017</mods:date>
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<mods:number id="FFC413A1D699DFE1BE38DCFECD345D98">2016-03-16</mods:number>
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<mods:identifier id="682F5272E27350BBCCF68F6A6F91F3E9" type="DOI">10.1080/14772019.2016.1151958</mods:identifier>
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<mods:identifier id="B874C4AC80566F76E52167EE7C8F787A" type="ISSN">1478-0941</mods:identifier>
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<treatment id="041B87CAFFA3FFF8D67AF8E2E2B8D935" LSID="urn:lsid:plazi:treatment:041B87CAFFA3FFF8D67AF8E2E2B8D935" httpUri="http://treatment.plazi.org/id/041B87CAFFA3FFF8D67AF8E2E2B8D935" lastPageId="8" lastPageNumber="154" pageId="7" pageNumber="153">
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<subSubSection id="C4A86557FFA3FFF7D67AF8E2E1D8DD1A" box="[297,645,1798,1821]" pageId="7" pageNumber="153" type="nomenclature">
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<paragraph id="8C0D36DCFFA3FFF7D67AF8E2E1D8DD1A" blockId="7.[212,728,1702,1853]" box="[297,645,1798,1821]" pageId="7" pageNumber="153">
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<heading id="D74581B0FFA3FFF7D67AF8E2E1D8DD1A" box="[297,645,1798,1821]" centered="true" fontSize="10" level="2" pageId="7" pageNumber="153" reason="8">
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<emphasis id="BEC6EACEFFA3FFF7D67AF8E2E177DD1A" bold="true" box="[297,554,1798,1821]" pageId="7" pageNumber="153">
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<taxonomicName id="4BB24D5FFFA3FFF7D67AF8E2E2DBDD1A" ID-CoL="62PDG" ID-ENA="88678" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[297,390,1798,1821]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="7" pageNumber="153" phylum="Chordata" rank="genus">
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<emphasis id="BEC6EACEFFA3FFF7D67AF8E2E2DBDD1A" bold="true" box="[297,390,1798,1821]" italics="true" pageId="7" pageNumber="153">Diaphus</emphasis>
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||
</taxonomicName>
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||
?
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<emphasis id="BEC6EACEFFA3FFF7D6CAF8E2E177DD1A" bold="true" box="[409,554,1798,1821]" italics="true" pageId="7" pageNumber="153">marambionis</emphasis>
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</emphasis>
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sp. nov.
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C4A86557FFA3FFF7D63CF8C2E163DD3A" box="[367,574,1830,1853]" pageId="7" pageNumber="153" type="description">
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<paragraph id="8C0D36DCFFA3FFF7D63CF8C2E163DD3A" blockId="7.[212,728,1702,1853]" box="[367,574,1830,1853]" pageId="7" pageNumber="153">
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(
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<figureCitation id="14892A59FFA3FFF7D62BF8C2E2B1DD3A" box="[376,492,1830,1853]" captionStart="Figure 3" captionStartId="5.[159,227,1426,1447]" captionTargetBox="[175,1452,183,1394]" captionTargetId="figure-187@5.[175,1452,183,1394]" captionTargetPageId="5" captionText="Figure 3. Drawings of Eocene otoliths from Seymour Island. A—C, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged; A, outer face; B, ventral view; C, inner face. D—I, Diaphus? marambionis sp. nov.; D—F, holotype, NRM-PZ P.15966; D, anterior view, E, inner face, F, ventral view; G—I, (mirror imaged) paratypes, NRM-PZ P.15967; G, inner face; H, ventral view; I, inner face. J, K, Paraulopus sp., NRM-PZ P.15965, mirror imaged; J, inner face; K, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10883108" httpUri="https://zenodo.org/record/10883108/files/figure.png" pageId="7" pageNumber="153">Figs 3D—I</figureCitation>
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,
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<figureCitation id="14892A59FFA3FFF7D6A4F8C2E16BDD3A" box="[503,566,1830,1853]" captionStart="Figure 6" captionStartId="15.[159,227,1815,1836]" captionTargetBox="[216,1409,183,1783]" captionTargetId="figure-1@15.[216,1410,183,1783]" captionTargetPageId="15" captionText="Figure 6. Eocene otoliths from Seymour Island. A, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged, inner face. B, C, Diaphus? marambionis sp. nov., holotype, NRM-PZ P.15966; B, inner face; C, ventral view. D—F, Macruronus eastmani sp. nov., holotype, NRM-PZ P.15970, mirror imaged; D, inner face; E, ventral view; F, outer face. G—I, Palimphemus seymourensis sp. nov., holotype, NRM-PZ P.15973, mirror imaged; G, inner face; H, ventral view; I, outer face. J—L, Coelorinchus nordenskjoeldi sp. nov., holotype, NRM-PZ P.15978; J, inner face; K, ventral view; L, outer face. M, N, Coelorinchus balushkini sp. nov., holotype, NRM-PZ P.15976; M, inner face; N, ventral view. O, P, Hoplobrotula? antipoda sp. nov., holotype, NRM-PZ P.15984, mirror imaged; O, inner face; P, ventral view. Q, Notoberyx cionei gen. nov., sp. nov.; holotype, NRM-PZ P.15987, inner face. R, Cepola anderssoni sp. nov., holotype, NRM-PZ P.15996, mirror imaged, inner face." figureDoi="http://doi.org/10.5281/zenodo.10883114" httpUri="https://zenodo.org/record/10883114/files/figure.png" pageId="7" pageNumber="153">6B, C</figureCitation>
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)
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</paragraph>
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||
</subSubSection>
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<subSubSection id="C4A86557FFA3FFF7D7CCF8B3E62BDB60" pageId="7" pageNumber="153" type="materials_examined">
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<paragraph id="8C0D36DCFFA3FFF7D7CCF8B3E050DD89" blockId="7.[159,781,1879,1934]" pageId="7" pageNumber="153">
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<emphasis id="BEC6EACEFFA3FFF7D7CCF8B3E257DD69" bold="true" box="[159,266,1879,1902]" pageId="7" pageNumber="153">Material.</emphasis>
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<typeStatus id="5309887EFFA3FFF7D64BF8B3E2DDDD69" box="[280,384,1879,1902]" pageId="7" pageNumber="153" type="holotype">Holotype</typeStatus>
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: NRM-PZ P.15966 (
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<figureCitation id="14892A59FFA3FFF7D533F8B3E186DD69" box="[608,731,1879,1902]" captionStart="Figure 3" captionStartId="5.[159,227,1426,1447]" captionTargetBox="[175,1452,183,1394]" captionTargetId="figure-187@5.[175,1452,183,1394]" captionTargetPageId="5" captionText="Figure 3. Drawings of Eocene otoliths from Seymour Island. A—C, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged; A, outer face; B, ventral view; C, inner face. D—I, Diaphus? marambionis sp. nov.; D—F, holotype, NRM-PZ P.15966; D, anterior view, E, inner face, F, ventral view; G—I, (mirror imaged) paratypes, NRM-PZ P.15967; G, inner face; H, ventral view; I, inner face. J, K, Paraulopus sp., NRM-PZ P.15965, mirror imaged; J, inner face; K, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10883108" httpUri="https://zenodo.org/record/10883108/files/figure.png" pageId="7" pageNumber="153">Figs 3D—F</figureCitation>
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,
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<figureCitation id="14892A59FFA3FFF7D5B4F8B3E3E9DD89" captionStart="Figure 6" captionStartId="15.[159,227,1815,1836]" captionTargetBox="[216,1409,183,1783]" captionTargetId="figure-1@15.[216,1410,183,1783]" captionTargetPageId="15" captionText="Figure 6. Eocene otoliths from Seymour Island. A, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged, inner face. B, C, Diaphus? marambionis sp. nov., holotype, NRM-PZ P.15966; B, inner face; C, ventral view. D—F, Macruronus eastmani sp. nov., holotype, NRM-PZ P.15970, mirror imaged; D, inner face; E, ventral view; F, outer face. G—I, Palimphemus seymourensis sp. nov., holotype, NRM-PZ P.15973, mirror imaged; G, inner face; H, ventral view; I, outer face. J—L, Coelorinchus nordenskjoeldi sp. nov., holotype, NRM-PZ P.15978; J, inner face; K, ventral view; L, outer face. M, N, Coelorinchus balushkini sp. nov., holotype, NRM-PZ P.15976; M, inner face; N, ventral view. O, P, Hoplobrotula? antipoda sp. nov., holotype, NRM-PZ P.15984, mirror imaged; O, inner face; P, ventral view. Q, Notoberyx cionei gen. nov., sp. nov.; holotype, NRM-PZ P.15987, inner face. R, Cepola anderssoni sp. nov., holotype, NRM-PZ P.15996, mirror imaged, inner face." figureDoi="http://doi.org/10.5281/zenodo.10883114" httpUri="https://zenodo.org/record/10883114/files/figure.png" pageId="7" pageNumber="153">6B, C</figureCitation>
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).
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<typeStatus id="5309887EFFA3FFF7D78FF893E215DD89" box="[220,328,1911,1934]" pageId="7" pageNumber="153" type="paratype">Paratypes</typeStatus>
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:
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<specimenCount id="9AB4FD55FFA3FFF7D634F893E144DD89" box="[359,537,1911,1934]" count="2" pageId="7" pageNumber="153" type="generic">two specimens</specimenCount>
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NRM-PZ P.15967
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</paragraph>
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<paragraph id="8C0D36DCFFA3FFF7D41EFF59E74ADAF3" blockId="7.[845,1466,189,244]" pageId="7" pageNumber="153">
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||
(
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<figureCitation id="14892A59FFA3FFF7D405FF59E094DAD3" box="[854,969,189,212]" captionStart="Figure 3" captionStartId="5.[159,227,1426,1447]" captionTargetBox="[175,1452,183,1394]" captionTargetId="figure-187@5.[175,1452,183,1394]" captionTargetPageId="5" captionText="Figure 3. Drawings of Eocene otoliths from Seymour Island. A—C, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged; A, outer face; B, ventral view; C, inner face. D—I, Diaphus? marambionis sp. nov.; D—F, holotype, NRM-PZ P.15966; D, anterior view, E, inner face, F, ventral view; G—I, (mirror imaged) paratypes, NRM-PZ P.15967; G, inner face; H, ventral view; I, inner face. J, K, Paraulopus sp., NRM-PZ P.15965, mirror imaged; J, inner face; K, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10883108" httpUri="https://zenodo.org/record/10883108/files/figure.png" pageId="7" pageNumber="153">Fig. 3G—I</figureCitation>
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). Other material: two fragmentary specimens NRM-PZ P.15968.
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</paragraph>
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<paragraph id="8C0D36DCFFA3FFF7D41EFEF4E62BDB60" blockId="7.[845,1467,272,359]" pageId="7" pageNumber="153">
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<emphasis id="BEC6EACEFFA3FFF7D41EFEF4E084DB20" bold="true" box="[845,985,272,295]" pageId="7" pageNumber="153">Occurrence.</emphasis>
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Telm 5 unit; ‘
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<taxonomicName id="4BB24D5FFFA3FFF7D3DBFEF4E792DB20" authorityName="Scopoli" authorityYear="1777" box="[1160,1231,272,295]" class="Gastropoda" family="Naticidae" genus="Natica" kingdom="Animalia" order="Littorinimorpha" pageId="7" pageNumber="153" phylum="Mollusca" rank="genus">
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||
<emphasis id="BEC6EACEFFA3FFF7D3DBFEF4E792DB20" box="[1160,1231,272,295]" italics="true" pageId="7" pageNumber="153">Natica</emphasis>
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</taxonomicName>
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horizon’,
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<taxonomicName id="4BB24D5FFFA3FFF7D215FEF4E6FBDB20" box="[1350,1446,272,295]" class="Bivalvia" family="Cucullaeidae" genus="Cucullea" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Arcida" pageId="7" pageNumber="153" phylum="Mollusca" rank="genus">
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<emphasis id="BEC6EACEFFA3FFF7D215FEF4E6FBDB20" box="[1350,1446,272,295]" italics="true" pageId="7" pageNumber="153">Cucullea</emphasis>
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</taxonomicName>
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I member, La Meseta Formation, late Ypresian, early Eocene. Site IAA 2/95, Seymour Island,
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<collectingCountry id="F4A5764CFFA3FFF7D3ACFEB4E62FDB60" box="[1279,1394,336,359]" name="Antarctica" pageId="7" pageNumber="153">Antarctica</collectingCountry>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C4A86557FFA3FFF7D41EFE67E797DBBD" pageId="7" pageNumber="153" type="etymology">
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<paragraph id="8C0D36DCFFA3FFF7D41EFE67E797DBBD" blockId="7.[845,1466,387,442]" pageId="7" pageNumber="153">
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<emphasis id="BEC6EACEFFA3FFF7D41EFE67E092DB9D" bold="true" box="[845,975,387,410]" pageId="7" pageNumber="153">Etymology.</emphasis>
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Named after Marambio, the Argentinian research station on Seymour Island.
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</paragraph>
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</subSubSection>
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<subSubSection id="C4A86557FFA3FFF7D41EFE32E732D86B" pageId="7" pageNumber="153" type="diagnosis">
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<paragraph id="8C0D36DCFFA3FFF7D41EFE32E732D86B" blockId="7.[845,1467,470,620]" pageId="7" pageNumber="153">
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<emphasis id="BEC6EACEFFA3FFF7D41EFE32E09CDBEA" bold="true" box="[845,961,470,493]" pageId="7" pageNumber="153">Diagnosis.</emphasis>
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OL:OH about 1.3. Ventral rim shallow. Dorsal rim regularly rounded, slightly depressed postdorsally. Rostrum about 10% of OL.
|
||
<collectionCode id="EAA3AE19FFA3FFF7D3D0FDF2E7E7D82A" box="[1155,1210,534,557]" pageId="7" pageNumber="153">OCL</collectionCode>
|
||
:
|
||
<collectionCode id="EAA3AE19FFA3FFF7D3EDFDF2E7A9D82A" box="[1214,1268,534,557]" pageId="7" pageNumber="153">CCL</collectionCode>
|
||
= 1.5. Inner face convex. Dorsal margin of ostium curved. Caudal pseudocolliculum well developed.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C4A86557FFA3FFF7D41EFD6DE0E6DF5A" pageId="7" pageNumber="153" type="description">
|
||
<paragraph id="8C0D36DCFFA3FFF7D41EFD6DE665D9D9" blockId="7.[845,1467,649,1373]" pageId="7" pageNumber="153">
|
||
<emphasis id="BEC6EACEFFA3FFF7D41EFD6DE085D8A7" bold="true" box="[845,984,649,672]" pageId="7" pageNumber="153">Description.</emphasis>
|
||
One well-preserved and four incompletely preserved or partly encrusted otoliths; moderately thick and up to nearly
|
||
<quantity id="4B4A9B39FFA3FFF7D356FD2CE71ED8D8" box="[1029,1091,712,735]" metricMagnitude="-3" metricUnit="m" metricValue="6.0" pageId="7" pageNumber="153" unit="mm" value="6.0">6 mm</quantity>
|
||
in length (
|
||
<typeStatus id="5309887EFFA3FFF7D3E9FD2CE644D8D8" box="[1210,1305,712,735]" pageId="7" pageNumber="153" type="holotype">holotype</typeStatus>
|
||
<quantity id="4B4A9B39FFA3FFF7D272FD2CE62ED8D8" box="[1313,1395,712,735]" metricMagnitude="-3" metricUnit="m" metricValue="5.2" pageId="7" pageNumber="153" unit="mm" value="5.2">5.2 mm</quantity>
|
||
long). OH:OT = 3.5—4.0. Dorsal rim rather regularly curved, slightly undulating, somewhat depressed postdorsally and regularly inclined predorsally, sometimes with slight postdorsal angle. Ventral rim shallow, slightly undulating, with (eroded) denticles or protuberances indicated by up to eight grooves seen in ventral view (
|
||
<figureCitation id="14892A59FFA3FFF7D3A9FC6CE62FD998" box="[1274,1394,904,927]" captionStart="Figure 3" captionStartId="5.[159,227,1426,1447]" captionTargetBox="[175,1452,183,1394]" captionTargetId="figure-187@5.[175,1452,183,1394]" captionTargetPageId="5" captionText="Figure 3. Drawings of Eocene otoliths from Seymour Island. A—C, Argentina antarctica sp. nov., holotype, NRM-PZ P.15964, mirror imaged; A, outer face; B, ventral view; C, inner face. D—I, Diaphus? marambionis sp. nov.; D—F, holotype, NRM-PZ P.15966; D, anterior view, E, inner face, F, ventral view; G—I, (mirror imaged) paratypes, NRM-PZ P.15967; G, inner face; H, ventral view; I, inner face. J, K, Paraulopus sp., NRM-PZ P.15965, mirror imaged; J, inner face; K, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10883108" httpUri="https://zenodo.org/record/10883108/files/figure.png" pageId="7" pageNumber="153">Fig. 3E, G</figureCitation>
|
||
). Rostrum slightly projecting, blunt, about 10% of OL. Posterior rim rounded, with its tip above caudal tip.
|
||
</paragraph>
|
||
<paragraph id="8C0D36DCFFA3FFF7D434FC03E0E6DF5A" blockId="7.[845,1467,649,1373]" pageId="7" pageNumber="153">Inner face markedly convex, with moderately wide, median, shallow sulcus. Ostium about 1.5 times the length of cauda and equally wide, its dorsal margin slightly curved; cauda slightly bent upwards, terminating at moderate distance from posterior rim of otolith, its colliculum narrower than ostial colliculum; caudal pseudocolliculum well developed. Dorsal depression wide; ventral field with distinct ventral furrow moderately close to ventral rim of otolith and few faint radial furrows underpinning the marginal crenulation or inter-denticle incisions. Outer face flat to slightly concave, rather smooth, with faint postcentral umbo.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C4A86557FFA3FFF8D41EFA9DE2B8D935" lastPageId="8" lastPageNumber="154" pageId="7" pageNumber="153" type="discussion">
|
||
<paragraph id="8C0D36DCFFA3FFF7D41EFA9DE70FDFE8" blockId="7.[845,1467,1401,1934]" pageId="7" pageNumber="153">
|
||
<emphasis id="BEC6EACEFFA3FFF7D41EFA9DE0E6DF97" bold="true" box="[845,955,1401,1424]" pageId="7" pageNumber="153">Remarks.</emphasis>
|
||
The degree of variability appears to be relatively low in this species and confined to minor variations of the expression of the postdorsal depression and the thickness of the otoliths.
|
||
</paragraph>
|
||
<paragraph id="8C0D36DCFFA3FFF8D434FA1CE2F3DB33" blockId="7.[845,1467,1401,1934]" lastBlockId="8.[159,781,189,818]" lastPageId="8" lastPageNumber="154" pageId="7" pageNumber="153">
|
||
A number of myctophid otoliths have been described from the Eocene strata of south-west
|
||
<collectingCountry id="F4A5764CFFA3FFF7D3BBF9FCE66CDC28" box="[1256,1329,1560,1583]" name="France" pageId="7" pageNumber="153">France</collectingCountry>
|
||
(Nolf 1988) and
|
||
<collectingCountry id="F4A5764CFFA3FFF7D42AF9DCE086DC48" box="[889,987,1592,1615]" name="Australia" pageId="7" pageNumber="153">Australia</collectingCountry>
|
||
(
|
||
<bibRefCitation id="E8234B2DFFA3FFF7D4BBF9DCE7EFDC48" author="Schwarzhans, W." box="[1000,1202,1592,1615]" pageId="7" pageNumber="153" pagination="1 - 60" refId="ref17787" refString="Schwarzhans, W. 1985. Terti ¨ are Otolithen aus South Australia und Vict (Australien). Palaeo Ichthyologica, 3, 1 - 60." type="journal article" year="1985">Schwarzhans 1985</bibRefCitation>
|
||
) as well as the early Oligocene of
|
||
<collectingCountry id="F4A5764CFFA3FFF7D4EDF9BCE0B2DC68" box="[958,1007,1624,1647]" name="Italy" pageId="7" pageNumber="153">Italy</collectingCountry>
|
||
(
|
||
<bibRefCitation id="E8234B2DFFA3FFF7D4ADF9BCE7A5DC68" author="Nolf, D. & Steurbaut, E." box="[1022,1272,1624,1647]" pageId="7" pageNumber="153" pagination="217 - 230" refId="ref16966" refString="Nolf, D. & Steurbaut, E. 1988. Description de la premi`ere faune ichthyologique exclusivement bathyale du Tertiare d'Europe: otolithes de l'Oligoc`ene Inf´erieur du gisement de Pizzocorno, Italie septentrionale. Bulletin de l'Institute Royal des sciences naturelles de Belgique, Sciences de la terre, 57, 217 - 230." type="journal article" year="1988">Nolf & Steurbaut 1988</bibRefCitation>
|
||
) and have mostly been placed in the genus
|
||
<taxonomicName id="4BB24D5FFFA3FFF7D322F99CE796DC88" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[1137,1227,1656,1679]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="7" pageNumber="153" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFA3FFF7D322F99CE796DC88" box="[1137,1227,1656,1679]" italics="true" pageId="7" pageNumber="153">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
. Most of the Eocene species are characterized by compressed roundish otoliths without denticles at the ventral rim or some degree of crenulation and we consider the majority of those to represent the fossil skeleton-based genus
|
||
<taxonomicName id="4BB24D5FFFA3FFF7D3B7F913E621DD09" authorityName="Daniltshenko" authorityYear="1947" box="[1252,1404,1783,1806]" family="Myctophidae" genus="Eomyctophum" higherTaxonomySource="GBIF" kingdom="Animalia" order="Myctophiformes" pageId="7" pageNumber="153" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFA3FFF7D3B7F913E621DD09" box="[1252,1404,1783,1806]" italics="true" pageId="7" pageNumber="153">Eomyctophum</emphasis>
|
||
</taxonomicName>
|
||
(otoliths
|
||
<emphasis id="BEC6EACEFFA3FFF7D4D1F8F3E098DD29" box="[898,965,1815,1838]" italics="true" pageId="7" pageNumber="153">in situ</emphasis>
|
||
figured by
|
||
<bibRefCitation id="E8234B2DFFA3FFF7D311F8F3E656DD29" author="Schwarzhans, W." box="[1090,1291,1815,1838]" pageId="7" pageNumber="153" pagination="1 - 60" refId="ref17787" refString="Schwarzhans, W. 1985. Terti ¨ are Otolithen aus South Australia und Vict (Australien). Palaeo Ichthyologica, 3, 1 - 60." type="journal article" year="1985">Schwarzhans 1985</bibRefCitation>
|
||
), while those of the early Oligocene and a few from the late Eocene exhibit all the characters considered to be diagnostic for modern
|
||
<taxonomicName id="4BB24D5FFFA3FFF7D4E3F893E757DD89" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[944,1034,1911,1934]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="7" pageNumber="153" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFA3FFF7D4E3F893E757DD89" box="[944,1034,1911,1934]" italics="true" pageId="7" pageNumber="153">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
otoliths (
|
||
<bibRefCitation id="E8234B2DFFA3FFF7D3D7F893E604DD89" author="Schwarzhans, W." box="[1156,1369,1911,1934]" pageId="7" pageNumber="153" pagination="41 - 82" refId="ref18020" refString="Schwarzhans, W. 2013. A comparative morphological study of the Recent otoliths of the genera Diaphus, Idiolychnus and Lobianchia (Myctophidae). Palaeo Ichthyologica, 13, 41 - 82." type="journal article" year="2013">Schwarzhans 2013</bibRefCitation>
|
||
). These characters include the shallow ventral rim with denticles, the shape of the dorsal rim with the depressed postdorsal region, the dorsally shifted tip of the posterior rim and the proportions of the sulcus.
|
||
</paragraph>
|
||
<paragraph id="8C0D36DCFFACFFF8D7E9FED9E2B8D935" blockId="8.[159,781,189,818]" pageId="8" pageNumber="154">
|
||
The otoliths of
|
||
<emphasis id="BEC6EACEFFACFFF8D63AFED9E2D9DB53" box="[361,388,317,340]" italics="true" pageId="8" pageNumber="154">D.</emphasis>
|
||
?
|
||
<emphasis id="BEC6EACEFFACFFF8D6CAFED9E178DB53" box="[409,549,317,340]" italics="true" pageId="8" pageNumber="154">marambionis</emphasis>
|
||
sp. nov. share those diagnostic features with otoliths of extant species of the genus
|
||
<taxonomicName id="4BB24D5FFFACFFF8D7BBFE99E21FDB93" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[232,322,381,404]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D7BBFE99E21FDB93" box="[232,322,381,404]" italics="true" pageId="8" pageNumber="154">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
and its close relative
|
||
<taxonomicName id="4BB24D5FFFACFFF8D56EFE99E1EBDB93" authorityName="Gatti" authorityYear="1904" box="[573,694,381,404]" family="Myctophidae" genus="Lobianchia" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D56EFE99E1EBDB93" box="[573,694,381,404]" italics="true" pageId="8" pageNumber="154">Lobianchia</emphasis>
|
||
</taxonomicName>
|
||
, except for the indistinctly preserved denticles at the ventral rim, and thus represent the earliest record of the
|
||
<taxonomicName id="4BB24D5FFFACFFF8D5F8FE58E058DBD4" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[683,773,444,467]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D5F8FE58E058DBD4" box="[683,773,444,467]" italics="true" pageId="8" pageNumber="154">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
/
|
||
<taxonomicName id="4BB24D5FFFACFFF8D7CCFE38E245DBF4" authorityName="Gatti" authorityYear="1904" box="[159,280,476,499]" family="Myctophidae" genus="Lobianchia" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D7CCFE38E245DBF4" box="[159,280,476,499]" italics="true" pageId="8" pageNumber="154">Lobianchia</emphasis>
|
||
</taxonomicName>
|
||
lineage known to date. The two genera are difficult to distinguish by means of otoliths (
|
||
<bibRefCitation id="E8234B2DFFACFFF8D52CFE18E389D834" author="Schwarzhans, W." pageId="8" pageNumber="154" pagination="41 - 82" refId="ref18020" refString="Schwarzhans, W. 2013. A comparative morphological study of the Recent otoliths of the genera Diaphus, Idiolychnus and Lobianchia (Myctophidae). Palaeo Ichthyologica, 13, 41 - 82." type="journal article" year="2013">Schwarzhans 2013</bibRefCitation>
|
||
) and it is quite possible that
|
||
<emphasis id="BEC6EACEFFACFFF8D543FDF8E177D834" box="[528,554,540,563]" italics="true" pageId="8" pageNumber="154">D.</emphasis>
|
||
?
|
||
<emphasis id="BEC6EACEFFACFFF8D56DFDF8E197D834" box="[574,714,540,563]" italics="true" pageId="8" pageNumber="154">marambionis</emphasis>
|
||
could represent a taxon predating the dichotomy of the two extant genera. We therefore consider the placement of
|
||
<emphasis id="BEC6EACEFFACFFF8D5B4FDB8E05FD874" box="[743,770,604,627]" italics="true" pageId="8" pageNumber="154">D.</emphasis>
|
||
?
|
||
<emphasis id="BEC6EACEFFACFFF8D7CCFD98E276D894" box="[159,299,636,659]" italics="true" pageId="8" pageNumber="154">marambionis</emphasis>
|
||
as preliminary until a more detailed review of Palaeogene myctophid otoliths has been performed or more otoliths
|
||
<emphasis id="BEC6EACEFFACFFF8D66BFD5FE221D8D5" box="[312,380,699,722]" italics="true" pageId="8" pageNumber="154">in situ</emphasis>
|
||
have been retrieved.
|
||
<taxonomicName id="4BB24D5FFFACFFF8D539FD5FE199D8D5" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[618,708,699,722]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D539FD5FE199D8D5" box="[618,708,699,722]" italics="true" pageId="8" pageNumber="154">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
?
|
||
<emphasis id="BEC6EACEFFACFFF8D58AFD5FE25CD8F5" italics="true" pageId="8" pageNumber="154">marambionis</emphasis>
|
||
is also remarkable for achieving a considerable size, though not quite reaching the size of the largest early Oligocene species of
|
||
<taxonomicName id="4BB24D5FFFACFFF8D6D7FCFFE283D935" authorityName="Eigenmann & Eigenmann" authorityYear="1890" box="[388,478,795,818]" family="Myctophidae" genus="Diaphus" kingdom="Animalia" order="Myctophiformes" pageId="8" pageNumber="154" phylum="Chordata" rank="genus">
|
||
<emphasis id="BEC6EACEFFACFFF8D6D7FCFFE283D935" box="[388,478,795,818]" italics="true" pageId="8" pageNumber="154">Diaphus</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |