577 lines
73 KiB
XML
577 lines
73 KiB
XML
<document id="B2D42B86956394A62D66736C5B965D0A" ID-DOI="10.5281/zenodo.197498" ID-GBIF-Dataset="688ce0fc-f816-4dbb-aa80-7978d2e6a37d" ID-ISSN="1175-5326" ID-Zenodo-Dep="197498" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460272279275" checkinUser="plazi" docAuthor="Saether, Kristian P., Little, Crispin T. S., Campbell, Kathleen A., Marshall, Bruce A., Collins, Mike & Alfaro, Andrea C." docDate="2010" docId="B43A87A0BF42FA506689FA34FEEBF841" docLanguage="en" docName="zt02577p045.pdf" docOrigin="Zootaxa 2577" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Gigantidas coseli Saether, Little, Campbell, Marshall, Collins and Alfaro, sp. nov." docType="treatment" docVersion="9" lastPageNumber="26" masterDocId="4803FFD8BF56FA49661EFFABFFE3FFCD" masterDocTitle="New fossil mussels (Bivalvia: Mytilidae) from Miocene hydrocarbon seep deposits, North Island, New Zealand, with general remarks on vent and seep mussels" masterLastPageNumber="45" masterPageNumber="1" pageNumber="21" updateTime="1698247026114" updateUser="plazi">
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<mods:titleInfo id="59224EA043199529561ABA513C8DB3EE">
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<mods:title id="EF2C5DEDCD9A59A1A5D45BA3CE086188">New fossil mussels (Bivalvia: Mytilidae) from Miocene hydrocarbon seep deposits, North Island, New Zealand, with general remarks on vent and seep mussels</mods:title>
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<mods:roleTerm id="F0CC06C6A0762B682FF6D70A286E5AF2">Author</mods:roleTerm>
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<mods:namePart id="87D4CBE104D210CE7E4199B84EF6B6E0">Saether, Kristian P.</mods:namePart>
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<mods:roleTerm id="9B25383484A6954AB4FE435951EA4847">Author</mods:roleTerm>
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<mods:namePart id="4BFFEE4DCF0EBE9D66213A7C5AF1AFE0">Little, Crispin T. S.</mods:namePart>
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<mods:roleTerm id="09D388A06A13609DBD221F2543D99D93">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="FC3E2C47D7DA54EBAF6F50AFF625F6C0">Campbell, Kathleen A.</mods:namePart>
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<mods:roleTerm id="1790BBC41199FE2C0ACCF7F016892110">Author</mods:roleTerm>
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<mods:namePart id="AE149FA3C07A06E011EB30B10324FD21">Marshall, Bruce A.</mods:namePart>
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<mods:namePart id="04998A865B1135D593526D3CC6B19512">Collins, Mike</mods:namePart>
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<mods:roleTerm id="69B8B00FB71CBADBABB0DE55FB0E1BE3">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="BE0BFDFAC2CF772E149A150D18863310">Alfaro, Andrea C.</mods:namePart>
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<mods:typeOfResource id="B03FA2D585D8BE023F8CDD09B9D47DDC">text</mods:typeOfResource>
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<mods:title id="166E3179D11433460427B19BC1215906">Zootaxa</mods:title>
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<mods:date id="B9C05763BABB1110F27A7FB5E8C1D76B">2010</mods:date>
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<mods:detail id="A1AC0E355ED8925F6AE1FCEB11108FBB" type="volume">
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<mods:number id="7F250B876FA25D49B50B86C8848FAA55">2577</mods:number>
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<mods:classification id="2B885B3F47C1C41BDB3D93935A3228CF">journal article</mods:classification>
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<mods:identifier id="6F58D9A4347BDCCBBF6288217A3C9329" type="DOI">10.5281/zenodo.197498</mods:identifier>
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<mods:identifier id="BF77EBF71C2E4BF989E6B87AAC53752E" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="F28442E84E6C7C36ACD1D3C751901AC0" type="Zenodo-Dep">197498</mods:identifier>
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<treatment id="B43A87A0BF42FA506689FA34FEEBF841" ID-DOI="http://doi.org/10.5281/zenodo.5662456" ID-GBIF-Taxon="119395343" ID-Zenodo-Dep="5662456" LSID="urn:lsid:plazi:treatment:B43A87A0BF42FA506689FA34FEEBF841" httpUri="http://treatment.plazi.org/id/B43A87A0BF42FA506689FA34FEEBF841" lastPageId="25" lastPageNumber="26" pageId="20" pageNumber="21">
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<subSubSection id="7489653DBF42FA5D6689FA34FD9CF969" pageId="20" pageNumber="21" type="nomenclature">
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<paragraph id="3C2C36B6BF42FA5D6689FA34FB07FA74" blockId="20.[151,1252,1439,1500]" box="[151,1252,1439,1465]" pageId="20" pageNumber="21">
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<heading id="676481DABF42FA5D6689FA34FB07FA74" bold="true" box="[151,1252,1439,1465]" fontSize="11" level="1" pageId="20" pageNumber="21" reason="1">
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<emphasis id="0EE7EAA4BF42FA5D6689FA34FB07FA74" bold="true" box="[151,1252,1439,1465]" pageId="20" pageNumber="21">
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Species
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<taxonomicName id="FB934D35BF42FA5D66E7FA34FB9CFA74" authority="Saether, Little, Campbell, Marshall, Collins and Alfaro" authorityName="Saether, Little, Campbell, Marshall, Collins and Alfaro" box="[249,1151,1439,1465]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="20" pageNumber="21" phylum="Mollusca" rank="species" species="coseli" status="sp. nov.">
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<emphasis id="0EE7EAA4BF42FA5D66E7FA34FE2AFA74" bold="true" box="[249,457,1439,1465]" italics="true" pageId="20" pageNumber="21">Gigantidas coseli</emphasis>
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Saether, Little, Campbell,
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<collectingCountry id="44847626BF42FA5D6509FA34FC68FA74" box="[791,907,1439,1465]" name="Marshall Islands" pageId="20" pageNumber="21">Marshall</collectingCountry>
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, Collins and Alfaro
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</taxonomicName>
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<taxonomicNameLabel id="15D457DFBF42FA5D6298FA34FB07FA74" box="[1158,1252,1439,1465]" pageId="20" pageNumber="21" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D6689FA69FE46FA11" blockId="20.[151,1252,1439,1500]" box="[151,421,1474,1500]" pageId="20" pageNumber="21">
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(
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<figureCitation id="A4A82A33BF42FA5D6681FA69FF12FA11" box="[159,241,1474,1500]" captionStart="FIGURE 4" captionStartId="12.[151,255,1323,1347]" captionTargetBox="[153,1433,447,1302]" captionTargetId="figure@12.[153,1434,447,1302]" captionTargetPageId="12" captionText="FIGURE 4. Images showing typical hydrocarbon seep carbonate deposit and appearance of New Zealand hydrocarbon seep mussels in field samples before curating. A. Several float boulders (arrowed) originating upslope at Moonlight North locality. Person for scale. B. Clustered specimens of Gigantidas coseli sp. nov. occurring in situ from Bexhaven locality. Scale bar is 20 mm. C. Ex situ occurrence of specimens of G. c o s e l i (arrowed) from Moonlight North. Scale bar is 30 mm." httpUri="https://zenodo.org/record/197502/files/figure.png" pageId="20" pageNumber="21">Figs. 4</figureCitation>
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B, C, 8–10, 17)
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D6689F9A6FDDBF989" blockId="20.[151,1002,1549,1700]" pageId="20" pageNumber="21">
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?Mytilid closely resembling
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<taxonomicName id="FB934D35BF42FA5D67D7F9A6FCF3F9E9" authority="Beu & Maxwell, 1990" authorityName="Beu & Maxwell" authorityYear="1990" box="[457,784,1549,1572]" class="Bivalvia" family="Mytilidae" genus="Idasola" higherTaxonomySource="CoL" kingdom="Animalia" order="Mytilida" pageId="20" pageNumber="21" phylum="Mollusca" rank="genus">
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<emphasis id="0EE7EAA4BF42FA5D67D7F9A6FDFAF9E9" box="[457,537,1549,1572]" italics="true" pageId="20" pageNumber="21">Idasola</emphasis>
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<bibRefCitation id="58024B47BF42FA5D6401F9A6FCF3F9E9" author="Beu" box="[543,784,1549,1572]" pageId="20" pageNumber="21" refString="Beu, A. G. & Maxwell, P. A. (1990) Cenozoic Mollusca of New Zealand. New Zealand Geological Survey Paleontological Bulletin, 58, 1 - 518." type="journal article" year="1990">Beu & Maxwell, 1990</bibRefCitation>
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</taxonomicName>
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.?
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<taxonomicName id="FB934D35BF42FA5D66BDF986FEA0F989" box="[163,323,1581,1604]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="20" pageNumber="21" phylum="Mollusca" rank="genus" status="sp. nov.">
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<emphasis id="0EE7EAA4BF42FA5D66BDF986FEA0F989" box="[163,323,1581,1604]" italics="true" pageId="20" pageNumber="21">Bathymodiolus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="15D457DFBF42FA5D6757F986FE60F989" box="[329,387,1581,1604]" pageId="20" pageNumber="21" rank="species">n. sp.</taxonomicNameLabel>
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B
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<bibRefCitation id="58024B47BF42FA5D67BFF986FDD7F989" author="Collins" box="[417,564,1581,1604]" pageId="20" pageNumber="21" refString="Collins, M. (1999) A biometric and taxonomic study of Miocene-age, hydrocarbon-seep mussels from the East Coast of the North Island, New Zealand. MSc thesis, University of Auckland, Auckland, 67 pp." type="book" year="1999">Collins, 1999</bibRefCitation>
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.
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D6689F9E6FE26F9A9" blockId="20.[151,1002,1549,1700]" box="[151,453,1613,1636]" pageId="20" pageNumber="21">
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Group 3 (G3)
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<bibRefCitation id="58024B47BF42FA5D6730F9E6FE22F9A9" author="Collins" box="[302,449,1613,1636]" pageId="20" pageNumber="21" refString="Collins, M. (1999) A biometric and taxonomic study of Miocene-age, hydrocarbon-seep mussels from the East Coast of the North Island, New Zealand. MSc thesis, University of Auckland, Auckland, 67 pp." type="book" year="1999">Collins, 1999</bibRefCitation>
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.
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D6689F9C6FD9CF969" blockId="20.[151,1002,1549,1700]" pageId="20" pageNumber="21">
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Large, curved, elongate fossil form similar to
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<taxonomicName id="FB934D35BF42FA5D649EF9C6FC04F949" authority="Campbell et al., 2008" authorityName="Campbell et al." authorityYear="2008" box="[640,999,1645,1668]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="20" pageNumber="21" phylum="Mollusca" rank="genus">
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<emphasis id="0EE7EAA4BF42FA5D649EF9C6FD14F949" box="[640,759,1645,1668]" italics="true" pageId="20" pageNumber="21">Gigantidas</emphasis>
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<bibRefCitation id="58024B47BF42FA5D64E3F9C6FC04F949" author="Campbell" box="[765,999,1645,1668]" pageId="20" pageNumber="21" refString="Campbell, K. A., Francis, D. A., Collins, M., Gregory, M. R., Greinert, J. & Aharon, P. (2008) Hydrocarbon seepcarbonates of a Miocene forearc (East Coast Basin), North Island, New Zealand. Sedimentary Geology, 204, 83 - 105." type="journal article" year="2008">
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Campbell
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<emphasis id="0EE7EAA4BF42FA5D6575F9C6FC42F949" box="[875,929,1645,1668]" italics="true" pageId="20" pageNumber="21">et al.</emphasis>
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, 2008
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</bibRefCitation>
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</taxonomicName>
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. Bathymodioline bivalves
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<bibRefCitation id="58024B47BF42FA5D67B7F926FD98F969" author="Saether" box="[425,635,1677,1700]" pageId="20" pageNumber="21" refString="Saether, K. P., Little, C. T. S. & Campbell, K. A. (2010) A new fossil provannid gastropod from Miocene hydrocarbon seep deposits, East Coast Basin, North Island, New Zealand. Acta Palaeontologica Polonica, 55, doi: 10.4202 / app. 2009.1112." type="journal volume" year="2010">
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Saether
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<emphasis id="0EE7EAA4BF42FA5D67E1F926FDCEF969" box="[511,557,1677,1700]" italics="true" pageId="20" pageNumber="21">et al</emphasis>
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., 2010
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</bibRefCitation>
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.
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</paragraph>
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</subSubSection>
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||
<subSubSection id="7489653DBF42FA5C6689F979FAF9F807" lastPageId="21" lastPageNumber="22" pageId="20" pageNumber="21" type="materials_examined">
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<paragraph id="3C2C36B6BF42FA5D6689F979FC8AF921" blockId="20.[151,1436,1746,2034]" box="[151,873,1746,1772]" pageId="20" pageNumber="21">
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||
<emphasis id="0EE7EAA4BF42FA5D6689F979FEF3F921" bold="true" box="[151,272,1746,1772]" pageId="20" pageNumber="21">
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<typeStatus id="E3288814BF42FA5D6689F979FEE8F921" box="[151,267,1746,1772]" pageId="20" pageNumber="21" type="holotype">Holotype</typeStatus>
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.
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</emphasis>
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Specimen L4203 (
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<figureCitation id="A4A82A33BF42FA5D67F1F979FDDCF921" box="[495,575,1746,1772]" captionStart="FIGURE 8" captionStartId="21.[151,255,1658,1682]" captionTargetBox="[151,1436,197,1644]" captionTargetId="figure@21.[151,1436,197,1645]" captionTargetPageId="21" captionText="FIGURE 8. Growth series and holotype of Gigantidas coseli sp. nov. A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A. 1. Paratype L 4204. A. 2. Paratype TM 8750. A. 3. Specimen L 4563. A. 4. Paratype L 4215. A. 5. Specimen L 4561. A. 6. Holotype L 4203. A. 7. Specimen L 4211. B. Diagnostic views of holotype L 4203. Scale bar is 10 mm. B. 1. Anterior view. B. 2. Dorsal view. B. 3. Lateral view of left valve. B. 4. Lateral view of right valve." httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="20" pageNumber="21">Figs. 8</figureCitation>
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A.6, B.1–4), adult,
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<collectionCode id="5A82AE73BF42FA5D653CF979FC86F921" box="[802,869,1746,1772]" httpUri="http://grbio.org/cool/0hg2-xg9x" name="UOA/HCPF University of Athens/Hellenic Collection of Pathogenic Fungi" pageId="20" pageNumber="21">UOA</collectionCode>
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.
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D66D8F95CFC2FF8FA" blockId="20.[151,1436,1746,2034]" pageId="20" pageNumber="21">
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<emphasis id="0EE7EAA4BF42FA5D66D8F95CFE8DF8DC" bold="true" box="[198,366,1783,1809]" pageId="20" pageNumber="21">
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<typeStatus id="E3288814BF42FA5D66D8F95CFEE0F8DC" box="[198,259,1783,1809]" pageId="20" pageNumber="21">Type</typeStatus>
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locality.
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</emphasis>
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Moonlight North (Y16/f1054), Hawke’s Bay, North Island,
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<collectingCountry id="44847626BF42FA5D6221F953FB01F8DF" box="[1087,1250,1784,1810]" name="New Zealand" pageId="20" pageNumber="21">New Zealand</collectingCountry>
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; Waiauan (Late Middle Miocene–Earliest Late Miocene) hydrocarbon seep carbonate.
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</paragraph>
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<paragraph id="3C2C36B6BF42FA5D66D8F8E9FC83F83F" blockId="20.[151,1436,1746,2034]" pageId="20" pageNumber="21">
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<emphasis id="0EE7EAA4BF42FA5D66D8F8E9FEA8F891" bold="true" box="[198,331,1858,1884]" pageId="20" pageNumber="21">
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<typeStatus id="E3288814BF42FA5D66D8F8E9FEA5F891" box="[198,326,1858,1884]" pageId="20" pageNumber="21" type="paratype">Paratypes</typeStatus>
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.
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</emphasis>
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Eight moderately to well preserved small to large specimens. One small, TM8750 (
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<figureCitation id="A4A82A33BF42FA5D6305F8E9FABCF891" box="[1307,1375,1858,1884]" captionStart="FIGURE 8" captionStartId="21.[151,255,1658,1682]" captionTargetBox="[151,1436,197,1644]" captionTargetId="figure@21.[151,1436,197,1645]" captionTargetPageId="21" captionText="FIGURE 8. Growth series and holotype of Gigantidas coseli sp. nov. A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A. 1. Paratype L 4204. A. 2. Paratype TM 8750. A. 3. Specimen L 4563. A. 4. Paratype L 4215. A. 5. Specimen L 4561. A. 6. Holotype L 4203. A. 7. Specimen L 4211. B. Diagnostic views of holotype L 4203. Scale bar is 10 mm. B. 1. Anterior view. B. 2. Dorsal view. B. 3. Lateral view of left valve. B. 4. Lateral view of right valve." httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="20" pageNumber="21">Fig. 8</figureCitation>
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A.2), one medium sized, TM8749 (
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<figureCitation id="A4A82A33BF42FA5D67E9F8C3FDA9F84F" box="[503,586,1896,1922]" captionStart="FIGURE 9" captionStartId="23.[151,257,1604,1628]" captionText="FIGURE 9. Various shell features observed upon specimens of Gigantidas coseli sp. nov. A. Specimen L 4559, left valve, showing pallial line and separated anterior and (very faint) posterior portions of posterior byssal retractor scar. Original photograph (left) vs. highlighted scars (right). Scale bar is 5 mm. B. Specimen L 4562, posterior portion of internal right valve, showing growth lines within the moderate-sized posterior adductor muscle scar. Original photograph (left) vs. highlighted muscle scars (right). Scale bar is 10 mm. C, D. Paratype TM 8749. C. Posterior adductor scar and posterior portion of pallial line on internal left valve of half-grown shell. Original photograph, oblique lateral view (left) vs. highlighted scars, lateral view (right). Scale bar is 5 mm. D. Oblique dorsal view of right valve, showing posterior tapering condition of ligament. Original photograph (top) vs. highlighted ligamental impression (bottom). Scale bar is 10 mm. E. Paratype L 4209, close up anterior view of the umbones showing details of the early shell. F. Specimen L 4568, dorsal area of right valve, showing well preserved striations of the fibrous layer of the ligament. Scar bar is 2 mm. apb: scar of anterior part of posterior byssal retractor; fl: fibrous layer of ligament; lig: ligament; lv: left valve; pa: scar of posterior adductor; pl: pallial line; ppb: scar of posterior part of posterior byssal retractor; rv: right valve; sh: shell." pageId="20" pageNumber="21">Figs. 9</figureCitation>
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C, D), from Bexhaven (Y16/f0566); three large, L4560, L4210, L4213, from Moonlight North (Y16/f1033, Y16/f1054); one small, L4204 (
|
||
<figureCitation id="A4A82A33BF42FA5D65CFF826FBF9F86A" box="[977,1050,1933,1959]" captionStart="FIGURE 8" captionStartId="21.[151,255,1658,1682]" captionTargetBox="[151,1436,197,1644]" captionTargetId="figure@21.[151,1436,197,1645]" captionTargetPageId="21" captionText="FIGURE 8. Growth series and holotype of Gigantidas coseli sp. nov. A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A. 1. Paratype L 4204. A. 2. Paratype TM 8750. A. 3. Specimen L 4563. A. 4. Paratype L 4215. A. 5. Specimen L 4561. A. 6. Holotype L 4203. A. 7. Specimen L 4211. B. Diagnostic views of holotype L 4203. Scale bar is 10 mm. B. 1. Anterior view. B. 2. Dorsal view. B. 3. Lateral view of left valve. B. 4. Lateral view of right valve." httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="20" pageNumber="21">Fig. 8</figureCitation>
|
||
A.1), one medium sized, L4209 (
|
||
<figureCitation id="A4A82A33BF42FA5D66BEF819FF04F801" box="[160,231,1970,1996]" captionStart="FIGURE 9" captionStartId="23.[151,257,1604,1628]" captionText="FIGURE 9. Various shell features observed upon specimens of Gigantidas coseli sp. nov. A. Specimen L 4559, left valve, showing pallial line and separated anterior and (very faint) posterior portions of posterior byssal retractor scar. Original photograph (left) vs. highlighted scars (right). Scale bar is 5 mm. B. Specimen L 4562, posterior portion of internal right valve, showing growth lines within the moderate-sized posterior adductor muscle scar. Original photograph (left) vs. highlighted muscle scars (right). Scale bar is 10 mm. C, D. Paratype TM 8749. C. Posterior adductor scar and posterior portion of pallial line on internal left valve of half-grown shell. Original photograph, oblique lateral view (left) vs. highlighted scars, lateral view (right). Scale bar is 5 mm. D. Oblique dorsal view of right valve, showing posterior tapering condition of ligament. Original photograph (top) vs. highlighted ligamental impression (bottom). Scale bar is 10 mm. E. Paratype L 4209, close up anterior view of the umbones showing details of the early shell. F. Specimen L 4568, dorsal area of right valve, showing well preserved striations of the fibrous layer of the ligament. Scar bar is 2 mm. apb: scar of anterior part of posterior byssal retractor; fl: fibrous layer of ligament; lig: ligament; lv: left valve; pa: scar of posterior adductor; pl: pallial line; ppb: scar of posterior part of posterior byssal retractor; rv: right valve; sh: shell." pageId="20" pageNumber="21">Fig. 9</figureCitation>
|
||
E), from Rocky Knob; one medium sized, L4215 (
|
||
<figureCitation id="A4A82A33BF42FA5D655DF819FC6AF801" box="[835,905,1970,1996]" captionStart="FIGURE 8" captionStartId="21.[151,255,1658,1682]" captionTargetBox="[151,1436,197,1644]" captionTargetId="figure@21.[151,1436,197,1645]" captionTargetPageId="21" captionText="FIGURE 8. Growth series and holotype of Gigantidas coseli sp. nov. A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A. 1. Paratype L 4204. A. 2. Paratype TM 8750. A. 3. Specimen L 4563. A. 4. Paratype L 4215. A. 5. Specimen L 4561. A. 6. Holotype L 4203. A. 7. Specimen L 4211. B. Diagnostic views of holotype L 4203. Scale bar is 10 mm. B. 1. Anterior view. B. 2. Dorsal view. B. 3. Lateral view of left valve. B. 4. Lateral view of right valve." httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="20" pageNumber="21">Fig. 8</figureCitation>
|
||
A.4), from Tauwhareparae. All specimens at
|
||
<collectionCode id="5A82AE73BF42FA5D6689F873FF3AF83F" box="[151,217,2008,2034]" httpUri="http://grbio.org/cool/0hg2-xg9x" name="UOA/HCPF University of Athens/Hellenic Collection of Pathogenic Fungi" pageId="20" pageNumber="21">UOA</collectionCode>
|
||
, two borrowed from GNS. See Table 6 for dimensions.
|
||
</paragraph>
|
||
<caption id="68EC663EBF43FA5C6689F9D1FEF2F8DF" httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="21" pageNumber="22" targetBox="[151,1436,197,1644]" targetPageId="21">
|
||
<paragraph id="3C2C36B6BF43FA5C6689F9D1FEF2F8DF" blockId="21.[151,1436,1658,1810]" pageId="21" pageNumber="22">
|
||
<emphasis id="0EE7EAA4BF43FA5C6689F9D1FEFAF95F" bold="true" box="[151,281,1658,1682]" pageId="21" pageNumber="22">FIGURE 8.</emphasis>
|
||
Growth series and holotype of
|
||
<taxonomicName id="FB934D35BF43FA5C6479F9D0FCC1F95F" box="[615,802,1659,1682]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="21" pageNumber="22" phylum="Mollusca" rank="species" species="coseli" status="sp. nov.">
|
||
<emphasis id="0EE7EAA4BF43FA5C6479F9D0FCC1F95F" box="[615,802,1659,1682]" italics="true" pageId="21" pageNumber="22">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="15D457DFBF43FA5C6537F9D1FC9DF95F" box="[809,894,1658,1682]" pageId="21" pageNumber="22" rank="species">
|
||
<emphasis id="0EE7EAA4BF43FA5C6537F9D1FC9DF95F" bold="true" box="[809,894,1658,1682]" pageId="21" pageNumber="22">sp. nov.</emphasis>
|
||
</taxonomicNameLabel>
|
||
A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A.1. Paratype L4204. A.2. Paratype TM8750. A.3. Specimen L4563. A.4. Paratype L4215. A.5. Specimen L4561. A.6. Holotype L4203. A.7. Specimen L4211. B. Diagnostic views of holotype L4203. Scale bar is 10 mm. B.1. Anterior view. B.2. Dorsal view. B.3. Lateral view of left valve. B.4. Lateral view of right valve.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="3C2C36B6BF43FA5C66D8F8EBFAF9F807" blockId="21.[151,1436,1856,2031]" pageId="21" pageNumber="22">
|
||
<emphasis id="0EE7EAA4BF43FA5C66D8F8EBFE69F897" bold="true" box="[198,394,1856,1882]" pageId="21" pageNumber="22">Other material.</emphasis>
|
||
22 poorly to moderately preserved small to large specimens: one from Bexhaven (Y16/ f1032); 14 from Moonlight North (Y16/f1033, Y16/f1054); one (tentatively assigned) from Puketawa (Y16/ f0580), four from Rocky Knob (Y16/f1036, Y16/f1043, Y16/f1047), two from Turihaua (Y18/f0372). All specimens at
|
||
<collectionCode id="5A82AE73BF43FA5C672BF81BFE9BF807" box="[309,376,1968,1994]" httpUri="http://grbio.org/cool/0hg2-xg9x" name="UOA/HCPF University of Athens/Hellenic Collection of Pathogenic Fungi" pageId="21" pageNumber="22">UOA</collectionCode>
|
||
, three borrowed from GNS. See Appendix I for dimensions and specimen data.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="7489653DBF43FA5C66D8F87EFA82F822" box="[198,1377,2005,2031]" pageId="21" pageNumber="22" type="etymology">
|
||
<paragraph id="3C2C36B6BF43FA5C66D8F87EFA82F822" blockId="21.[151,1436,1856,2031]" box="[198,1377,2005,2031]" pageId="21" pageNumber="22">
|
||
<emphasis id="0EE7EAA4BF43FA5C66D8F87EFEB0F822" bold="true" box="[198,339,2005,2031]" pageId="21" pageNumber="22">Etymology.</emphasis>
