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<document id="B6A47D58595BE2A6984BDB98F0D2F63A" ID-CLB-Dataset="32045" ID-DOI="10.11646/zootaxa.4323.1.13" ID-GBIF-Dataset="457b55c5-4803-4bff-a27f-5c9b5ff0b265" ID-ISSN="1175-5326" ID-Zenodo-Dep="897311" ID-ZooBank="6C03E70B-4E21-46Aa-B616-3Bca8D4914B4" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1505881869476" checkinUser="plazi" docAuthor="Xu, Kuidong" docDate="2017" docId="E322B307FF93FFF865C2D0BE49324923" docLanguage="en" docName="zootaxa.4323.1.13.pdf" docOrigin="Zootaxa 4323 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Placotrochides yapensis Xu 2017, n. sp." docType="treatment" docVersion="7" lastPageNumber="149" masterDocId="1F1BCB7FFF90FFFB6555D02948144C72" masterDocTitle="A new species of Placotrochides Alcock, 1902 (Anthozoa: Scleractinia: Flabellidae) from the tropical Western Pacific, including the deepest record of the genus" masterLastPageNumber="150" masterPageNumber="146" pageNumber="149" updateTime="1698468718580" updateUser="ExternalLinkService">
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<mods:title id="563E56E04D83A52ED4A1C9486BEE57FE">A new species of Placotrochides Alcock, 1902 (Anthozoa: Scleractinia: Flabellidae) from the tropical Western Pacific, including the deepest record of the genus</mods:title>
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<mods:namePart id="B8054C235FBD0F7EFA36C09F00278D42">Xu, Kuidong</mods:namePart>
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<mods:date id="6C047D3E265D6F14FF5DA180960A223C">2017</mods:date>
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<treatment id="E322B307FF93FFF865C2D0BE49324923" ID-DOI="http://doi.org/10.5281/zenodo.6004819" ID-GBIF-Taxon="134313815" ID-Zenodo-Dep="6004819" LSID="urn:lsid:plazi:treatment:E322B307FF93FFF865C2D0BE49324923" httpUri="http://treatment.plazi.org/id/E322B307FF93FFF865C2D0BE49324923" lastPageNumber="149" pageId="3" pageNumber="149">
<subSubSection id="2391519AFF93FFF865C2D0BE49134CA1" pageId="3" pageNumber="149" type="nomenclature">
<paragraph id="6B340211FF93FFF865C2D0BE4A154CC0" blockId="3.[151,513,151,211]" box="[151,513,151,178]" pageId="3" pageNumber="149">
<heading id="307CB57DFF93FFF865C2D0BE4A154CC0" bold="true" box="[151,513,151,178]" fontSize="11" level="1" pageId="3" pageNumber="149" reason="1">
<emphasis id="59FFDE03FF93FFF865C2D0BE4A154CC0" bold="true" box="[151,513,151,178]" pageId="3" pageNumber="149">
<taxonomicName id="AC8B7992FF93FFF865C2D0BE49A34CC3" ID-CoL="6VNCQ" authority="Xu, 2017" authorityName="Xu" authorityYear="2017" box="[151,439,151,177]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="yapensis" status="sp. nov.">
<emphasis id="59FFDE03FF93FFF865C2D0BE49A34CC3" bold="true" box="[151,439,151,177]" italics="true" pageId="3" pageNumber="149">Placotrochides yapensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="42CC6378FF93FFF864EAD0B14A154CC0" box="[447,513,152,178]" pageId="3" pageNumber="149" rank="species">n. sp.</taxonomicNameLabel>
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</heading>
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<paragraph id="6B340211FF93FFF865C2D09349134CA1" blockId="3.[151,513,151,211]" box="[151,263,186,211]" pageId="3" pageNumber="149">
(
<figureCitation id="F3B01E94FF93FFF865CBD09348EB4CA1" box="[158,255,186,211]" captionStart="FIGURE 2" captionStartId="2.[151,250,1698,1720]" captionTargetBox="[256,1330,221,1689]" captionTargetId="figure@2.[256,1330,221,1689]" captionTargetPageId="2" captionText="FIGURE 2. Placotrochides yapensis n. sp. THe HOlOtype (A C) and paratype (D F) in lateral, calicular, and base scar view. Scale bar = 5 mm." httpUri="https://zenodo.org/record/897315/files/figure.png" pageId="3" pageNumber="149">Figure 2</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="2391519AFF93FFF865C2D12B4A7F4D4F" pageId="3" pageNumber="149" type="materials_examined">
<paragraph id="6B340211FF93FFF865C2D12B4A7F4D4F" blockId="3.[151,1436,258,317]" pageId="3" pageNumber="149">
<emphasis id="59FFDE03FF93FFF865C2D12B499D4D69" bold="true" box="[151,393,258,283]" pageId="3" pageNumber="149">Material examined.</emphasis>
Holotype: MBM285987,
<accessionNumber id="74D89FF2FF93FFF86792D12A4B314D69" box="[711,805,259,283]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/Y30087" pageId="3" pageNumber="149" type="EnaNcbi">Y30087</accessionNumber>
,
<date id="1F3524D1FF93FFF8666DD12A4BAD4D69" box="[824,953,259,283]" pageId="3" pageNumber="149" value="2014-12-20">20.12.2014</date>
, stn. Y3-7 (2). Paratype: MBM285988,
<accessionNumber id="74D89FF2FF93FFF865C2D10D48E04D4E" box="[151,244,292,316]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/Y30087" pageId="3" pageNumber="149" type="EnaNcbi">Y30087</accessionNumber>
, same sampling data as holotype.
</paragraph>
</subSubSection>
<subSubSection id="2391519AFF93FFF865C2D14D49094FD3" pageId="3" pageNumber="149" type="description">
<paragraph id="6B340211FF93FFF865C2D14D499B4E26" blockId="3.[151,1437,356,1361]" pageId="3" pageNumber="149">
<emphasis id="59FFDE03FF93FFF865C2D14D49AB4D0F" bold="true" box="[151,447,356,381]" pageId="3" pageNumber="149">
Description of
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.
</emphasis>
Corallum (anthocyathus) subcylindrical, with rather large edge angle, without edge spines or crests (
<figureCitation id="F3B01E94FF93FFF86407D1AE49834DD2" box="[338,407,391,416]" captionStart="FIGURE 2" captionStartId="2.[151,250,1698,1720]" captionTargetBox="[256,1330,221,1689]" captionTargetId="figure@2.[256,1330,221,1689]" captionTargetPageId="2" captionText="FIGURE 2. Placotrochides yapensis n. sp. THe HOlOtype (A C) and paratype (D F) in lateral, calicular, and base scar view. Scale bar = 5 mm." httpUri="https://zenodo.org/record/897315/files/figure.png" pageId="3" pageNumber="149">Fig. 2</figureCitation>
).
<typeStatus id="B430BCB3FF93FFF864F9D1AE4A004DD2" box="[428,532,391,416]" pageId="3" pageNumber="149" type="holotype">Holotype</typeStatus>
15.2 ×
<quantity id="AC73AFF4FF93FFF8673ED1AE4ADB4DED" box="[619,719,391,416]" metricMagnitude="-2" metricUnit="m" metricValue="1.25" pageId="3" pageNumber="149" unit="mm" value="12.5">12.5 mm</quantity>
in CD, 9.0 ×
<quantity id="AC73AFF4FF93FFF8663CD1A14BAB4DED" box="[873,959,392,415]" metricMagnitude="-3" metricUnit="m" metricValue="7.7" pageId="3" pageNumber="149" unit="mm" value="7.7">7.7 mm</quantity>
in basal scar diameter,
<quantity id="AC73AFF4FF93FFF86192D1A14D3F4DED" box="[1223,1323,392,416]" metricMagnitude="-2" metricUnit="m" metricValue="1.33" pageId="3" pageNumber="149" unit="mm" value="13.3">13.3 mm</quantity>
in height, and about 25° of edge angle. Calice and basal scar slightly elliptical and symmetric, the GCD:LCD is 1.22 and the GSD:LSD is 1.17. Calicular edge damaged, scalloped, rising to a low peak corresponding to each septum. Basal scar smaller, V-shaped, indicating septa of the basal anthocyathus (
<figureCitation id="F3B01E94FF93FFF866C3D1DD4C054E7E" box="[918,1041,500,525]" captionStart="FIGURE 2" captionStartId="2.[151,250,1698,1720]" captionTargetBox="[256,1330,221,1689]" captionTargetId="figure@2.[256,1330,221,1689]" captionTargetPageId="2" captionText="FIGURE 2. Placotrochides yapensis n. sp. THe HOlOtype (A C) and paratype (D F) in lateral, calicular, and base scar view. Scale bar = 5 mm." httpUri="https://zenodo.org/record/897315/files/figure.png" pageId="3" pageNumber="149">Fig. 2C, F</figureCitation>
). Theca white to brown in ethanol preservation, slightly rough, covered with closely-spaced, horizontal annular chevron-shaped growth lines. Anthocaulus not seen.
</paragraph>
<paragraph id="6B340211FF93FFF86592D2494CCB4F47" blockId="3.[151,1437,356,1361]" pageId="3" pageNumber="149">
Septa 48, hexamerally arranged in four cycles according to the formula: S12&gt;S3&gt;S4. S12 about 1/3 LCD in width, slightly exsert, vertical edges slightly sinuous, fusing to the columella lower in the fossa. S3 about 1/23/4 width of S12. S4 small but complete, about 1/5 width of S12 (about 1.0 mm wide). All septa relatively thin (S12 about
<quantity id="AC73AFF4FF93FFF86588D2FD49234E9E" box="[221,311,724,749]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="3" pageNumber="149" unit="mm" value="0.5">0.5 mm</quantity>
, S3 about
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, and S4 about
<quantity id="AC73AFF4FF93FFF86794D2FC4B0D4E9E" box="[705,793,725,749]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="3" pageNumber="149" unit="mm" value="0.2">0.2 mm</quantity>
thick), with adjacent ones spaced
<quantity id="AC73AFF4FF93FFF861F4D2FD4D384E9E" box="[1185,1324,724,749]" metricMagnitude="-4" metricUnit="m" metricValue="4.5" metricValueMax="5.0" metricValueMin="4.0" pageId="3" pageNumber="149" unit="mm" value="0.45" valueMax="0.5" valueMin="0.4">0.40.5 mm</quantity>
, and their faces covered with small spines. Fossa of moderate depth and length, elongate, containing an non-discrete trabecular columella that measures about 5.0 ×
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and is composed of a fusion of trabeculae.
</paragraph>
<paragraph id="6B340211FF93FFF86592D36949094FD3" blockId="3.[151,1437,356,1361]" pageId="3" pageNumber="149">
<emphasis id="59FFDE03FF93FFF86592D36949594F2B" bold="true" box="[199,333,832,857]" pageId="3" pageNumber="149">Variability.</emphasis>
<typeStatus id="B430BCB3FF93FFF86401D36849A24F2B" box="[340,438,833,857]" pageId="3" pageNumber="149" type="paratype">Paratype</typeStatus>
slightly larger, 15.7 ×
<quantity id="AC73AFF4FF93FFF867E0D3684B0E4F2A" box="[693,794,833,857]" metricMagnitude="-2" metricUnit="m" metricValue="1.39" pageId="3" pageNumber="149" unit="mm" value="13.9">13.9 mm</quantity>
in CD (GCD:LCD = 1.13), 12.2 ×
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in basal scar diameter (GSD:LSD = 1.18),
<quantity id="AC73AFF4FF93FFF864B1D34C4A5D4F0E" box="[484,585,869,893]" metricMagnitude="-2" metricUnit="m" metricValue="1.71" pageId="3" pageNumber="149" unit="mm" value="17.1">17.1 mm</quantity>
in height, and about 20° of edge angle. Other characters of
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similar to
<typeStatus id="B430BCB3FF93FFF865E1D3A1490E4FD3" box="[180,282,904,929]" pageId="3" pageNumber="149" type="holotype">holotype</typeStatus>
.
</paragraph>
</subSubSection>
<subSubSection id="2391519AFF93FFF86592D3854D2F4FB7" box="[199,1339,940,965]" pageId="3" pageNumber="149" type="etymology">
<paragraph id="6B340211FF93FFF86592D3854D2F4FB7" blockId="3.[151,1437,356,1361]" box="[199,1339,940,965]" pageId="3" pageNumber="149">
<emphasis id="59FFDE03FF93FFF86592D385495A4FB7" bold="true" box="[199,334,940,965]" pageId="3" pageNumber="149">Etymology.</emphasis>
Named after the seamount adjacent to the Yap Trench, where the species was discovered.
</paragraph>
</subSubSection>
<subSubSection id="2391519AFF93FFF86592D3F94D734F9A" box="[199,1383,976,1001]" pageId="3" pageNumber="149" type="distribution">
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<emphasis id="59FFDE03FF93FFF86592D3F949744F9B" bold="true" box="[199,352,976,1001]" pageId="3" pageNumber="149">Distribution.</emphasis>
Yap-3 seamount adjacent to the Yap Trench in the tropical
<collectingRegion id="A94FCCF3FF93FFF866ADD3F84C474F9A" box="[1016,1107,977,1000]" country="Sri Lanka" name="Western" pageId="3" pageNumber="149">Western</collectingRegion>
Pacific,
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.
</paragraph>
</subSubSection>
<subSubSection id="2391519AFF93FFF86592D3DD49324923" pageId="3" pageNumber="149" type="discussion">
<paragraph id="6B340211FF93FFF86592D3DD49324923" blockId="3.[151,1437,356,1361]" pageId="3" pageNumber="149">
<emphasis id="59FFDE03FF93FFF86592D3DD492F487F" bold="true" box="[199,315,1012,1037]" pageId="3" pageNumber="149">Remarks.</emphasis>
<taxonomicName id="AC8B7992FF93FFF86410D3DD4A4D487E" authority="Xu, 2017" authorityName="Xu" authorityYear="2017" box="[325,601,1012,1037]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="yapensis" status="sp. nov.">
<emphasis id="59FFDE03FF93FFF86410D3DD4A4D487E" box="[325,601,1012,1037]" italics="true" pageId="3" pageNumber="149">Placotrochides yapensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="42CC6378FF93FFF86731D3DD4AB3487F" box="[612,679,1012,1037]" pageId="3" pageNumber="149" rank="species">
<emphasis id="59FFDE03FF93FFF86731D3DD4AB3487F" bold="true" box="[612,679,1012,1037]" pageId="3" pageNumber="149">n. sp.</emphasis>
</taxonomicNameLabel>
is the fifth species of the genus
<taxonomicName id="AC8B7992FF93FFF86178D3DD4CC1487F" authorityName="Xu" authorityYear="2017" box="[1069,1237,1012,1037]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="genus">
<emphasis id="59FFDE03FF93FFF86178D3DD4CC1487F" box="[1069,1237,1012,1037]" italics="true" pageId="3" pageNumber="149">Placotrochides</emphasis>
</taxonomicName>
. It can be easily distinguished from congeners by having a much larger edge angle in the corallum (2025° vs. 05°) (see table
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<bibRefCitation id="0F1A7FE0FF93FFF865C2D415490B4827" author="Cairns" box="[151,287,1084,1109]" pageId="3" pageNumber="149" refString="Cairns, S. D. (2004) AzOOxantHellate Scleractinia Of Australia. Records of the Australian Museum, 56 (3), 259 - 329. Https: // dOi. Org / 10.3853 / j. 0067 - 1975.56.2004.1434" type="journal article" year="2004">Cairns 2004</bibRefCitation>
and identification key in
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).
<taxonomicName id="AC8B7992FF93FFF8678ED4154BFF4826" authority="Xu, 2017" authorityName="Xu" authorityYear="2017" box="[731,1003,1084,1109]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="yapensis" status="sp. nov.">
<emphasis id="59FFDE03FF93FFF8678ED4154BFF4826" box="[731,1003,1084,1109]" italics="true" pageId="3" pageNumber="149">Placotrochides yapensis</emphasis>
</taxonomicName>
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<emphasis id="59FFDE03FF93FFF866A7D4154C254827" bold="true" box="[1010,1073,1084,1109]" pageId="3" pageNumber="149">n. sp.</emphasis>
</taxonomicNameLabel>
is most similar to
<taxonomicName id="AC8B7992FF93FFF861AAD4144D6B4827" authorityName="Alcock" authorityYear="1902" box="[1279,1407,1084,1109]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="scaphula">
<emphasis id="59FFDE03FF93FFF861AAD4144D6B4827" box="[1279,1407,1084,1109]" italics="true" pageId="3" pageNumber="149">P. scaphula</emphasis>
</taxonomicName>
in the corallum size (GCD more than
<quantity id="AC73AFF4FF93FFF86766D4484A92480B" box="[563,646,1121,1145]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="3" pageNumber="149" unit="mm" value="12.0">12 mm</quantity>
) and the arrangement and number of septa (although some S4 of
<taxonomicName id="AC8B7992FF93FFF860D2D44848E848EF" authorityName="Alcock" authorityYear="1902" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="scaphula">
<emphasis id="59FFDE03FF93FFF860D2D44848E848EF" italics="true" pageId="3" pageNumber="149">P. scaphula</emphasis>
</taxonomicName>
often lacking and having commonly less than 40 septa). However, it differs from this species in having a more rounded corallum (GCD:LCD ratio of 1.11.2 vs. 1.42.0 and GSD:LSD ratio of 1.171.18 vs. 1.541.87) and a symmetric calice (vs. often asymmetric). The new species differs distinctly from
<taxonomicName id="AC8B7992FF93FFF8613DD4E44CE14897" authorityName="Cairns" authorityYear="2004" box="[1128,1269,1228,1253]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="cylindrica">
<emphasis id="59FFDE03FF93FFF8613DD4E44CE14897" box="[1128,1269,1228,1253]" italics="true" pageId="3" pageNumber="149">P. cylindrica</emphasis>
</taxonomicName>
,
<taxonomicName id="AC8B7992FF93FFF86056D4E44D7D4896" authorityName="Cairns" authorityYear="2004" box="[1283,1385,1229,1252]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="minuta">
<emphasis id="59FFDE03FF93FFF86056D4E44D7D4896" box="[1283,1385,1229,1252]" italics="true" pageId="3" pageNumber="149">P. minuta</emphasis>
</taxonomicName>
and
<taxonomicName id="AC8B7992FF93FFF865C2D4D84913497B" authorityName="Cairns" authorityYear="1979" box="[151,263,1265,1289]" class="Anthozoa" family="Flabellidae" genus="Placotrochides" kingdom="Animalia" order="Scleractinia" pageId="3" pageNumber="149" phylum="Cnidaria" rank="species" species="frustum">
<emphasis id="59FFDE03FF93FFF865C2D4D84913497B" box="[151,263,1265,1289]" italics="true" pageId="3" pageNumber="149">P. frustum</emphasis>
</taxonomicName>
by a higher number of septa (48 vs. 32, 32 and 36 respectively); from the former two species also by the larger corallum size (maximum GCD about
<quantity id="AC73AFF4FF93FFF867D2D53D4AFF495E" box="[647,747,1300,1325]" metricMagnitude="-2" metricUnit="m" metricValue="1.5699999999999998" pageId="3" pageNumber="149" unit="mm" value="15.7">15.7 mm</quantity>
vs.
<quantity id="AC73AFF4FF93FFF8664CD53D4B69495E" box="[793,893,1300,1325]" metricMagnitude="-3" metricUnit="m" metricValue="6.56" pageId="3" pageNumber="149" unit="mm" value="6.56">6.56 mm</quantity>
and
<quantity id="AC73AFF4FF93FFF866E6D53D4C0E495E" box="[947,1050,1300,1325]" metricMagnitude="-3" metricUnit="m" metricValue="4.26" pageId="3" pageNumber="149" unit="mm" value="4.26">4.26 mm</quantity>
, respectively) (
<bibRefCitation id="0F1A7FE0FF93FFF86190D53D4D46495F" author="Cairns" box="[1221,1362,1300,1325]" pageId="3" pageNumber="149" refString="Cairns, S. D. (1989) A revisiOn Of tHe aHermatypic Scleractinia Of tHe PHilippine islands and adjacent waters. Part 1." type="book" year="1989">Cairns 1989</bibRefCitation>
,
<bibRefCitation id="0F1A7FE0FF93FFF86008D53C4D8C495F" author="Cairns" box="[1373,1432,1301,1325]" pageId="3" pageNumber="149" refString="Cairns, S. D. (1994) Scleractinia Of tHe temperate NOrtH Pacific. Smithsonian Contributions to Zoology, 557, 1 - 150. Https: // dOi. Org / 10.5479 / si. 00810282.557. i" type="journal article" year="1994">1994</bibRefCitation>
,
<bibRefCitation id="0F1A7FE0FF93FFF865C2D51048C64923" author="Cairns" box="[151,210,1337,1361]" pageId="3" pageNumber="149" refString="Cairns, S. D. (2004) AzOOxantHellate Scleractinia Of Australia. Records of the Australian Museum, 56 (3), 259 - 329. Https: // dOi. Org / 10.3853 / j. 0067 - 1975.56.2004.1434" type="journal article" year="2004">2004</bibRefCitation>
,
<bibRefCitation id="0F1A7FE0FF93FFF86588D511490E4923" author="Cairns" box="[221,282,1336,1361]" pageId="3" pageNumber="149" refString="Cairns, S. D. (2016) A key tO tHe genera and species Of tHe transversely-dividing Flabellidae (AntHOzOa, Scleractinia, Flabellidae), witH a guide tO tHe literature, and tHe descriptiOn Of twO new species. ZooKeys, 562, 1 - 48. Https: // dOi. Org / 10.3897 / zOOkeys. 562.7310" type="journal article" year="2016">2016</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>