213 lines
22 KiB
XML
213 lines
22 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zitteliana.97.115688" ID-Pensoft-Pub="2747-8106-97-29" ID-Pensoft-UUID="CA664780046A5F938793904BB13AEB75" ID-ZooBank="BA2DA07949064AC8AE1105E21BBF12B9" ModsDocID="2747-8106-97-29" checkinTime="1702462890041" checkinUser="pensoft" docAuthor="Nuetzel, Alexander, Ebbestad, Jan Ove, Seuss, Barbara, Munnecke, Axel, Mapes, Royal H. & Cook, Alex G." docDate="2023" docId="F4E29B18A8415F0083385677AF802DA5" docLanguage="en" docName="Zitteliana 97: 29-51" docOrigin="Zitteliana 97" docPubDate="2023-12-12" docSource="http://dx.doi.org/10.3897/zitteliana.97.115688" docTitle="Orthonychia yutaroi Ebbestad 2023, sp. nov." docType="treatment" docUuid="595BAF12-C8B3-4219-B528-657BAF5EEA0B" docUuidSource="ZooBank" docVersion="1" id="CA664780046A5F938793904BB13AEB75" lastPageNumber="29" masterDocId="CA664780046A5F938793904BB13AEB75" masterDocTitle="On Paleozoic platycerate gastropods" masterLastPageNumber="51" masterPageNumber="29" pageNumber="29" updateTime="1702462890041" updateUser="pensoft">
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<mods:mods id="B19C7E1B696A9D6A4CF82427C78DBA05" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="351DD78E93F26EB7EB9B25D7BA7EC858">
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<mods:title id="D8EF666196C9ABF648D5D69583C8D057">On Paleozoic platycerate gastropods</mods:title>
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<mods:namePart id="F09B6B5099A3CA7FCFB94B1CE1A24227">Nuetzel, Alexander</mods:namePart>
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<mods:nameIdentifier id="2A4668EF92585796008DDE54477BC310" type="ORCID">https://orcid.org/0000-0002-8852-7688</mods:nameIdentifier>
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<mods:affiliation id="90ECA899A255EC489E04ABEBCA4C7E55">SNSB-Bayerische Staatssammlung fuer Palaeontologie und Geologie, Richard-Wagner-Str. 10, 80333 Muenchen, Germany & Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universitaet Muenchen, Richard-Wagner-Str. 10, 80333 Muenchen, Germany</mods:affiliation>
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<mods:nameIdentifier id="F498B514F932A9836045E44ECA09255D" type="email">nuetzel@snsb.de</mods:nameIdentifier>
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<mods:namePart id="ABAA3BF4D895FE7F3DFFCF36586F215A">Ebbestad, Jan Ove</mods:namePart>
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<mods:nameIdentifier id="119324A628A09DA4999543A5EBFFF6B6" type="ORCID">https://orcid.org/0000-0001-8769-3572</mods:nameIdentifier>
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<mods:affiliation id="CF9C6594E733EA350DC4C0BCC9A38DC3">GeoBio-Center, Ludwig-Maximilians-Universitaet Muenchen, Richard-Wagner-Str. 10, 80333 Muenchen, Germany</mods:affiliation>
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<mods:name id="12C10DD25062CA2851BA35407F09F6C7" type="personal">
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<mods:namePart id="DA4361C2A99DA296552DE0B874236487">Seuss, Barbara</mods:namePart>
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<mods:nameIdentifier id="F5C30683A08C58E85B54CB71EC9FEA57" type="ORCID">https://orcid.org/0000-0001-6615-8108</mods:nameIdentifier>
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<mods:affiliation id="07C77992FD03A8DA3BFF9C73D2C86FA5">Museum of Evolution, Uppsala University, Norbyvaegen 16, SE 75236 Uppsala, Sweden</mods:affiliation>
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</mods:name>
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<mods:name id="AD63A7E01B3188D8B52BBA735E745810" type="personal">
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<mods:namePart id="1710C393BBBB4A057BF812228CB3DD65">Munnecke, Axel</mods:namePart>
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<mods:nameIdentifier id="A37CE2C41884EDC273C20BA8B0BA0833" type="ORCID">https://orcid.org/0000-0002-6898-1082</mods:nameIdentifier>
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<mods:affiliation id="0DFB4C3B649392FC5C1584DB2B2903E0">Museum of Evolution, Uppsala University, Norbyvaegen 16, SE 75236 Uppsala, Sweden</mods:affiliation>
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</mods:role>
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<mods:namePart id="A6971EC483449A4D2514E4A9726F0D69">Mapes, Royal H.</mods:namePart>
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<mods:affiliation id="D8664E3450AB94354FAAD89E01654DB0">Friedrich-Alexander-Universitaet Erlangen-Nuernberg, GeoZentrum Nordbayern, Loewenichstrasse 28, 91054 Erlangen, Germany</mods:affiliation>
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<mods:namePart id="C18BAD6E8DA822118C6F8E1C76B3CCA2">Cook, Alex G.</mods:namePart>
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<mods:affiliation id="7BCF9E778D521A3771E3291BD2EFD8CF">Division of Paleontology, American Museum of Natural History, Central Park West at 79 th Street, New York, NY, 10024, USA</mods:affiliation>
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<mods:typeOfResource id="6643B183618A8A4E6DDFED3BE0A9D258">text</mods:typeOfResource>
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<mods:title id="9FF98C5E5BB6679CBB3149ED3A9A1B79">Zitteliana</mods:title>
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</mods:titleInfo>
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<mods:part id="A340A479C3037332C2ABC918CAAEF945">
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<mods:date id="CD7179C7C5831C8530E407644F7AB8B5">2023</mods:date>
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<mods:detail id="2244A0062A423D149218E5EB19BB1E14" type="pubDate">
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<mods:number id="1DDB3F6D9084BA4FFD9236085D52B857">2023-12-12</mods:number>
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<mods:detail id="5ABFF15CF974FCAD7AC5FDD65268DA1C" type="volume">
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<mods:number id="743C2D35EAA9CC5F8CD53C0C9A547A3F">97</mods:number>
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<mods:extent id="E951BA94960692EB79EA6B225B015706" unit="page">
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<mods:start id="58A73D8AC1B5D2537BD856E375A75C1A">29</mods:start>
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<mods:end id="4A3E388C01435BA167F252E737F558C9">51</mods:end>
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<mods:location id="DFC6CF2E2F1A6FED84128381E91D894B">
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<mods:url id="30D62BF2FBE0803D2F37B62D9E565302">http://dx.doi.org/10.3897/zitteliana.97.115688</mods:url>
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</mods:location>
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<mods:classification id="CC6BAAB3D77AB1D5BC39398FD4BED8ED">journal article</mods:classification>
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<mods:identifier id="D56CD0796DB3A5D35D77407768BDBAD8" type="DOI">http://dx.doi.org/10.3897/zitteliana.97.115688</mods:identifier>
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<mods:identifier id="7420A8B76ED0442F48829E97A54566E1" type="Pensoft-Pub">2747-8106-97-29</mods:identifier>
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<mods:identifier id="E2C6574C628A737C491B18C94F97E27A" type="ZooBank">BA2DA07949064AC8AE1105E21BBF12B9</mods:identifier>
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<mods:identifier id="2FC38DC5D238B801D3201620C676D4F4" type="Pensoft-UUID">CA664780046A5F938793904BB13AEB75</mods:identifier>
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</mods:mods>
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<treatment id="F4E29B18A8415F0083385677AF802DA5" LSID="urn:lsid:zoobank.org:act:595BAF12-C8B3-4219-B528-657BAF5EEA0B" httpUri="http://treatment.plazi.org/id/F4E29B18A8415F0083385677AF802DA5" lastPageNumber="29" pageId="0" pageNumber="29">
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<subSubSection id="7919BB2F749AAF61D208D32A07DBA57A" pageId="0" pageNumber="29" type="nomenclature">
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<paragraph id="3C81AEB8A62FF9B217A5D5F124F2EA0C" pageId="0" pageNumber="29">
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<taxonomicName id="171BBBA873DCB82EF0CBF0A83E845E39" LSID="https://zoobank.org/595BAF12-C8B3-4219-B528-657BAF5EEA0B" authority="Ebbestad" authorityName="Ebbestad" authorityYear="2023" class="Gastropoda" family="Orthonychiidae" genus="Orthonychia" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="Orthonychia yutaroi" order="Cyrtoneritida" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi" status="sp. nov.">Orthonychia yutaroi Ebbestad</taxonomicName>
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<taxonomicNameLabel id="5322C2C060AC308CB87024FCECD3535C" pageId="0" pageNumber="29">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection id="B67299F22EA4222102A05790347C86B6" pageId="0" pageNumber="29" type="description">
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<paragraph id="066845EF40C077FA232E9DC128E19597" pageId="0" pageNumber="29">
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<figureCitation id="7B74D489DD6B13E01166F01C7E1C4777" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Orthonychia yutaroi Ebbestad, sp. nov., holotype PMU 37146. (1, 2) Right lateral and anterior views. (3) Detail of initial whorls. (4) Detail of left periphery with arrow pointing to lamella. (5) Detail of left periphery with arrow pointing to lamella." figureDoi="10.3897/zitteliana.97.115688.figure2" httpUri="https://binary.pensoft.net/fig/950662" pageId="0" pageNumber="29">Fig. 2</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="5E7DF122012D3F9372A98E6213898EF8" pageId="0" pageNumber="29" type="materials_examined">
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<paragraph id="833CF35CBBD94FAA59766935366E73F5" pageId="0" pageNumber="29">Material.</paragraph>
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<paragraph id="9907637460BD30CBA08D5FFA27811E65" pageId="0" pageNumber="29">
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<materialsCitation id="B56505C6344F808C2F5C794635E3628C" accessionNumber="PMU 37146" collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" county="Dalarna" location="Late Ordovician" municipality="Siljan district" specimenCount="1" typeStatus="holotype">
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Only the
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<typeStatus id="F7D3334A7EF104F0A9FD279EE94E9A81">holotype</typeStatus>
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(
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<accessionNumber id="4CD97FEC4A3779F1812F1CF8E2AF743B" httpUri="http://www.ncbi.nlm.nih.gov/protein/PMU37146">PMU 37146</accessionNumber>
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) is known, from the
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<location id="62B8C343BD73891196D4B90D83926EBD" LSID="urn:lsid:plazi:treatment:F4E29B18A8415F0083385677AF802DA5:62B8C343BD73891196D4B90D83926EBD" county="Dalarna" municipality="Siljan district" name="Late Ordovician">Late Ordovician</location>
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(Katian)
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<location id="ACD14FAB224F96507D68C539D0A43FA8" LSID="urn:lsid:plazi:treatment:F4E29B18A8415F0083385677AF802DA5:ACD14FAB224F96507D68C539D0A43FA8" county="Dalarna" municipality="Siljan district" name="Boda Limestone">Boda Limestone</location>
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at
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<normalizedToken id="7165B776B24B07D5536A21506B53805A" originalValue="Jutjärn">
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<location id="7B0EB6592DAAC0B9FD99C3884E9245DD" LSID="urn:lsid:plazi:treatment:F4E29B18A8415F0083385677AF802DA5:7B0EB6592DAAC0B9FD99C3884E9245DD" county="Dalarna" municipality="Siljan district" name="Jutjaern">Jutjaern</location>
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</normalizedToken>
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quarry,
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<collectingMunicipality id="FE9C11C5CEC51397E8B483FA046E780E">Siljan district</collectingMunicipality>
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,
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<collectingCounty id="A90BE6EFB129E72FFE9B14D8FD311F5B">Dalarna</collectingCounty>
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="CCD88977BC66E7BB1157D7993ACE8CD5" pageId="0" pageNumber="29" type="derivation of name">
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<paragraph id="FDB980D27237F1B597BABAD5D721B1AD" pageId="0" pageNumber="29">Derivation of name.</paragraph>
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<paragraph id="A9CEC958E45F978BE087422F35E034C2" pageId="0" pageNumber="29">After Dr Yutaro Suzuki, Shizuoka University, Japan, who found the specimen and who has made extensive studies of fossils and the mound ecology of the Boda Limestone.</paragraph>
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</subSubSection>
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<subSubSection id="F349CB06461386431D7DBBD857D7740D" pageId="0" pageNumber="29" type="diagnosis">
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<paragraph id="EDEA5A2BCB3DF2064F1B6857EABE347F" pageId="0" pageNumber="29">Diagnosis.</paragraph>
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<paragraph id="1EE0A9AB6406828481BCA4DACA92D230" pageId="0" pageNumber="29">Shell tall, teleoconch forming a weakly cyrtoconic tube, open coiled with apex coiled through half a whorl; supra-apical surface formed by raised and convex median section; teleoconch ornamentation consist of densely spaced, slightly undulating, strong co-marginal ribs on initial parts, widening later in ontogeny to distinct growth increments that end in a flared lamellae; growth lines corrugated, laterally forming two or three spaced flutes, across the median part only weakly undulating; last part of protoconch without visible ornament and abrupt transition to teleoconch; early protoconch whorls poorly preserved as imprint, possibly tightly coiled consisting of ca. two whorls.</paragraph>
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</subSubSection>
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<subSubSection id="BA2A418415E64A39E0AF086060F9A579" pageId="0" pageNumber="29" type="description">
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<paragraph id="B1CC7FE4CF2114255F50CD376442C0AB" pageId="0" pageNumber="29">Description.</paragraph>
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<paragraph id="1C7CE35284E265E9FD5CDC735ED62075" pageId="0" pageNumber="29">
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Shell tall, weakly cyrtoconic, open coiled with apex coiled through at least half a whorl before shell coiling ends and a straight tube forms, widening gradually with length at base about 45% of total height (= 20 mm). Shell nearly planispiral but with weak translation down the axis if viewed with aperture in normal right-handed position. Apex overhang sub-apical margin. Supra-apical surface of shell forms a raised and convex median section, with concave transition to lateral surfaces. Ornamentation on initial conch consist of densely spaced, slightly undulating, strong co-marginal ribs. A couple of millimeters from the apex, the space between the ribs widens gradually and distinct growth increments (here taken as the growth accumulated in the space between subsequent lamellae) become apparent. Increments are spaced no more than 1 mm apart, consist of fine co-marginal growth lines and end with a lamella that extends prominently and nearly horizontal from the shell (arrows in Fig.
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<figureCitation id="D28FDCD8875AAE5B58E9155FF70BE728" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Orthonychia yutaroi Ebbestad, sp. nov., holotype PMU 37146. (1, 2) Right lateral and anterior views. (3) Detail of initial whorls. (4) Detail of left periphery with arrow pointing to lamella. (5) Detail of left periphery with arrow pointing to lamella." figureDoi="10.3897/zitteliana.97.115688.figure2" httpUri="https://binary.pensoft.net/fig/950662" pageId="0" pageNumber="29">2A4, A5</figureCitation>
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). Near the aperture the space between the increments again becomes narrower. The growth lines are corrugated, laterally forming two or three spaced flutes that have a pointed bell-shaped, whereas the growth lines across the median part only are weakly undulating. Ornamentation on inner margin obscured by matrix. Medially the growth-lines form a broad low-relief U-shape.
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</paragraph>
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<caption id="9E38FFF1CD94B9241F89A673712B212E" doi="10.3897/zitteliana.97.115688.figure2" httpUri="https://binary.pensoft.net/fig/950662" pageId="0" pageNumber="29" start="Figure 2" startId="F2">
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<paragraph id="615631203A853B0555D3F70B26BD416F" pageId="0" pageNumber="29">
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<emphasis id="341E61911E0C3906AF7A67EFACDB1192" bold="true" pageId="0" pageNumber="29">Figure 2.</emphasis>
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<taxonomicName id="EB66C92980AEDF2A45AC52AEB9F6285A" authorityName="Ebbestad" authorityYear="2023" class="Gastropoda" family="Orthonychiidae" genus="Orthonychia" kingdom="Animalia" lsidName="Orthonychia yutaroi" order="Cyrtoneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
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<emphasis id="7F1E29DCAF17E4FC4F9706DB269E0591" italics="true" pageId="0" pageNumber="29">Orthonychia yutaroi</emphasis>
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</taxonomicName>
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Ebbestad, sp. nov., holotype PMU 37146.
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<emphasis id="31C0229C17F888F6AAF3787EBC92F442" bold="true" pageId="0" pageNumber="29">(1, 2)</emphasis>
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Right lateral and anterior views.
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<emphasis id="DDD62AB12E14576E65BFB075E8B6E011" bold="true" pageId="0" pageNumber="29">(3)</emphasis>
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Detail of initial whorls.
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<emphasis id="955AB8F0AB5B0F01EDA53CAB51FA8886" bold="true" pageId="0" pageNumber="29">(4)</emphasis>
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Detail of left periphery with arrow pointing to lamella.
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<emphasis id="35BA87A53A1EC79C8A33C12AD94EB9A0" bold="true" pageId="0" pageNumber="29">(5)</emphasis>
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Detail of left periphery with arrow pointing to lamella.
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</paragraph>
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</caption>
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<paragraph id="849C3076CD2E8805B0B9C2637AA6A86C" pageId="0" pageNumber="29">
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Last part of protoconch without visible ornament and abrupt transition to teleoconch; width of last protoconch whorl at termination about 200
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<normalizedToken id="29121D4374F145193BA0921B13E0F4B4" originalValue="µm">µm</normalizedToken>
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; early protoconch whorls poorly preserved as imprint, possibly tightly coiled consisting of ca. two whorls.
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</paragraph>
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</subSubSection>
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<subSubSection id="C6E08C2C2F9BF2C54658DEAC80E31F4F" pageId="0" pageNumber="29" type="remarks">
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<paragraph id="D9232423577FF5B181B02D2A4BF1511F" pageId="0" pageNumber="29">Remarks.</paragraph>
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<paragraph id="A344B7F8C0053DE705651BDFC5EC10F7" pageId="0" pageNumber="29">
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The conch of
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<taxonomicName id="C1DF6FC5E63CA9F48283EE33C1C42175" authorityName="Ebbestad" authorityYear="2023" class="Gastropoda" family="Orthonychiidae" genus="Orthonychia" kingdom="Animalia" lsidName="Orthonychia yutaroi" order="Cyrtoneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
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<emphasis id="99E4DA53AA12CC73F9F0EAC5B35C2B1F" italics="true" pageId="0" pageNumber="29">Orthonychia yutaroi</emphasis>
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</taxonomicName>
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resembles an orthonychian shell morphology in the tall elongated tube-like shell and has a similar crenulated teleoconch ornamentation as the Silurian
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<taxonomicName id="30A06AAEB0F4142F7509DCED5A89034B" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
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<emphasis id="ABF27BB478CB077CAAA57C2C694867C9" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
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</taxonomicName>
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(see below). Compared with
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<taxonomicName id="29BFFD74B3AA54C0F265613375D4A8C5" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
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<emphasis id="B262ECCAADFA54B00EA15CA4DB5363BB" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
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</taxonomicName>
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|
it differs markedly in attaining an open coiled shell earlier, as the initial shell of
|
|
<taxonomicName id="1C05FD505B1B81A587C456475243ABBF" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
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<emphasis id="9C299B86416336511B2625EDFE0B5EA7" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
|
|
</taxonomicName>
|
|
coils more tightly. However, the teleochonch in
|
|
<taxonomicName id="26BC0E781DC40335BEF949C5E7FDD3C8" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. yutaroi" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
|
|
<emphasis id="9EB395A823986ABC55A87EA961E95C27" italics="true" pageId="0" pageNumber="29">O. yutaroi</emphasis>
|
|
</taxonomicName>
|
|
expands more slowly in late ontogeny than that of
|
|
<taxonomicName id="A70CAF73F9CC6CBFE77BAA141B3996DC" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
|
|
<emphasis id="19FA03D6D09F1AC49F89F497069C963A" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
|
|
</taxonomicName>
|
|
and the shell of the Dalarna species is proportionally taller and straighter (less pronounced supra-apical curvature). The periodic flaring lamellae in
|
|
<taxonomicName id="7A54556A2FED4E30E45E15DDFBCA2327" authorityName="Ebbestad" authorityYear="2023" class="Gastropoda" family="Orthonychiidae" genus="Orthonychia" kingdom="Animalia" lsidName="Orthonychia yutaroi" order="Cyrtoneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
|
|
<emphasis id="91A195AB7FA4E11A66CFD7BC9B5758CA" italics="true" pageId="0" pageNumber="29">Orthonychia yutaroi</emphasis>
|
|
</taxonomicName>
|
|
are much more extensive and more pronounced, and ribbing is much denser, especially in the early teleoconch, than in
|
|
<taxonomicName id="75871979BB607EAF7F4C4C7591A571CE" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
|
|
<emphasis id="3B105EC76F9A2AA9BBE2969AAC12C62C" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
|
|
</taxonomicName>
|
|
. Furthermore,
|
|
<taxonomicName id="9180770406C36048C0823F55B671E2A7" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. yutaroi" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
|
|
<emphasis id="A089A4E8D0EC6FFFCC441B613BDE04A3" italics="true" pageId="0" pageNumber="29">O. yutaroi</emphasis>
|
|
</taxonomicName>
|
|
has stronger crenulations forming flutes laterally, whereas the longitudinal flutes are weak or absent in
|
|
<taxonomicName id="4C639B055E0A9C83CBC4C48A7C0DE102" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
|
|
<emphasis id="D9471EF4CC22C7A6424AAA204C2754DF" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
|
|
</taxonomicName>
|
|
. But both species share the development of periodic growth increments that end with a crenulated lamella.
|
|
</paragraph>
|
|
<paragraph id="D697250F258F519109DABFFAD1069185" pageId="0" pageNumber="29">
|
|
The protoconch of
|
|
<taxonomicName id="07C317C7D34EFC1C2A1C80FCEA52A68B" authorityName="Ebbestad" authorityYear="2023" class="Gastropoda" family="Orthonychiidae" genus="Orthonychia" kingdom="Animalia" lsidName="Orthonychia yutaroi" order="Cyrtoneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="yutaroi">
|
|
<emphasis id="BFF2C4609D5FDA0FC25F6A29A01B116A" italics="true" pageId="0" pageNumber="29">Orthonychia yutaroi</emphasis>
|
|
</taxonomicName>
|
|
is incompletely preserved but it is clear that it lacks visible ornament and has an abrupt transition to the teleoconch. It seems to be possible that the protoconch is tightly coiled and consists of ca. 2.5 whorls, similar to what we have found in
|
|
<taxonomicName id="E3D7FD06CB9554E52B18AC4CBEA8E4E7" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="O. enorme" order="Cycloneritimorpha" pageId="0" pageNumber="29" phylum="Mollusca" rank="species" species="enorme">
|
|
<emphasis id="ECE735379D18EB5F2A1CEABD8C898863" italics="true" pageId="0" pageNumber="29">O. enorme</emphasis>
|
|
</taxonomicName>
|
|
(see below).
|
|
</paragraph>
|
|
</subSubSection>
|
|
</treatment>
|
|
</document> |