|
||
Named for Dr. Rudo von Cosel, a leading researcher in vent and seep mussel taxonomy.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="7489653DBF41FA5E66D8FF3CFB25FF31" pageId="23" pageNumber="24" type="diagnosis">
|
||
<paragraph id="3C2C36B6BF41FA5E66D8FF3CFB25FF31" blockId="23.[151,1436,151,252]" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E66D8FF3CFEA5FF7C" bold="true" box="[198,326,151,177]" pageId="23" pageNumber="24">Diagnosis.</emphasis>
|
||
Shell small for genus (L up to 99.0 mm); umbones subterminal, anterior, at 6–18% along shell length; anterior portion rather protrusive anteriorly; ligament ending in gentle taper in adult; subligamental ridge visible from lateral and ventral perspectives; posterior adductor scar moderate in size.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<paragraph id="3C2C36B6BF41FA5E6689FE87FAABFD3A" pageId="23" pageNumber="24">
|
||
<table id="4E93C416BF4105B66689FE87FAA9FD3A" box="[151,1354,300,759]" gridcols="8" gridrows="11" pageId="23" pageNumber="24">
|
||
<tr id="82A334F4BF4105B66689FE87FAA9FE89" box="[151,1354,300,324]" gridrow="0" pageId="23" pageNumber="24">
|
||
<th id="C1725D88BF4105B66689FE87FEEBFE89" box="[151,264,300,324]" gridcol="0" gridrow="0" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E6689FE87FEEBFE89" bold="true" box="[151,264,300,324]" pageId="23" pageNumber="24">TABLE 6.</emphasis>
|
||
</th>
|
||
<th id="C1725D88BF4105B6670EFE87FDE9FE89" box="[272,522,300,324]" gridcol="1" gridrow="0" pageId="23" pageNumber="24">Selected measurements</th>
|
||
<th id="C1725D88BF4105B6640FFE87FD7FFE89" box="[529,668,300,324]" gridcol="2" gridrow="0" pageId="23" pageNumber="24">of specimens</th>
|
||
<th id="C1725D88BF4105B664BDFE87FD5AFE89" box="[675,697,300,324]" gridcol="3" gridrow="0" pageId="23" pageNumber="24">of</th>
|
||
<th id="C1725D88BF4105B664DEFE87FC98FE89" box="[704,891,300,324]" gridcol="4" gridrow="0" pageId="23" pageNumber="24">
|
||
<taxonomicName id="FB934D35BF41FA5E64DEFE86FC98FE89" box="[704,891,301,324]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="23" pageNumber="24" phylum="Mollusca" rank="species" species="coseli">
|
||
<emphasis id="0EE7EAA4BF41FA5E64DEFE86FC98FE89" box="[704,891,301,324]" italics="true" pageId="23" pageNumber="24">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th id="C1725D88BF4105B6659CFE87FC41FE89" box="[898,930,300,324]" gridcol="5" gridrow="0" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E659CFE87FC41FE89" bold="true" box="[898,930,300,324]" pageId="23" pageNumber="24">sp.</emphasis>
|
||
</th>
|
||
<th id="C1725D88BF4105B665B7FE87FB6FFE89" box="[937,1164,300,324]" gridcol="6" gridrow="0" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E65B7FE87FC3BFE89" bold="true" box="[937,984,300,324]" pageId="23" pageNumber="24">nov.</emphasis>
|
||
Italicized values
|
||
</th>
|
||
<th id="C1725D88BF4105B6628DFE87FAA9FE89" box="[1171,1354,300,324]" gridcol="7" gridrow="0" pageId="23" pageNumber="24">are approximate.</th>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FECBFAA9FEBA" box="[151,1354,352,375]" gridrow="1" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FECBFEEBFEBA" box="[151,264,352,375]" gridcol="0" gridrow="1" pageId="23" pageNumber="24">Specimen</th>
|
||
<td id="C1725D88BF4105B6670EFECBFDE9FEBA" box="[272,522,352,375]" gridcol="1" gridrow="1" pageId="23" pageNumber="24">Type A</td>
|
||
<td id="C1725D88BF4105B6640FFECBFD7FFEBA" box="[529,668,352,375]" gridcol="2" gridrow="1" pageId="23" pageNumber="24">H</td>
|
||
<td id="C1725D88BF4105B664DEFECBFC98FEBA" box="[704,891,352,375]" gridcol="4" gridrow="1" pageId="23" pageNumber="24">I L</td>
|
||
<td id="C1725D88BF4105B665B7FECBFB6FFEBA" box="[937,1164,352,375]" gridcol="6" gridrow="1" pageId="23" pageNumber="24">H/L L/H</td>
|
||
<td id="C1725D88BF4105B6628DFECBFAA9FEBA" box="[1171,1354,352,375]" gridcol="7" gridrow="1" pageId="23" pageNumber="24">U Site</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FE21FAA9FE6C" box="[151,1354,394,417]" gridrow="2" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FE21FEEBFE6C" box="[151,264,394,417]" gridcol="0" gridrow="2" pageId="23" pageNumber="24">L4203</th>
|
||
<td id="C1725D88BF4105B6670EFE21FDE9FE6C" box="[272,522,394,417]" gridcol="1" gridrow="2" pageId="23" pageNumber="24">Holotype 9.9</td>
|
||
<td id="C1725D88BF4105B6640FFE21FD7FFE6C" box="[529,668,394,417]" gridcol="2" gridrow="2" pageId="23" pageNumber="24">25.2</td>
|
||
<td id="C1725D88BF4105B664DEFE21FC98FE6C" box="[704,891,394,417]" gridcol="4" gridrow="2" pageId="23" pageNumber="24">23.4 92.3</td>
|
||
<td id="C1725D88BF4105B665B7FE21FB6FFE6C" box="[937,1164,394,417]" gridcol="6" gridrow="2" pageId="23" pageNumber="24">0.27 3.66</td>
|
||
<td id="C1725D88BF4105B6628DFE21FAA9FE6C" box="[1171,1354,394,417]" gridcol="7" gridrow="2" pageId="23" pageNumber="24">12% MN</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FE1EFAA9FE01" box="[151,1354,437,460]" gridrow="3" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FE1EFEEBFE01" box="[151,264,437,460]" gridcol="0" gridrow="3" pageId="23" pageNumber="24">TM8749</th>
|
||
<td id="C1725D88BF4105B6670EFE1EFDE9FE01" box="[272,522,437,460]" gridcol="1" gridrow="3" pageId="23" pageNumber="24">Paratype 4.7</td>
|
||
<td id="C1725D88BF4105B6640FFE1EFD7FFE01" box="[529,668,437,460]" gridcol="2" gridrow="3" pageId="23" pageNumber="24">15.1</td>
|
||
<td id="C1725D88BF4105B664DEFE1EFC98FE01" box="[704,891,437,460]" gridcol="4" gridrow="3" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E64DBFE1EFD10FE01" box="[709,755,437,460]" italics="true" pageId="23" pageNumber="24">14.6</emphasis>
|
||
55.8
|
||
</td>
|
||
<td id="C1725D88BF4105B665B7FE1EFB6FFE01" box="[937,1164,437,460]" gridcol="6" gridrow="3" pageId="23" pageNumber="24">0.27 3.70</td>
|
||
<td id="C1725D88BF4105B6628DFE1EFAA9FE01" box="[1171,1354,437,460]" gridcol="7" gridrow="3" pageId="23" pageNumber="24">8% MN</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FE4BFAA9FE3A" box="[151,1354,480,503]" gridrow="4" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FE4BFEEBFE3A" box="[151,264,480,503]" gridcol="0" gridrow="4" pageId="23" pageNumber="24">TM8750</th>
|
||
<td id="C1725D88BF4105B6670EFE4BFDE9FE3A" box="[272,522,480,503]" gridcol="1" gridrow="4" pageId="23" pageNumber="24">Paratype 6.1</td>
|
||
<td id="C1725D88BF4105B6640FFE4BFD7FFE3A" box="[529,668,480,503]" gridcol="2" gridrow="4" pageId="23" pageNumber="24">11.1</td>
|
||
<td id="C1725D88BF4105B664DEFE4BFC98FE3A" box="[704,891,480,503]" gridcol="4" gridrow="4" pageId="23" pageNumber="24">9.0 34.8</td>
|
||
<td id="C1725D88BF4105B665B7FE4BFB6FFE3A" box="[937,1164,480,503]" gridcol="6" gridrow="4" pageId="23" pageNumber="24">0.32 3.14</td>
|
||
<td id="C1725D88BF4105B6628DFE4BFAA9FE3A" box="[1171,1354,480,503]" gridcol="7" gridrow="4" pageId="23" pageNumber="24">18% BX</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FDA1FAA9FDEC" box="[151,1354,522,545]" gridrow="5" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FDA1FEEBFDEC" box="[151,264,522,545]" gridcol="0" gridrow="5" pageId="23" pageNumber="24">L4560</th>
|
||
<td id="C1725D88BF4105B6670EFDA1FDE9FDEC" box="[272,522,522,545]" gridcol="1" gridrow="5" pageId="23" pageNumber="24">Paratype 8.8</td>
|
||
<td id="C1725D88BF4105B6640FFDA1FD7FFDEC" box="[529,668,522,545]" gridcol="2" gridrow="5" pageId="23" pageNumber="24">24.4</td>
|
||
<td id="C1725D88BF4105B664DEFDA1FC98FDEC" box="[704,891,522,545]" gridcol="4" gridrow="5" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E64DBFDA1FD10FDEC" box="[709,755,522,545]" italics="true" pageId="23" pageNumber="24">16.8</emphasis>
|
||
77.7
|
||
</td>
|
||
<td id="C1725D88BF4105B665B7FDA1FB6FFDEC" box="[937,1164,522,545]" gridcol="6" gridrow="5" pageId="23" pageNumber="24">0.31 3.18</td>
|
||
<td id="C1725D88BF4105B6628DFDA1FAA9FDEC" box="[1171,1354,522,545]" gridcol="7" gridrow="5" pageId="23" pageNumber="24">11% MN</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FD9EFAA9FD81" box="[151,1354,565,588]" gridrow="6" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FD9EFEEBFD81" box="[151,264,565,588]" gridcol="0" gridrow="6" pageId="23" pageNumber="24">L4210</th>
|
||
<td id="C1725D88BF4105B6670EFD9EFDE9FD81" box="[272,522,565,588]" gridcol="1" gridrow="6" pageId="23" pageNumber="24">Paratype 11.9</td>
|
||
<td id="C1725D88BF4105B6640FFD9EFD7FFD81" box="[529,668,565,588]" gridcol="2" gridrow="6" pageId="23" pageNumber="24">27.6</td>
|
||
<td id="C1725D88BF4105B664DEFD9EFC98FD81" box="[704,891,565,588]" gridcol="4" gridrow="6" pageId="23" pageNumber="24">22.2 91.9</td>
|
||
<td id="C1725D88BF4105B665B7FD9EFB6FFD81" box="[937,1164,565,588]" gridcol="6" gridrow="6" pageId="23" pageNumber="24">0.30 3.33</td>
|
||
<td id="C1725D88BF4105B6628DFD9EFAA9FD81" box="[1171,1354,565,588]" gridcol="7" gridrow="6" pageId="23" pageNumber="24">13% MN</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FDCBFAA9FDBA" box="[151,1354,608,631]" gridrow="7" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FDCBFEEBFDBA" box="[151,264,608,631]" gridcol="0" gridrow="7" pageId="23" pageNumber="24">L4213</th>
|
||
<td id="C1725D88BF4105B6670EFDCBFDE9FDBA" box="[272,522,608,631]" gridcol="1" gridrow="7" pageId="23" pageNumber="24">
|
||
Paratype
|
||
<emphasis id="0EE7EAA4BF41FA5E67D0FDCBFE1BFDBA" box="[462,504,608,631]" italics="true" pageId="23" pageNumber="24">11.4</emphasis>
|
||
</td>
|
||
<td id="C1725D88BF4105B6640FFDCBFD7FFDBA" box="[529,668,608,631]" gridcol="2" gridrow="7" pageId="23" pageNumber="24">23.3</td>
|
||
<td id="C1725D88BF4105B664DEFDCBFC98FDBA" box="[704,891,608,631]" gridcol="4" gridrow="7" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E64DBFDCBFD10FDBA" box="[709,755,608,631]" italics="true" pageId="23" pageNumber="24">26.0</emphasis>
|
||
91.3
|
||
</td>
|
||
<td id="C1725D88BF4105B665B7FDCBFB6FFDBA" box="[937,1164,608,631]" gridcol="6" gridrow="7" pageId="23" pageNumber="24">0.26 3.92</td>
|
||
<td id="C1725D88BF4105B6628DFDCBFAA9FDBA" box="[1171,1354,608,631]" gridcol="7" gridrow="7" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E62ABFDCBFB05FDBA" box="[1205,1254,608,631]" italics="true" pageId="23" pageNumber="24">12%</emphasis>
|
||
MN
|
||
</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FD21FAA9FD6C" box="[151,1354,650,673]" gridrow="8" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FD21FEEBFD6C" box="[151,264,650,673]" gridcol="0" gridrow="8" pageId="23" pageNumber="24">L4204</th>
|
||
<td id="C1725D88BF4105B6670EFD21FDE9FD6C" box="[272,522,650,673]" gridcol="1" gridrow="8" pageId="23" pageNumber="24">
|
||
Paratype
|
||
<emphasis id="0EE7EAA4BF41FA5E67D0FD21FE0CFD6C" box="[462,495,650,673]" italics="true" pageId="23" pageNumber="24">2.5</emphasis>
|
||
</td>
|
||
<td id="C1725D88BF4105B6640FFD21FD7FFD6C" box="[529,668,650,673]" gridcol="2" gridrow="8" pageId="23" pageNumber="24">7.7</td>
|
||
<td id="C1725D88BF4105B664DEFD21FC98FD6C" box="[704,891,650,673]" gridcol="4" gridrow="8" pageId="23" pageNumber="24">6.2 22.1</td>
|
||
<td id="C1725D88BF4105B665B7FD21FB6FFD6C" box="[937,1164,650,673]" gridcol="6" gridrow="8" pageId="23" pageNumber="24">0.35 2.87</td>
|
||
<td id="C1725D88BF4105B6628DFD21FAA9FD6C" box="[1171,1354,650,673]" gridcol="7" gridrow="8" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E62ABFD21FB02FD6C" box="[1205,1249,650,673]" italics="true" pageId="23" pageNumber="24">11%</emphasis>
|
||
RK
|
||
</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FD1EFAA9FD01" box="[151,1354,693,716]" gridrow="9" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FD1EFEEBFD01" box="[151,264,693,716]" gridcol="0" gridrow="9" pageId="23" pageNumber="24">L4209</th>
|
||
<td id="C1725D88BF4105B6670EFD1EFDE9FD01" box="[272,522,693,716]" gridcol="1" gridrow="9" pageId="23" pageNumber="24">Paratype 6.1</td>
|
||
<td id="C1725D88BF4105B6640FFD1EFD7FFD01" box="[529,668,693,716]" gridcol="2" gridrow="9" pageId="23" pageNumber="24">14.9</td>
|
||
<td id="C1725D88BF4105B664DEFD1EFC98FD01" box="[704,891,693,716]" gridcol="4" gridrow="9" pageId="23" pageNumber="24">13.0 49.4</td>
|
||
<td id="C1725D88BF4105B665B7FD1EFB6FFD01" box="[937,1164,693,716]" gridcol="6" gridrow="9" pageId="23" pageNumber="24">0.30 3.32</td>
|
||
<td id="C1725D88BF4105B6628DFD1EFAA9FD01" box="[1171,1354,693,716]" gridcol="7" gridrow="9" pageId="23" pageNumber="24">12% RK</td>
|
||
</tr>
|
||
<tr id="82A334F4BF4105B66689FD4BFAA9FD3A" box="[151,1354,736,759]" gridrow="10" pageId="23" pageNumber="24" rowspan-3="1" rowspan-5="1">
|
||
<th id="C1725D88BF4105B66689FD4BFEEBFD3A" box="[151,264,736,759]" gridcol="0" gridrow="10" pageId="23" pageNumber="24">L4215</th>
|
||
<td id="C1725D88BF4105B6670EFD4BFDE9FD3A" box="[272,522,736,759]" gridcol="1" gridrow="10" pageId="23" pageNumber="24">Paratype 7.1</td>
|
||
<td id="C1725D88BF4105B6640FFD4BFD7FFD3A" box="[529,668,736,759]" gridcol="2" gridrow="10" pageId="23" pageNumber="24">17.5</td>
|
||
<td id="C1725D88BF4105B664DEFD4BFC98FD3A" box="[704,891,736,759]" gridcol="4" gridrow="10" pageId="23" pageNumber="24">
|
||
16.2
|
||
<emphasis id="0EE7EAA4BF41FA5E6522FD4BFC88FD3A" box="[828,875,736,759]" italics="true" pageId="23" pageNumber="24">61.0</emphasis>
|
||
</td>
|
||
<td id="C1725D88BF4105B665B7FD4BFB6FFD3A" box="[937,1164,736,759]" gridcol="6" gridrow="10" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E65ADFD4BFBBBFD3A" box="[947,1112,736,759]" italics="true" pageId="23" pageNumber="24">0.29 3.49</emphasis>
|
||
</td>
|
||
<td id="C1725D88BF4105B6628DFD4BFAA9FD3A" box="[1171,1354,736,759]" gridcol="7" gridrow="10" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E62ABFD4BFB05FD3A" box="[1205,1254,736,759]" italics="true" pageId="23" pageNumber="24">12%</emphasis>
|
||
TW
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
</paragraph>
|
||
<subSubSection id="7489653DBF41FA5066D8FC96FB06FD71" lastPageId="25" lastPageNumber="26" pageId="23" pageNumber="24" type="description">
|
||
<paragraph id="3C2C36B6BF41FA5066D8FC96FEEFFD81" blockId="23.[151,1437,829,1527]" lastBlockId="25.[151,1437,152,1932]" lastPageId="25" lastPageNumber="26" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E66D8FC96FEBCFC9A" bold="true" box="[198,351,829,855]" pageId="23" pageNumber="24">Description.</emphasis>
|
||
Shell small for genus (L up to 99.0 mm, H up to 34.0 mm*, I up to 27.0 mm), aduliform, rather thin (usually not preserved or expressed only in flaky patches), slender, becoming more elongate with growth, juvenile (L <
|
||
<quantity id="FB6B9B53BF41FA5E6782FC23FE12FC6F" box="[412,497,904,930]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="23" pageNumber="24" unit="mm" value="40.0">40 mm</quantity>
|
||
) H/L = 0.32–0.39, I/L = 0.26–0.34, adult H/L reaching 0.23, I/L reaching 0.18, equivalve, some specimens with valves slightly twisted against one another with left–right sense along anteroposterior axis (
|
||
<figureCitation id="A4A82A33BF41FA5E678DFC79FE39FC21" box="[403,474,978,1004]" captionStart="FIGURE 8" captionStartId="21.[151,255,1658,1682]" captionTargetBox="[151,1436,197,1644]" captionTargetId="figure@21.[151,1436,197,1645]" captionTargetPageId="21" captionText="FIGURE 8. Growth series and holotype of Gigantidas coseli sp. nov. A. Diagnostic lateral views of left and right valves to show growth series. Scale bar is 20 mm. A. 1. Paratype L 4204. A. 2. Paratype TM 8750. A. 3. Specimen L 4563. A. 4. Paratype L 4215. A. 5. Specimen L 4561. A. 6. Holotype L 4203. A. 7. Specimen L 4211. B. Diagnostic views of holotype L 4203. Scale bar is 10 mm. B. 1. Anterior view. B. 2. Dorsal view. B. 3. Lateral view of left valve. B. 4. Lateral view of right valve." httpUri="https://zenodo.org/record/197505/files/figure.png" pageId="23" pageNumber="24">Fig. 8</figureCitation>
|
||
B.2). Umbones subterminal, prosogyrate, anterior, in most specimens at 11–13% shell length throughout growth, in some becoming further anterior with increasing size, position more variable in smaller specimens than in larger specimens; umbonal region moderately elongated, moderately pronounced in adult, more angulated and distinct in juveniles, covering ca. 20–25% of dorsal length in adult, less in juveniles. Posterior angulation running from umbones to posterior end of ventral margin, becoming stronger with growth, somewhat sharply defined internally, more rounded externally, forming widest point of shell at about mid-length; in dorsal view, posterior angulation development causes increasing central bulging of shell with growth, tapering to posterior margin; much smaller anterior angulation runs from umbones to anterior margin, forming secondary anterior bulge in dorsal view, area between bulges slightly constricted in some of largest specimens; bulges less apparent in smaller specimens, which appear more uniformly fusiform in dorsal profile. Anterior portion of shell rather protrusive anteriorly. Anterior margin somewhat narrowly and evenly rounded; dorsal margin nearly straight in very small specimens, becoming gently convex in halfgrown specimens to rather convex in fully grown specimens; posterodorsal corner at point of greatest valve height, broadly rounded, indistinct to weakly angulated; posterior margin broadly and unevenly rounded, sloping ventrally; ventral margin nearly straight to weakly and more or less evenly convex in juvenile, specimens), strongly concave in adults, rather strongly convex along posterior third, straight (typically) or weakly convex in anterior quarter below umbo. External surface with irregular, well developed commarginal growth lines and waves; growth waves weakly reflected on interior, especially towards margins, strongest in posteroventral portion. Hinge and ligament plate unknown. Ligament extending over ca. 80–90% of dorsal margin, running from beaks to in front of posterodorsal corner, terminating posteriorly in gentle taper. Subligamental ridge well developed, running from behind beaks, becoming obsolete at 70–100% ligament length in direction diverging from dorsal margin towards point about two-thirds up on posterior margin, clearly visible from lateral perspective. Muscle scars faint (generally poorly preserved, known principally from three specimens,
|
||
<figureCitation id="A4A82A33BF4FFA5067B8FEF9FE1BFEA1" box="[422,504,338,364]" captionStart="FIGURE 9" captionStartId="23.[151,257,1604,1628]" captionText="FIGURE 9. Various shell features observed upon specimens of Gigantidas coseli sp. nov. A. Specimen L 4559, left valve, showing pallial line and separated anterior and (very faint) posterior portions of posterior byssal retractor scar. Original photograph (left) vs. highlighted scars (right). Scale bar is 5 mm. B. Specimen L 4562, posterior portion of internal right valve, showing growth lines within the moderate-sized posterior adductor muscle scar. Original photograph (left) vs. highlighted muscle scars (right). Scale bar is 10 mm. C, D. Paratype TM 8749. C. Posterior adductor scar and posterior portion of pallial line on internal left valve of half-grown shell. Original photograph, oblique lateral view (left) vs. highlighted scars, lateral view (right). Scale bar is 5 mm. D. Oblique dorsal view of right valve, showing posterior tapering condition of ligament. Original photograph (top) vs. highlighted ligamental impression (bottom). Scale bar is 10 mm. E. Paratype L 4209, close up anterior view of the umbones showing details of the early shell. F. Specimen L 4568, dorsal area of right valve, showing well preserved striations of the fibrous layer of the ligament. Scar bar is 2 mm. apb: scar of anterior part of posterior byssal retractor; fl: fibrous layer of ligament; lig: ligament; lv: left valve; pa: scar of posterior adductor; pl: pallial line; ppb: scar of posterior part of posterior byssal retractor; rv: right valve; sh: shell." pageId="25" pageNumber="26">Figs. 9</figureCitation>
|
||
A–C); anterior adductor and anterior byssal retractor scars unknown; posterior adductor scar of moderate size, situated at two-thirds of valve height in dorsal half, posterior limb rounded, united anterodorsally with posterior scar of posterior byssal retractor; anterior scar of posterior byssal retractor well separated, preserved in only one incomplete specimen with eroded dorsal margin, making relative position unclear, but roughly beneath third and last quarter of ligament; pallial line more or less parallel with ventral margin, at least in posterior half, anterior portion not preserved in any specimens. Larval shell unknown.
|
||
</paragraph>
|
||
<caption id="68EC663EBF41FA5E6689F9EFFABFF871" pageId="23" pageNumber="24">
|
||
<paragraph id="3C2C36B6BF41FA5E6689F9EFFABFF871" blockId="23.[151,1437,1604,1980]" pageId="23" pageNumber="24">
|
||
<emphasis id="0EE7EAA4BF41FA5E6689F9EFFEFDF991" bold="true" box="[151,286,1604,1628]" pageId="23" pageNumber="24">FIGURE 9.</emphasis>
|
||
Various shell features observed upon specimens of
|
||
<taxonomicName id="FB934D35BF41FA5E6541F9EEFBC1F991" box="[863,1058,1605,1628]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="23" pageNumber="24" phylum="Mollusca" rank="species" species="coseli" status="sp. nov.">
|
||
<emphasis id="0EE7EAA4BF41FA5E6541F9EEFBC1F991" box="[863,1058,1605,1628]" italics="true" pageId="23" pageNumber="24">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="15D457DFBF41FA5E6234F9EFFB60F991" box="[1066,1155,1604,1628]" pageId="23" pageNumber="24" rank="species">
|
||
<emphasis id="0EE7EAA4BF41FA5E6234F9EFFB60F991" bold="true" box="[1066,1155,1604,1628]" pageId="23" pageNumber="24">sp. nov.</emphasis>
|
||
</taxonomicNameLabel>
|
||
A. Specimen L4559, left valve, showing pallial line and separated anterior and (very faint) posterior portions of posterior byssal retractor scar. Original photograph (left) vs. highlighted scars (right). Scale bar is 5 mm. B. Specimen L4562, posterior portion of internal right valve, showing growth lines within the moderate-sized posterior adductor muscle scar. Original photograph (left) vs. highlighted muscle scars (right). Scale bar is 10 mm. C, D. Paratype TM8749. C. Posterior adductor scar and posterior portion of pallial line on internal left valve of half-grown shell. Original photograph, oblique lateral view (left) vs. highlighted scars, lateral view (right). Scale bar is 5 mm. D. Oblique dorsal view of right valve, showing posterior tapering condition of ligament. Original photograph (top) vs. highlighted ligamental impression (bottom). Scale bar is 10 mm. E. Paratype L4209, close up anterior view of the umbones showing details of the early shell. F. Specimen L4568, dorsal area of right valve, showing well preserved striations of the fibrous layer of the ligament. Scar bar is 2 mm. apb: scar of anterior part of posterior byssal retractor; fl: fibrous layer of ligament; lig: ligament; lv: left valve; pa: scar of posterior adductor; pl: pallial line; ppb: scar of posterior part of posterior byssal retractor; rv: right valve; sh: shell.
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="68EC663EBF4EFA516689F9A8FE56F897" httpUri="https://zenodo.org/record/197506/files/figure.png" pageId="24" pageNumber="25" targetBox="[154,1432,198,1517]" targetPageId="24">
|
||
<paragraph id="3C2C36B6BF4EFA516689F9A8FE56F897" blockId="24.[151,1437,1539,1882]" pageId="24" pageNumber="25">
|
||
<emphasis id="0EE7EAA4BF4EFA516689F9A8FEC8F9D6" bold="true" box="[151,299,1539,1563]" pageId="24" pageNumber="25">FIGURE 10.</emphasis>
|
||
Sketches of idealized internal right valves of adult specimens of
|
||
<taxonomicName id="FB934D35BF4EFA516217F9A8FAD7F9D7" box="[1033,1332,1539,1562]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="species" species="heretaunga" status="sp. nov.">
|
||
<emphasis id="0EE7EAA4BF4EFA516217F9A8FAD7F9D7" box="[1033,1332,1539,1562]" italics="true" pageId="24" pageNumber="25">Bathymodiolus heretaunga</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="15D457DFBF4EFA516322F9A8FA76F9D6" box="[1340,1429,1539,1563]" pageId="24" pageNumber="25" rank="species">
|
||
<emphasis id="0EE7EAA4BF4EFA516322F9A8FA76F9D6" bold="true" box="[1340,1429,1539,1563]" pageId="24" pageNumber="25">sp. nov.</emphasis>
|
||
</taxonomicNameLabel>
|
||
,
|
||
<taxonomicName id="FB934D35BF4EFA516689F988FEB1F9F7" box="[151,338,1571,1594]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="species" species="coseli" status="sp. nov.">
|
||
<emphasis id="0EE7EAA4BF4EFA516689F988FEB1F9F7" box="[151,338,1571,1594]" italics="true" pageId="24" pageNumber="25">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="15D457DFBF4EFA516747F988FE4CF9F6" box="[345,431,1571,1595]" pageId="24" pageNumber="25" rank="species">
|
||
<emphasis id="0EE7EAA4BF4EFA516747F988FE4CF9F6" bold="true" box="[345,431,1571,1595]" pageId="24" pageNumber="25">sp. nov.</emphasis>
|
||
</taxonomicNameLabel>
|
||
, and the two named modern species of
|
||
<taxonomicName id="FB934D35BF4EFA516546F988FAE8F9F7" authority="Cosel and B. Marshall, 2003" authorityName="Cosel and B. Marshall" authorityYear="2003" box="[856,1291,1571,1594]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="genus">
|
||
<emphasis id="0EE7EAA4BF4EFA516546F988FC2CF9F7" box="[856,975,1571,1594]" italics="true" pageId="24" pageNumber="25">Gigantidas</emphasis>
|
||
Cosel and B. Marshall, 2003
|
||
</taxonomicName>
|
||
. Not to scale. A.
|
||
<taxonomicName id="FB934D35BF4EFA5166A6F9E8FEAEF997" box="[184,333,1603,1626]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="species" species="heretaunga">
|
||
<emphasis id="0EE7EAA4BF4EFA5166A6F9E8FEAEF997" box="[184,333,1603,1626]" italics="true" pageId="24" pageNumber="25">B. heretaunga</emphasis>
|
||
</taxonomicName>
|
||
. B.
|
||
<emphasis id="0EE7EAA4BF4EFA516765F9E8FE30F997" box="[379,467,1603,1626]" italics="true" pageId="24" pageNumber="25">G. c o s e l i</emphasis>
|
||
. C.
|
||
<taxonomicName id="FB934D35BF4EFA51641DF9E8FBEFF997" authority="Cosel and B. Marshall, 2003" authorityName="Cosel and B. Marshall" authorityYear="2003" box="[515,1036,1603,1626]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4EFA51641DF9E8FD33F997" box="[515,720,1603,1626]" italics="true" pageId="24" pageNumber="25">Gigantidas gladius</emphasis>
|
||
Cosel and B. Marshall, 2003
|
||
</taxonomicName>
|
||
. D.
|
||
<taxonomicName id="FB934D35BF4EFA516228F9E8FE8AF9B7" authority="Hashimoto and Yamane, 2005" authorityName="Hashimoto and Yamane" authorityYear="2005" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="24" pageNumber="25" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4EFA516228F9E8FAC3F997" box="[1078,1312,1603,1626]" italics="true" pageId="24" pageNumber="25">Gigantidas horikoshii</emphasis>
|
||
Hashimoto and Yamane, 2005
|
||
</taxonomicName>
|
||
. A and B based on holotype shell shapes but constructed as composites from details observed in several specimens for both new species. Features unknown in
|
||
<emphasis id="0EE7EAA4BF4EFA516535F928FC61F957" box="[811,898,1667,1690]" italics="true" pageId="24" pageNumber="25">G. c o s e l i</emphasis>
|
||
are estimated from those typical of the genus, and are drawn as dashed lines. C and D modified from Cosel and Marshall (2003: fig. 33) and Hashimoto and Yamane (2005: fig. 9) respectively. A: shell anterior length; aa: scar of anterior adductor; abr: scar of anterior byssal retractor; am: anterior margin; apb: scar of anterior part of posterior byssal retractor; b: beak; dm: dorsal margin; H: shell height; L: shell length; lig: ligament; pa: scar of posterior adductor; pbr: scar of posterior byssal retractor complex; pdc: posterodorsal corner; pl: pallial line; pm: posterior margin; ppb: scar of posterior part of posterior byssal retractor; u: umbo; vm: ventral margin.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="3C2C36B6BF4FFA5066D8FDF3FB06FD71" blockId="25.[151,1437,152,1932]" pageId="25" pageNumber="26">
|
||
* Measured in an incomplete internal mould comprising the largest posterior portion of any specimen in the collections, which, if assumed to be from a shell of typical overall shape, would reach a length of at least
|
||
<quantity id="FB6B9B53BF4FFA506689FD09FED5FD71" box="[151,310,674,700]" metricMagnitude="-1" metricUnit="m" metricValue="1.35" metricValueMax="1.5" metricValueMin="1.2" pageId="25" pageNumber="26" unit="mm" value="135.0" valueMax="150.0" valueMin="120.0">120–150 mm</quantity>
|
||
, especially with consideration of the trend of increasing elongation with growth.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="7489653DBF4FFA5066D8FD6CFDF4F9AF" pageId="25" pageNumber="26" type="discussion">
|
||
<paragraph id="3C2C36B6BF4FFA5066D8FD6CFDF4F9AF" blockId="25.[151,1437,152,1932]" pageId="25" pageNumber="26">
|
||
<emphasis id="0EE7EAA4BF4FFA5066D8FD6CFEDCFD2C" bold="true" box="[198,319,711,737]" pageId="25" pageNumber="26">Remarks.</emphasis>
|
||
<taxonomicName id="FB934D35BF4FFA506756FD63FE28FD2C" box="[328,459,712,737]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="genus">
|
||
<emphasis id="0EE7EAA4BF4FFA506756FD63FE28FD2C" box="[328,459,712,737]" italics="true" pageId="25" pageNumber="26">Gigantidas</emphasis>
|
||
</taxonomicName>
|
||
is a recently erected genus with only two species (both modern) so far described. Although the group is largely based upon anatomical features, several shell characteristics can be used to justify inclusion of the new species there, including shell elongation and overall shape, umbonal placement, position of the posterior adductor muscle scar, fusion of the posterior adductor muscle scar with the posterior scar of the posterior byssal retractor, and the widely separated anterior part of the posterior byssal retractor scar. Of the two modern species,
|
||
<emphasis id="0EE7EAA4BF4FFA506433FC29FD71FC56" box="[557,658,898,923]" italics="true" pageId="25" pageNumber="26">G. c o s e l i</emphasis>
|
||
resembles
|
||
<taxonomicName id="FB934D35BF4FFA506501FC29FC79FC56" box="[799,922,898,923]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA506501FC29FC79FC56" box="[799,922,898,923]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
in lateral view and
|
||
<taxonomicName id="FB934D35BF4FFA506293FC29FACAFC56" box="[1165,1321,898,923]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506293FC29FACAFC56" box="[1165,1321,898,923]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
in dorsal view.
|
||
<taxonomicName id="FB934D35BF4FFA5066C3FC03FE4EFC0C" box="[221,429,936,961]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="coseli">
|
||
<emphasis id="0EE7EAA4BF4FFA5066C3FC03FE4EFC0C" box="[221,429,936,961]" italics="true" pageId="25" pageNumber="26">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
is less elongate than
|
||
<taxonomicName id="FB934D35BF4FFA5064B5FC03FCC0FC0C" box="[683,803,936,961]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA5064B5FC03FCC0FC0C" box="[683,803,936,961]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and more elongate than
|
||
<taxonomicName id="FB934D35BF4FFA506256FC03FB03FC0C" box="[1096,1248,936,961]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506256FC03FB03FC0C" box="[1096,1248,936,961]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
, and the largest specimens of
|
||
<emphasis id="0EE7EAA4BF4FFA506726FC66FE7BFC2B" box="[312,408,973,998]" italics="true" pageId="25" pageNumber="26">G. c o s e l i</emphasis>
|
||
are significantly smaller than both. The umbones are somewhat more anteriorly placed than in
|
||
<taxonomicName id="FB934D35BF4FFA5066EDFC59FE8EFBC6" box="[243,365,1010,1035]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA5066EDFC59FE8EFBC6" box="[243,365,1010,1035]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA5067B6FC59FDA7FBC6" box="[424,580,1010,1035]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA5067B6FC59FDA7FBC6" box="[424,580,1010,1035]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
. The posterior angulation runs at a steeper angle over the shell than
|
||
<taxonomicName id="FB934D35BF4FFA50639DFC59FF11FBFC" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA50639DFC59FF11FBFC" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA50672EFBB3FE32FBFC" box="[304,465,1048,1073]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA50672EFBB3FE32FBFC" box="[304,465,1048,1073]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
, its termination occurring in a more anteroventral shell location. The anterior angulation is less pronounced than
|
||
<taxonomicName id="FB934D35BF4FFA506455FB96FD2BFB9B" box="[587,712,1085,1110]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA506455FB96FD2BFB9B" box="[587,712,1085,1110]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
, the dorsal profile with a weaker secondary anterior bulge similar to that of
|
||
<taxonomicName id="FB934D35BF4FFA506741FBC8FE15FBB1" box="[351,502,1123,1148]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506741FBC8FE15FBB1" box="[351,502,1123,1148]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
. The anterior part of the shell is less protrusive anteriorly than in
|
||
<taxonomicName id="FB934D35BF4FFA5062EAFBC8FA89FBB1" box="[1268,1386,1123,1148]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA5062EAFBC8FA89FBB1" box="[1268,1386,1123,1148]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA506689FB23FEDBFB6C" box="[151,312,1160,1185]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506689FB23FEDBFB6C" box="[151,312,1160,1185]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
because of the more anteriorly situated umbones, and the anterior margin is less narrowly rounded than in both
|
||
<taxonomicName id="FB934D35BF4FFA50678BFB06FDEEFB0B" box="[405,525,1197,1222]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA50678BFB06FDEEFB0B" box="[405,525,1197,1222]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA506456FB06FD03FB0B" box="[584,736,1197,1222]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506456FB06FD03FB0B" box="[584,736,1197,1222]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
. The ligament ends in a gentle taper posteriorly in adult
|
||
<taxonomicName id="FB934D35BF4FFA50639DFB06FF38FB21" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="coseli">
|
||
<emphasis id="0EE7EAA4BF4FFA50639DFB06FF38FB21" italics="true" pageId="25" pageNumber="26">G. coseli</emphasis>
|
||
</taxonomicName>
|
||
, unlike
|
||
<emphasis id="0EE7EAA4BF4FFA506724FB78FE4EFB21" box="[314,429,1235,1260]" italics="true" pageId="25" pageNumber="26">G. g l a d i u s</emphasis>
|
||
in which the termination is abrupt or has a short taper, and
|
||
<emphasis id="0EE7EAA4BF4FFA506278FB78FB19FB21" box="[1126,1274,1235,1260]" italics="true" pageId="25" pageNumber="26">G. h o r i k o s h i i</emphasis>
|
||
in which it is abrupt, although it is weakly tapered in smaller specimens of
|
||
<taxonomicName id="FB934D35BF4FFA50659BFB53FBC2FADC" box="[901,1057,1272,1297]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA50659BFB53FBC2FADC" box="[901,1057,1272,1297]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
. The subligamental ridge of
|
||
<taxonomicName id="FB934D35BF4FFA50639DFB53FF3DFAFB" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="coseli">
|
||
<emphasis id="0EE7EAA4BF4FFA50639DFB53FF3DFAFB" italics="true" pageId="25" pageNumber="26">G. coseli</emphasis>
|
||
</taxonomicName>
|
||
is strong like in
|
||
<emphasis id="0EE7EAA4BF4FFA5067B5FAB6FDC1FAFB" box="[427,546,1309,1334]" italics="true" pageId="25" pageNumber="26">G. g l a d i u s</emphasis>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA50647CFAB6FD1DFAFB" box="[610,766,1309,1334]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA50647CFAB6FD1DFAFB" box="[610,766,1309,1334]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
, but oriented more divergently from the dorsal margin, allowing it to be seen from the lateral perspective, unlike in
|
||
<taxonomicName id="FB934D35BF4FFA506579FAE8FC3CFA91" box="[871,991,1347,1372]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA506579FAE8FC3CFA91" box="[871,991,1347,1372]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA506204FAE8FB57FA91" box="[1050,1204,1347,1372]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506204FAE8FB57FA91" box="[1050,1204,1347,1372]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
, in which it is only visible from the ventral perspective. The posterior adductor scar is smaller relative to the shell compared with that of
|
||
<taxonomicName id="FB934D35BF4FFA5066F4FA26FE82FA6B" box="[234,353,1421,1446]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA5066F4FA26FE82FA6B" box="[234,353,1421,1446]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA506784FA26FDD1FA6B" box="[410,562,1421,1446]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA506784FA26FDD1FA6B" box="[410,562,1421,1446]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
. Morphometric analysis supports a closer relation of the new species to
|
||
<taxonomicName id="FB934D35BF4FFA50639DFA26FF0DFA01" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA50639DFA26FF0DFA01" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
than
|
||
<taxonomicName id="FB934D35BF4FFA50672FFA18FE29FA01" box="[305,458,1459,1484]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA50672FFA18FE29FA01" box="[305,458,1459,1484]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
, with the ontogenetic height vs. length curve of the smaller
|
||
<emphasis id="0EE7EAA4BF4FFA506284FA18FB18FA01" box="[1178,1275,1459,1484]" italics="true" pageId="25" pageNumber="26">G. c o s e l i</emphasis>
|
||
appearing to align with that of the larger
|
||
<taxonomicName id="FB934D35BF4FFA5067FAFA73FDBFFA3C" box="[484,604,1496,1521]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="gladius">
|
||
<emphasis id="0EE7EAA4BF4FFA5067FAFA73FDBFFA3C" box="[484,604,1496,1521]" italics="true" pageId="25" pageNumber="26">G. gladius</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="A4A82A33BF4FFA506473FA73FD27FA3F" box="[621,708,1496,1522]" captionStart="FIGURE 11" captionStartId="26.[151,255,1639,1663]" captionTargetBox="[151,1436,200,1617]" captionTargetId="figure@26.[151,1436,197,1618]" captionTargetPageId="26" captionText="FIGURE 11. Scatter plot with lines of best fit showing ontogenetic changes in shell height vs. shell length (A) and shell height / length ratio vs. shell length (B) in specimens of Gigantidas coseli sp. nov. and its modern congeners.: G. c os e li;: G. gladius Cosel and B. Marshall, 2003;: G. horikoshii Hashimoto and Yamane, 2005." httpUri="https://zenodo.org/record/197507/files/figure.png" pageId="25" pageNumber="26">Fig. 11</figureCitation>
|
||
). The growth curve of
|
||
<taxonomicName id="FB934D35BF4FFA5065C8FA73FB8CFA3C" box="[982,1135,1496,1521]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="horikoshii">
|
||
<emphasis id="0EE7EAA4BF4FFA5065C8FA73FB8CFA3C" box="[982,1135,1496,1521]" italics="true" pageId="25" pageNumber="26">G. horikoshii</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="A4A82A33BF4FFA50629EFA73FB36FA3F" box="[1152,1237,1496,1522]" captionStart="FIGURE 11" captionStartId="26.[151,255,1639,1663]" captionTargetBox="[151,1436,200,1617]" captionTargetId="figure@26.[151,1436,197,1618]" captionTargetPageId="26" captionText="FIGURE 11. Scatter plot with lines of best fit showing ontogenetic changes in shell height vs. shell length (A) and shell height / length ratio vs. shell length (B) in specimens of Gigantidas coseli sp. nov. and its modern congeners.: G. c os e li;: G. gladius Cosel and B. Marshall, 2003;: G. horikoshii Hashimoto and Yamane, 2005." httpUri="https://zenodo.org/record/197507/files/figure.png" pageId="25" pageNumber="26">Fig. 11</figureCitation>
|
||
) is quite distinct from those of the other two species, clearly diverging from that of
|
||
<emphasis id="0EE7EAA4BF4FFA5065A2FA56FBC3F9DB" box="[956,1056,1533,1558]" italics="true" pageId="25" pageNumber="26">G. c o s e l i</emphasis>
|
||
already at the stage of quartergrown specimens (L =
|
||
<quantity id="FB6B9B53BF4FFA5067B3F989FDD0F9F1" box="[429,563,1570,1596]" metricMagnitude="-2" metricUnit="m" metricValue="4.5" metricValueMax="5.0" metricValueMin="4.0" pageId="25" pageNumber="26" unit="mm" value="45.0" valueMax="50.0" valueMin="40.0">40–50 mm</quantity>
|
||
), and showing consistently less tendency toward elongation with growth through to the fully grown stage.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="7489653DBF4FFA5066D8F9C6FEEBF841" pageId="25" pageNumber="26" type="reference_group">
|
||
<paragraph id="3C2C36B6BF4FFA5066D8F9C6FEEBF841" blockId="25.[151,1437,152,1932]" pageId="25" pageNumber="26">
|
||
<taxonomicName id="FB934D35BF4FFA5066D8F9C6FE77F94B" box="[198,404,1645,1670]" class="Bivalvia" family="Mytilidae" genus="Gigantidas" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="coseli">
|
||
<emphasis id="0EE7EAA4BF4FFA5066D8F9C6FE77F94B" box="[198,404,1645,1670]" italics="true" pageId="25" pageNumber="26">Gigantidas coseli</emphasis>
|
||
</taxonomicName>
|
||
represents the first record of a formally described and named species in this genus from a hydrocarbon seep environment, with all reports of modern named species having so far been from hydrothermal vent sites in the Pacific Ocean. However, up to three undescribed species have been reported from seep environments off
|
||
<collectingCountry id="44847626BF4FFA5067FBF976FDCBF93A" box="[485,552,1757,1783]" name="Japan" pageId="25" pageNumber="26">Japan</collectingCountry>
|
||
and
|
||
<collectingCountry id="44847626BF4FFA50647CF976FCE3F93A" box="[610,768,1757,1783]" name="New Zealand" pageId="25" pageNumber="26">New Zealand</collectingCountry>
|
||
(
|
||
<bibRefCitation id="58024B47BF4FFA50650EF976FC3CF93A" author="Fujita" box="[784,991,1757,1783]" pageId="25" pageNumber="26" refString="Fujita, Y., Matsumoto, H., Fujiwara, Y., Hashimoto, J., Galkin, S. V., Ueshima, R. & Miyazaki, J. - I. (2009) Phylogenetic relationships of deep-sea Bathymodiolus mussels to their mytilid relatives from sunken whale carcasses and wood. Venus, 67, 123 - 134." type="journal article" year="2009">
|
||
Fujita
|
||
<emphasis id="0EE7EAA4BF4FFA506540F976FC7AF93B" box="[862,921,1757,1782]" italics="true" pageId="25" pageNumber="26">et al.</emphasis>
|
||
2009
|
||
</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="58024B47BF4FFA5065F2F976FB51F93A" author="Baco" box="[1004,1202,1757,1783]" pageId="25" pageNumber="26" refString="Baco, A., Rowden, A. A., Levin, L. A., Smith, C. R. & Bowden, D. (2010) Initial characterization of cold seep faunal communities on the New Zealand margin. Marine Geology, 272, 251 - 259." type="journal article" year="2010">
|
||
Baco
|
||
<emphasis id="0EE7EAA4BF4FFA50622EF976FB8FF93B" box="[1072,1132,1757,1782]" italics="true" pageId="25" pageNumber="26">et al.</emphasis>
|
||
2010
|
||
</bibRefCitation>
|
||
; Table 2), and there are several other species within the
|
||
<taxonomicName id="FB934D35BF4FFA50644FF8A8FD09F8D1" box="[593,746,1795,1820]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="childressi">
|
||
<emphasis id="0EE7EAA4BF4FFA50644FF8A8FD09F8D1" box="[593,746,1795,1820]" italics="true" pageId="25" pageNumber="26">B. childressi</emphasis>
|
||
</taxonomicName>
|
||
clade that are known only from hydrocarbon seep sites, including those from geographically close regions in the SW Pacific, and two species in the clade (
|
||
<taxonomicName id="FB934D35BF4FFA50639CF883FEE9F8AB" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="japonicus">
|
||
<emphasis id="0EE7EAA4BF4FFA50639CF883FEE9F8AB" italics="true" pageId="25" pageNumber="26">B. japonicus</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="FB934D35BF4FFA506758F8E6FE39F8AB" box="[326,474,1869,1894]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="25" pageNumber="26" phylum="Mollusca" rank="species" species="platifrons">
|
||
<emphasis id="0EE7EAA4BF4FFA506758F8E6FE39F8AB" box="[326,474,1869,1894]" italics="true" pageId="25" pageNumber="26">B. platifrons</emphasis>
|
||
</taxonomicName>
|
||
) are recorded from both hydrocarbon seep and hydrothermal vent environments (Table 1).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |