317 lines
57 KiB
XML
317 lines
57 KiB
XML
<document id="E49BD75415FD76BDAE338E2C6928C6F6" ID-CLB-Dataset="29502" ID-DOI="10.11646/zootaxa.4484.1.1" ID-GBIF-Dataset="74b777c9-eae0-4770-8c86-dcbb10fb06b3" ID-ISSN="1175-5326" ID-Zenodo-Dep="1437848" ID-ZooBank="D66524CF-9C6D-4DF4-8CA2-B2C9708CF5FD" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1538125412450" checkinUser="plazi" docAuthor="Grischenko, Andrei V., Gordon, Dennis P. & Melnik, Viacheslav P." docDate="2018" docId="521587E4563C551509EEF914884FFBD0" docLanguage="en" docName="zootaxa.4484.1.1.pdf" docOrigin="Zootaxa 4484 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Orectopora flabellum Grischenko & Gordon & Melnik 2018, n. sp." docType="treatment" docVersion="8" lastPageNumber="19" masterDocId="AE2CFF9C563255070979FF888A4AFF87" masterDocTitle="Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining" masterLastPageNumber="91" masterPageNumber="1" pageNumber="15" updateTime="1698557051871" updateUser="ExternalLinkService">
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<mods:title id="342D4B587E0D1F3234DC3E22455214AA">Bryozoa (Cyclostomata and Ctenostomata) from polymetallic nodules in the Russian exploration area, Clarion - Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and implications of mining</mods:title>
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<mods:name id="647256F7D41FA75E824327EBF7753A6A" type="personal">
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<mods:namePart id="B8A806A8954CB1188ABCE225AA6FA0E3">Grischenko, Andrei V.</mods:namePart>
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<mods:namePart id="33BAA34F8D7B5525C33ED782B88FDFA7">Gordon, Dennis P.</mods:namePart>
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<mods:name id="73BCE32346ECF5486372552BFDBA2374" type="personal">
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<mods:namePart id="9E13C3F59789F882C4F8DA7A259C5D27">Melnik, Viacheslav P.</mods:namePart>
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<mods:title id="8FDFED13AD97CD544495430475352883">Zootaxa</mods:title>
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<mods:part id="52C9F8FF39B8C6B21F2FA513A5C61335">
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<mods:date id="03F5DDD87B5E548CDBA964B97134A65C">2018</mods:date>
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<mods:number id="61338E15026B5DAB41DE3E10A5CCE3D6">2018-09-25</mods:number>
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<mods:number id="1A8B68E650AB69549E2FDBEDD5F625F8">4484</mods:number>
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<treatment id="521587E4563C551509EEF914884FFBD0" ID-DOI="http://doi.org/10.5281/zenodo.5989781" ID-GBIF-Taxon="148403744" ID-Zenodo-Dep="5989781" LSID="urn:lsid:plazi:treatment:521587E4563C551509EEF914884FFBD0" httpUri="http://treatment.plazi.org/id/521587E4563C551509EEF914884FFBD0" lastPageId="18" lastPageNumber="19" pageId="14" pageNumber="15">
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<subSubSection id="92A66579563C550909EEF9148B7FF950" pageId="14" pageNumber="15" type="nomenclature">
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<paragraph id="DA0336F2563C550909EEF9148BAEF931" blockId="14.[151,484,1692,1751]" box="[151,484,1692,1718]" pageId="14" pageNumber="15">
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<heading id="814B819E563C550909EEF9148BAEF931" bold="true" box="[151,484,1692,1718]" fontSize="11" level="1" pageId="14" pageNumber="15" reason="1">
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<emphasis id="E8C8EAE0563C550909EEF9148BAEF931" bold="true" box="[151,484,1692,1718]" pageId="14" pageNumber="15">
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<taxonomicName id="1DBC4D71563C550909EEF9148BD1F931" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[151,411,1692,1718]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="14" pageNumber="15" phylum="Bryozoa" rank="species" species="flabellum" status="sp. nov.">
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<emphasis id="E8C8EAE0563C550909EEF9148BD1F931" bold="true" box="[151,411,1692,1718]" italics="true" pageId="14" pageNumber="15">Orectopora flabellum</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="F3FB579B563C550908DBF9148BAEF931" box="[418,484,1692,1718]" pageId="14" pageNumber="15" rank="species">n. sp.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="DA0336F2563C550909EEF9368B7FF950" blockId="14.[151,484,1692,1751]" box="[151,309,1726,1751]" pageId="14" pageNumber="15">
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(
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<figureCitation id="42872A77563C550909E6F9368B4EF950" box="[159,260,1726,1751]" captionStart-0="FIGURE 6" captionStart-1="FIGURE 7" captionStart-2="FIGURE 8" captionStartId-0="15.[151,250,1931,1953]" captionStartId-1="16.[151,250,1486,1508]" captionStartId-2="17.[151,250,1904,1926]" captionTargetBox-0="[211,1380,553,1918]" captionTargetBox-1="[161,1426,185,1475]" captionTargetBox-2="[164,1429,193,1896]" captionTargetId-0="figure@15.[211,1380,553,1918]" captionTargetId-1="figure@16.[161,1426,185,1475]" captionTargetId-2="figure@17.[164,1429,193,1896]" captionTargetPageId-0="15" captionTargetPageId-1="16" captionTargetPageId-2="17" captionText-0="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." captionText-1="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." captionText-2="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri-0="https://zenodo.org/record/1437860/files/figure.png" httpUri-1="https://zenodo.org/record/1437862/files/figure.png" httpUri-2="https://zenodo.org/record/1437865/files/figure.png" pageId="14" pageNumber="15">Figs 6–8</figureCitation>
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,
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<figureCitation id="42872A77563C55090876F9368B66F950" box="[271,300,1726,1751]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="14" pageNumber="15">51</figureCitation>
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)
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</paragraph>
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</subSubSection>
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<subSubSection id="92A66579563C550909EEF88E8F28F828" pageId="14" pageNumber="15" type="materials_examined">
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<paragraph id="DA0336F2563C550909EEF88E8F28F828" blockId="14.[151,1436,1798,2003]" pageId="14" pageNumber="15">
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<emphasis id="E8C8EAE0563C550909EEF88E8BCFF898" bold="true" box="[151,389,1798,1823]" pageId="14" pageNumber="15">Material examined.</emphasis>
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<emphasis id="E8C8EAE0563C550908EBF88E8BB2F898" box="[402,504,1798,1823]" italics="true" pageId="14" pageNumber="15">Holotype</emphasis>
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: ZIRAS 1/50673, colony detached from nodule, YMG R.V.
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<emphasis id="E8C8EAE0563C55090DB4F88E8FD3F898" box="[1229,1433,1798,1823]" italics="true" pageId="14" pageNumber="15">Yuzhmorgeologiya</emphasis>
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cruise YMG4–13, Stn 316,
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<date id="AE021032563C550908B3F8A38838F8C4" box="[458,626,1835,1859]" pageId="14" pageNumber="15" value="2014-08-03">3 August 2014</date>
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, 13.09428° N, 132.37362° W,
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<quantity id="1D449B17563C55090ABEF8A38E55F8C5" box="[967,1055,1835,1859]" metricMagnitude="3" metricUnit="m" metricValue="4.933" pageId="14" pageNumber="15" unit="m" value="4933.0">4933 m</quantity>
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.
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<emphasis id="E8C8EAE0563C55090D50F8A48EC5F8C4" box="[1065,1167,1836,1859]" italics="true" pageId="14" pageNumber="15">Paratype</emphasis>
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: NIWA 127723, colony detached from nodule, YMG R.V.
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<emphasis id="E8C8EAE0563C55090B62F8C688D3F8E0" box="[539,665,1870,1895]" italics="true" pageId="14" pageNumber="15">Gelendzhik</emphasis>
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cruise GLD4–12, Stn 258,
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<date id="AE021032563C55090AB6F8C78E3AF8E0" box="[975,1136,1870,1895]" pageId="14" pageNumber="15" value="2013-04-10">10 April 2013</date>
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, 12.90213° N, 132.87047° W,
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<quantity id="1D449B17563C550909C7F8FB8B52F80D" box="[190,280,1907,1931]" metricMagnitude="3" metricUnit="m" metricValue="4.713" pageId="14" pageNumber="15" unit="m" value="4713.0">4713 m</quantity>
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.
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<emphasis id="E8C8EAE0563C5509085DF8FA8849F80C" box="[292,515,1906,1931]" italics="true" pageId="14" pageNumber="15">Additional material</emphasis>
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: YMG4–07, Stns 126, 136; GLD4–08, Stns 145, 151; GLD4–09, Stns 183, 198; GLD4–11, Stns 219, 230; YMG4–13, Stn 273; YMG4–14, Stns 332, 363, 365. Total specimens examined 14.
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</paragraph>
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</subSubSection>
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<subSubSection id="92A66579563C550909BEF83289D4F854" box="[199,926,1978,2003]" pageId="14" pageNumber="15" type="etymology">
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<paragraph id="DA0336F2563C550909BEF83289D4F854" blockId="14.[151,1436,1798,2003]" box="[199,926,1978,2003]" pageId="14" pageNumber="15">
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<emphasis id="E8C8EAE0563C550909BEF8328B04F854" bold="true" box="[199,334,1978,2003]" pageId="14" pageNumber="15">Etymology.</emphasis>
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Latin,
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<taxonomicName id="1DBC4D71563C550908E4F832884DF854" authority="" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[413,519,1978,2003]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="14" pageNumber="15" phylum="Bryozoa" rank="species" species="flabellum">
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<emphasis id="E8C8EAE0563C550908E4F832884DF854" box="[413,519,1978,2003]" italics="true" pageId="14" pageNumber="15">flabellum</emphasis>
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</taxonomicName>
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, a fan, used as a noun in apposition.
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</paragraph>
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</subSubSection>
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<subSubSection id="92A66579563D551509BEFF1F89A4FCBF" lastPageId="18" lastPageNumber="19" pageId="15" pageNumber="16" type="description">
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<paragraph id="DA0336F2563D550809BEFF1F8BCEFE72" blockId="15.[151,1437,151,501]" pageId="15" pageNumber="16">
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<emphasis id="E8C8EAE0563D550809BEFF1F8B13FF37" bold="true" box="[199,345,151,176]" pageId="15" pageNumber="16">Description.</emphasis>
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Colony erect, flabellate, subplanar and narrowly compressed, attached by short stalk (
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<figureCitation id="42872A77563D55080C45FF1F8AE6FF53" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="15" pageNumber="16">Fig. 6A, C</figureCitation>
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), white. Initially with single spreading fan of zooids, more or less bilaterally symmetrical, or shortly branching as 2–3 flattened lobes, entire fan gently concave frontally, convex abfrontally (
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<figureCitation id="42872A77563D55080A9DFF578E36FF7F" box="[996,1148,223,248]" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="15" pageNumber="16">Fig. 6B, D, E</figureCitation>
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). At inception, first major lobe(s) comprising bilaterally compressed fascicle(s) of 10–12 autozooids, before subdivision into smaller lobes (
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<figureCitation id="42872A77563D550809E6FEAF8B53FEC7" box="[159,281,295,320]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="15" pageNumber="16">Fig. 8E–O</figureCitation>
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). Colony and lobes essentially 1–2-layered, comprising, in transverse section, initially contiguous, but then laterally diverging, autozooidal tubes, backed by discontinuous series of smaller kenozooidal tubes (
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<figureCitation id="42872A77563D55080C45FEC48FDDFEE2" box="[1340,1431,332,357]" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="15" pageNumber="16">Figs 6E</figureCitation>
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,
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<figureCitation id="42872A77563D550809EEFEF88AB3FE00" box="[151,249,368,392]" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="15" pageNumber="16">7A, C, F</figureCitation>
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,
|
||
<figureCitation id="42872A77563D5508087DFEE78BD1FE0F" box="[260,411,367,392]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="15" pageNumber="16">51A, B, D, E</figureCitation>
|
||
). Surface of colony textured by series of thin sinuous growth lines (
|
||
<figureCitation id="42872A77563D55080DEFFEE78EBEFE0F" box="[1174,1268,367,392]" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="15" pageNumber="16">Figs 6D</figureCitation>
|
||
,
|
||
<figureCitation id="42872A77563D55080C79FEF88F2FFE0F" box="[1280,1381,368,392]" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="15" pageNumber="16">7B, E, H</figureCitation>
|
||
) and needle-like crystallites perpendicular to growth lines. Simple pseudopores opening externally, seemingly moderately sparse in SEM images, but more obvious and abundant in CT scans, more or less regularly distributed (
|
||
<figureCitation id="42872A77563D550809E6FE548B53FE73" box="[159,281,476,501]" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="15" pageNumber="16">Figs 7B, E</figureCitation>
|
||
,
|
||
<figureCitation id="42872A77563D5508085CFE548B32FE72" box="[293,376,476,501]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="15" pageNumber="16">51A–F</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="8EC3667A563D550809EEF8038EEAF859" httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="15" pageNumber="16" startId="15.[151,250,1931,1953]" targetBox="[211,1380,553,1918]" targetPageId="15">
|
||
<paragraph id="DA0336F2563D550809EEF8038EEAF859" blockId="15.[151,1436,1931,2014]" pageId="15" pageNumber="16">
|
||
<emphasis id="E8C8EAE0563D550809EEF8038B5FF826" bold="true" box="[151,277,1931,1953]" pageId="15" pageNumber="16">FIGURE 6.</emphasis>
|
||
<taxonomicName id="1DBC4D71563D55080866F8048BB7F826" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[287,509,1931,1953]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="15" pageNumber="16" phylum="Bryozoa" rank="species" species="flabellum" status="gen. nov.">
|
||
<emphasis id="E8C8EAE0563D55080866F8048BB7F826" box="[287,509,1931,1953]" italics="true" pageId="15" pageNumber="16">Orectopora flabellum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="F3FB579B563D55080B7FF80388D6F826" box="[518,668,1931,1953]" pageId="15" pageNumber="16" rank="species">
|
||
<emphasis id="E8C8EAE0563D55080B7FF803881BF826" bold="true" box="[518,593,1931,1953]" pageId="15" pageNumber="16">n. gen.</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0563D55080B19F80388D6F826" bold="true" box="[608,668,1931,1953]" pageId="15" pageNumber="16">n. sp.</emphasis>
|
||
</taxonomicNameLabel>
|
||
Holotype, ZIRAS 1/50673.
|
||
<emphasis id="E8C8EAE0563D55080AB1F8038990F826" bold="true" box="[968,986,1931,1953]" pageId="15" pageNumber="16">A</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0563D55080A93F80389B6F826" bold="true" box="[1002,1020,1931,1953]" pageId="15" pageNumber="16">C</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0563D55080D75F8038E57F826" bold="true" box="[1036,1053,1931,1953]" pageId="15" pageNumber="16">E</emphasis>
|
||
, colony respectively seen in frontal, abfrontal and apical views;
|
||
<emphasis id="E8C8EAE0563D550808C5F8218B87F838" bold="true" box="[444,461,1961,1983]" pageId="15" pageNumber="16">B</emphasis>
|
||
, frontal view of left-hand lobe (fascicle) in A;
|
||
<emphasis id="E8C8EAE0563D55080ABFF8218992F838" bold="true" box="[966,984,1961,1983]" pageId="15" pageNumber="16">D</emphasis>
|
||
, oblique abfrontal view of right-hand lobe (fascicle) in C;
|
||
<emphasis id="E8C8EAE0563D5508084DF8408B0BF859" bold="true" box="[308,321,1992,2014]" pageId="15" pageNumber="16">F</emphasis>
|
||
, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm.
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="8EC3667A5622551709EEFA468BDFF95E" httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="16" pageNumber="17" startId="16.[151,250,1486,1508]" targetBox="[161,1426,185,1475]" targetPageId="16">
|
||
<paragraph id="DA0336F25622551709EEFA468BDFF95E" blockId="16.[151,1436,1486,1753]" pageId="16" pageNumber="17">
|
||
<emphasis id="E8C8EAE05622551709EEFA468B59FA63" bold="true" box="[151,275,1486,1508]" pageId="16" pageNumber="17">FIGURE 7.</emphasis>
|
||
<taxonomicName id="1DBC4D71562255170862FA478BBDFA63" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[283,503,1486,1508]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="16" pageNumber="17" phylum="Bryozoa" rank="species" species="flabellum" status="gen. nov.">
|
||
<emphasis id="E8C8EAE0562255170862FA478BBDFA63" box="[283,503,1486,1508]" italics="true" pageId="16" pageNumber="17">Orectopora flabellum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="F3FB579B562255170887FA4688C7FA63" box="[510,653,1486,1508]" pageId="16" pageNumber="17" rank="species">
|
||
<emphasis id="E8C8EAE0562255170887FA46880CFA63" bold="true" box="[510,582,1486,1508]" pageId="16" pageNumber="17">n. gen.</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562255170B2AFA4688C7FA63" bold="true" box="[595,653,1486,1508]" pageId="16" pageNumber="17">n. sp.</emphasis>
|
||
</taxonomicNameLabel>
|
||
Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151.
|
||
<emphasis id="E8C8EAE05622551708B4FA648B95F985" bold="true" box="[461,479,1516,1538]" pageId="16" pageNumber="17">A</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562255170894FA648BB4F985" bold="true" box="[493,510,1516,1538]" pageId="16" pageNumber="17">B</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562255170B72FA648856F985" bold="true" box="[523,540,1516,1538]" pageId="16" pageNumber="17">E</emphasis>
|
||
, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E;
|
||
<emphasis id="E8C8EAE0562255170BDFF9A288F2F9C7" bold="true" box="[678,696,1578,1600]" pageId="16" pageNumber="17">C</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562255170BBCF9A28898F9C7" bold="true" box="[709,722,1578,1600]" pageId="16" pageNumber="17">F</emphasis>
|
||
, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds);
|
||
<emphasis id="E8C8EAE05622551709EEF90E8AE3F91B" bold="true" box="[151,169,1670,1692]" pageId="16" pageNumber="17">D</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE05622551709CFF90E8A8DF91B" bold="true" box="[182,199,1670,1692]" pageId="16" pageNumber="17">G</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE05622551709ADF90E8AAAF91B" bold="true" box="[212,224,1670,1692]" pageId="16" pageNumber="17">J</emphasis>
|
||
, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric;
|
||
<emphasis id="E8C8EAE0562255170CFBF90E8FDCF91B" bold="true" box="[1410,1430,1670,1692]" pageId="16" pageNumber="17">H</emphasis>
|
||
, reversed (frontal) view of fascicle tip in E;
|
||
<emphasis id="E8C8EAE0562255170B35F92C881CF93D" bold="true" box="[588,598,1700,1722]" pageId="16" pageNumber="17">I</emphasis>
|
||
, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="DA0336F25622551709BEF88889EDF876" blockId="16.[151,1436,1792,2033]" pageId="16" pageNumber="17">
|
||
Autozooidal tubes mostly very long, with several running length of colony; other tubes shorter, originating by lateral budding in plane of colony as fascicles broaden (
|
||
<figureCitation id="42872A77562255170A70F8AC89D8F8BA" box="[777,914,1828,1853]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="16" pageNumber="17">Fig. 51A, C</figureCitation>
|
||
). Earliest-established peristomes more evident on colony faces by bulging of their longitudinal tubes, secondarily budded autozooids not bulging or less obviously so (
|
||
<figureCitation id="42872A775622551709B8F8E48B08F803" box="[193,322,1900,1925]" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="16" pageNumber="17">Figs 6A, E</figureCitation>
|
||
,
|
||
<figureCitation id="42872A77562255170829F8E58B39F802" box="[336,371,1901,1925]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="16" pageNumber="17">8L</figureCitation>
|
||
). Openings of primary and secondary autozooidal tubes at colony margin evidenced by their circular to subcircular rims, some separated sublaterally by shafts of slightly smaller diameter (
|
||
<figureCitation id="42872A77562255170DA9F8188FC4F82E" box="[1232,1422,1936,1961]" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="16" pageNumber="17">Fig. 7A, B, D, F</figureCitation>
|
||
), interpreted to be proximal parts of differentiating autozooids. Interior surface of zooidal tubes lined by distally imbricated foliated fabric of wedge-shaped crystallites (
|
||
<figureCitation id="42872A77562255170A71F85089D3F876" box="[776,921,2008,2033]" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="16" pageNumber="17">Fig. 7D, G, J</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption id="8EC3667A5623551609EEF8F888B1F865" httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="17" pageNumber="18" startId="17.[151,250,1904,1926]" targetBox="[164,1429,193,1896]" targetPageId="17">
|
||
<paragraph id="DA0336F25623551609EEF8F888B1F865" blockId="17.[151,1437,1904,2018]" pageId="17" pageNumber="18">
|
||
<emphasis id="E8C8EAE05623551609EEF8F88B5FF801" bold="true" box="[151,277,1904,1926]" pageId="17" pageNumber="18">FIGURE 8.</emphasis>
|
||
<taxonomicName id="1DBC4D71562355160866F8F98BB7F801" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[287,509,1904,1926]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="17" pageNumber="18" phylum="Bryozoa" rank="species" species="flabellum" status="gen. nov.">
|
||
<emphasis id="E8C8EAE0562355160866F8F98BB7F801" box="[287,509,1904,1926]" italics="true" pageId="17" pageNumber="18">Orectopora flabellum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="F3FB579B562355160B7FF8F888D6F801" box="[518,668,1904,1926]" pageId="17" pageNumber="18" rank="species">
|
||
<emphasis id="E8C8EAE0562355160B7FF8F8881BF801" bold="true" box="[518,593,1904,1926]" pageId="17" pageNumber="18">n. gen.</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562355160B19F8F888D6F801" bold="true" box="[608,668,1904,1926]" pageId="17" pageNumber="18">n. sp.</emphasis>
|
||
</taxonomicNameLabel>
|
||
Colonies at early stages of astogeny.
|
||
<emphasis id="E8C8EAE0562355160D57F8F88E15F801" bold="true" box="[1070,1119,1904,1926]" pageId="17" pageNumber="18">A–D</emphasis>
|
||
, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D;
|
||
<emphasis id="E8C8EAE0562355160A4CF806890CF823" bold="true" box="[821,838,1934,1956]" pageId="17" pageNumber="18">E</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562355160A2BF8068915F823" bold="true" box="[850,863,1934,1956]" pageId="17" pageNumber="18">F</emphasis>
|
||
, rotational views of specimen GLD4–08, Stn 145;
|
||
<emphasis id="E8C8EAE0562355160C1DF8068F3FF823" bold="true" box="[1380,1397,1934,1956]" pageId="17" pageNumber="18">G</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562355160CFBF8068FDCF823" bold="true" box="[1410,1430,1934,1956]" pageId="17" pageNumber="18">H</emphasis>
|
||
, specimen GLD4–11, Stn 230;
|
||
<emphasis id="E8C8EAE05623551608B4F8258B9DF844" bold="true" box="[461,471,1965,1987]" pageId="17" pageNumber="18">I</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE056235516089DF8258BBBF844" bold="true" box="[484,497,1965,1987]" pageId="17" pageNumber="18">J</emphasis>
|
||
, specimen GLD4–11, Stn 219;
|
||
<emphasis id="E8C8EAE0562355160A4DF8258928F844" bold="true" box="[820,866,1965,1987]" pageId="17" pageNumber="18">K–P</emphasis>
|
||
, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="DA0336F25620551509BEFF1F8E26FE0F" blockId="18.[151,1437,151,1112]" pageId="18" pageNumber="19">
|
||
Kenozooids seen in transverse section at colony margin, 1–2 on abfrontal side of each autozooid (
|
||
<figureCitation id="42872A77562055150C7DFF1F8AE8FF53" captionStart="FIGURE 7" captionStartId="16.[151,250,1486,1508]" captionTargetBox="[161,1426,185,1475]" captionTargetId="figure@16.[161,1426,185,1475]" captionTargetPageId="16" captionText="FIGURE 7. Orectopora flabellum n. gen., n. sp. Details of colony morphology. A, B, E, H, holotype colony; C, D, F, G, I, J, specimen GLD4–08, Stn 151. A, B, E, apical, oblique-abfrontal and abfrontal views, respectively, of middle lobe (fascicle) in Fig. 7E, showing apparent roof forming in axil between what will become two fascicle lobes; note relatively large pseudopores in neanic calcification of abfrontal wall in B and E; C, F, two views of a small fascicle showing autozooidal apertures adjacent to concave frontal face of lobe (on right), between which are larger developing chambers (either autozooidal or reproductive), and, along convex abfrontal face (on left), a row of mostly kenozoidal openings (and perhaps some incipient autozooid buds); D, G, J, magnified sequence of images showing the largest developing chamber in C and F, and ultrastructural wall fabric; H, reversed (frontal) view of fascicle tip in E; I, frontal view of chamber in D, G, J. Scale bars: A, B, E, H, 200 µm; C, F, 150 µm; D, I, 50 µm; G, J, 20 µm." httpUri="https://zenodo.org/record/1437862/files/figure.png" pageId="18" pageNumber="19">Fig. 7A, C, F, I</figureCitation>
|
||
), with round to subtriangular rims. Interior surface ultrastructure as in autozooids. CT scans reveal kenozooids to be long, irregular structures descending behind or to the side of zooidal tubes (
|
||
<figureCitation id="42872A77562055150D3BFF578EBDFF7F" box="[1090,1271,223,248]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="18" pageNumber="19">Fig. 51B, D, E</figureCitation>
|
||
), occasionally communicating with neighbors via interzooidal pores, with more-numerous pseudopores to outer surface. Proximally, CT scans reveal kenozooidal chambers transition from elongate tubes to layers of squatter cushion- or amoeba-shapes (
|
||
<figureCitation id="42872A7756205515082BFEC48BB0FEE3" box="[338,506,332,357]" captionStart="FIGURE 51" captionStartId="76.[151,250,1797,1819]" captionTargetBox="[284,1313,337,1787]" captionTargetId="figure@76.[284,1313,337,1787]" captionTargetPageId="76" captionText="FIGURE 51. Orectopora flabellum n. gen., n. sp. Micro-CT scans of paratype, NIWA 127723, as back-face isosurface renders showing colony interiors. A, colony curvature in lateral view showing part of abfrontal (left) and frontal (right) surfaces; note large cluster of kenozooidal chambers at lower left, becoming longer distally and near autozooidal tubes; B, like A, but from opposite side, showing more of abfrontal surface; note pseudopore density; C, en face view of colony frontal surface, with only the part in the square shown as backface isosurface render; note the kenozooids in the interior angle between two-right-hand fascicles (lobes); D, E, abfrontal side of colony, with that in D showing differentiating tip of middle lobe; note elongate kenozooids on either side of or abfrontal to autozooidal tubes; F, close-up of part of A showing variability of kenozooidal chambers. Scale bars: 100 µm." httpUri="https://zenodo.org/record/1437951/files/figure.png" pageId="18" pageNumber="19">Fig. 51A, B, F</figureCitation>
|
||
); each kenozooid communicating with neighbors above and below; those closer to outer surface with sparse pseudopores. Kenozooids also in axils between fascicle lobes.
|
||
</paragraph>
|
||
<paragraph id="DA0336F25620551509BEFE1C8BE4FE2B" blockId="18.[151,1437,151,1112]" box="[199,430,404,429]" pageId="18" pageNumber="19">Gonozooid not seen.</paragraph>
|
||
<paragraph id="DA0336F25620551509BEFE3F89E3FD02" blockId="18.[151,1437,151,1112]" pageId="18" pageNumber="19">
|
||
Ancestrula suberect, inclined at 45–55° angle to substratum (
|
||
<figureCitation id="42872A77562055150A0FFE3F89B8FE57" box="[886,1010,439,464]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="18" pageNumber="19">Fig. 8B, N</figureCitation>
|
||
). Protoecium (
|
||
<figureCitation id="42872A77562055150DEEFE3F8EA5FE57" box="[1175,1263,439,464]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="18" pageNumber="19">Fig. 8D</figureCitation>
|
||
) flared at base, with slightly smoother margin, continuous with peristome, surface with needle-like crystallites (interpreted as eroded planar-spherulitic fabric) and sparse pseudopores. Abfrontal sides of ancestrular zooid, one suberect zooid and base of erect fascicle of zooids supported by developing skirt of kenozooids and extrazooidal calcification (
|
||
<figureCitation id="42872A77562055150C16FDAC8AB1FDE7" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="18" pageNumber="19">Fig. 8B, E, N</figureCitation>
|
||
); skirt with scalloped margin depending on substratum (
|
||
<figureCitation id="42872A77562055150A12FDCF898AFDE7" box="[875,960,583,608]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="18" pageNumber="19">Fig. 8P</figureCitation>
|
||
); exterior surface marked by vertical striae and ridges, and moderately sparse but evenly distributed pseudopores.
|
||
</paragraph>
|
||
<paragraph id="DA0336F25620551509BEFD078EB7FC93" blockId="18.[151,1437,151,1112]" pageId="18" pageNumber="19">
|
||
<emphasis id="E8C8EAE05620551509BEFD078B83FD2F" bold="true" box="[199,457,655,680]" pageId="18" pageNumber="19">Measurements (mm).</emphasis>
|
||
<typeStatus id="050788505620551508ADFD078875FD2F" box="[468,575,655,680]" pageId="18" pageNumber="19" type="holotype">Holotype</typeStatus>
|
||
, ZIRAS 1/50673 (
|
||
<figureCitation id="42872A77562055150A60FD078928FD2F" box="[793,866,655,680]" captionStart="FIGURE 6" captionStartId="15.[151,250,1931,1953]" captionTargetBox="[211,1380,553,1918]" captionTargetId="figure@15.[211,1380,553,1918]" captionTargetPageId="15" captionText="FIGURE 6. Orectopora flabellum n. gen., n. sp. Holotype, ZIRAS 1/50673. A, C, E, colony respectively seen in frontal, abfrontal and apical views; B, frontal view of left-hand lobe (fascicle) in A; D, oblique abfrontal view of right-hand lobe (fascicle) in C; F, base of broken colony stalk. Scale bars: A, C, E, 500 µm; B, D, 250 µm; F, 150 µm." httpUri="https://zenodo.org/record/1437860/files/figure.png" pageId="18" pageNumber="19">Fig. 6</figureCitation>
|
||
): Colony height
|
||
<emphasis id="E8C8EAE0562055150D50FD198E7FFD2F" box="[1065,1077,657,680]" italics="true" pageId="18" pageNumber="19">c</emphasis>
|
||
. 2.07 (proximal end of largest colony broken), width 3.02; three main lobes (fascicles) length 0.48–1.01, width 0.43–1.51, thickness 0.09–0.16; ‘stalk’ at point of breakage 0.33 × 0.17; ZL 1.308–1.853 (1.604 ± 0.198); PeL 0.043–0.163 (0.082 ± 0.035); PeD 0.123–0.154 (0.136 ± 0.009); ApL 0.094–0.105 (0.099 ± 0.003); ApW 0.086–0.098 (0.091 ± 0.004).
|
||
</paragraph>
|
||
<paragraph id="DA0336F25620551509BEFCA889A4FCBF" blockId="18.[151,1437,151,1112]" box="[199,1006,799,824]" pageId="18" pageNumber="19">
|
||
Non-type specimen GLD4–08, Stn 151 (
|
||
<figureCitation id="42872A77562055150BF4FC9788ADFCBF" box="[653,743,799,824]" captionStart="FIGURE 8" captionStartId="17.[151,250,1904,1926]" captionTargetBox="[164,1429,193,1896]" captionTargetId="figure@17.[164,1429,193,1896]" captionTargetPageId="17" captionText="FIGURE 8. Orectopora flabellum n. gen., n. sp. Colonies at early stages of astogeny. A–D, rotational views of specimen GLD4–08, Stn 151, with ancestrular region more magnified in D; E, F, rotational views of specimen GLD4–08, Stn 145; G, H, specimen GLD4–11, Stn 230; I, J, specimen GLD4–11, Stn 219; K–P, rotational views of paratype specimen, NIWA 127723. Scale bars: A–C, E–H, 300 µm; D, P, 200 µm; I–O, 500 µm." httpUri="https://zenodo.org/record/1437865/files/figure.png" pageId="18" pageNumber="19">Fig. 8D</figureCitation>
|
||
): AnPeD 0.106 (
|
||
<emphasis id="E8C8EAE0562055150ADDFCA989F8FCBF" box="[932,946,801,824]" italics="true" pageId="18" pageNumber="19">n</emphasis>
|
||
= 1).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="92A665795620551509BEFCCC8908FB97" pageId="18" pageNumber="19" type="discussion">
|
||
<paragraph id="DA0336F25620551509BEFCCC8908FB97" blockId="18.[151,1437,151,1112]" pageId="18" pageNumber="19">
|
||
<emphasis id="E8C8EAE05620551509BEFCCC8B7EFCDA" bold="true" box="[199,308,836,861]" pageId="18" pageNumber="19">Remarks</emphasis>
|
||
.
|
||
<taxonomicName id="1DBC4D71562055150838FCCD887EFCDA" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[321,564,836,861]" class="Stenolaemata" genus="Orectopora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="18" pageNumber="19" phylum="Bryozoa" rank="species" species="flabellum" status="gen. nov.">
|
||
<emphasis id="E8C8EAE0562055150838FCCD887EFCDA" box="[321,564,836,861]" italics="true" pageId="18" pageNumber="19">Orectopora flabellum</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="F3FB579B562055150B43FCCC889EFCDA" box="[570,724,836,861]" pageId="18" pageNumber="19" rank="species">
|
||
<emphasis id="E8C8EAE0562055150B43FCCC88C2FCDA" bold="true" box="[570,648,836,861]" pageId="18" pageNumber="19">n. gen.</emphasis>
|
||
,
|
||
<emphasis id="E8C8EAE0562055150BEFFCCC889EFCDA" bold="true" box="[662,724,836,861]" pageId="18" pageNumber="19">n. sp.</emphasis>
|
||
</taxonomicNameLabel>
|
||
is represented in the Russian-sector collection by
|
||
<specimenCount id="CCBAFD7B562055150C7CFCCC8FD6FCDA" box="[1285,1436,836,861]" pageId="18" pageNumber="19" type="generic">14 specimens</specimenCount>
|
||
having varied size and maturity. The novel features of this taxon defy inclusion in a named family and have required some interpretation to describe and explain them, facilitated by light microscopy, with and without staining, plus SEM and micro-CT. The form of the ancestrular zooid is similar to that in
|
||
<taxonomicName id="1DBC4D71562055150D02FC278F45FC4F" authority="Grischenko & Gordon & Melnik, 2018" authorityName="Grischenko & Gordon & Melnik" authorityYear="2018" box="[1147,1295,943,968]" class="Stenolaemata" genus="Pandanipora" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomata" pageId="18" pageNumber="19" phylum="Bryozoa" rank="genus" status="gen. nov.">
|
||
<emphasis id="E8C8EAE0562055150D02FC278F45FC4F" box="[1147,1295,943,968]" italics="true" pageId="18" pageNumber="19">Pandanipora</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="E8C8EAE0562055150C6FFC278F2FFC4F" bold="true" box="[1302,1381,943,968]" pageId="18" pageNumber="19">
|
||
<taxonomicNameLabel id="F3FB579B562055150C6FFC278F2FFC4F" box="[1302,1381,943,968]" pageId="18" pageNumber="19" rank="genus">n. gen.</taxonomicNameLabel>
|
||
</emphasis>
|
||
, and the initial colony form, comprising a short ascending series of zooids supporting an elevated structure, is reminiscent of that in
|
||
<taxonomicName id="1DBC4D715620551508F5FC718974FB97" authority="(Gordon & Taylor, 2010)" authorityName="Gordon & Taylor" authorityYear="2010" baseAuthorityName="Gordon & Taylor" baseAuthorityYear="2010" box="[396,830,1015,1040]" class="Stenolaemata" family="Plagioeciidae" genus="Discantenna" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyclostomatida" pageId="18" pageNumber="19" phylum="Bryozoa" rank="genus">
|
||
<emphasis id="E8C8EAE05620551508F5FC718850FB97" box="[396,538,1017,1040]" italics="true" pageId="18" pageNumber="19">Discantenna</emphasis>
|
||
(
|
||
<bibRefCitation id="BE2D4B03562055150B51FC7F897CFB97" box="[552,822,1015,1040]" pageId="18" pageNumber="19" refId="ref34174" refString="Gordon, D. P. & Taylor, P. D. (2010) New seamount- and ridge-associated cyclostome Bryozoa from New Zealand. Zootaxa, 2533, 43 - 68." type="journal article">Gordon & Taylor, 2010</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="92A665795620551509BEFB94884FFBD0" pageId="18" pageNumber="19" type="distribution">
|
||
<paragraph id="DA0336F25620551509BEFB94884FFBD0" blockId="18.[151,1437,151,1112]" pageId="18" pageNumber="19">
|
||
<emphasis id="E8C8EAE05620551509BEFB948B2AFBB2" bold="true" box="[199,352,1052,1077]" pageId="18" pageNumber="19">Distribution.</emphasis>
|
||
Recorded from 14 stations within coordinates 12.65038–
|
||
<geoCoordinate id="BF885035562055150A8CFB948ECDFBB3" box="[1013,1159,1052,1077]" direction="north" orientation="latitude" pageId="18" pageNumber="19" precision="1" value="14.57215">14.57215° N</geoCoordinate>
|
||
, 131.73948–
|
||
<geoCoordinate id="BF885035562055150C65FB948AF8FBD0" direction="west" orientation="longitude" pageId="18" pageNumber="19" precision="1" value="-134.71841">134.71841° W</geoCoordinate>
|
||
, at depth range
|
||
<quantity id="1D449B1756205515081BFBB7884AFBD0" box="[354,512,1087,1112]" metricMagnitude="3" metricUnit="m" metricValue="4.994" metricValueMax="5.275" metricValueMin="4.713" pageId="18" pageNumber="19" unit="m" value="4994.0" valueMax="5275.0" valueMin="4713.0">4713–5275 m</quantity>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |