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<document id="B05850D5343EC290751347AD265C10F6" ID="10.11646/zootaxa.4242.2.1SLASH10449" ID-CLB-Dataset="36308" ID-DOI="10.11646/zootaxa.4242.2.1" ID-GBIF-Dataset="35c61ca1-c858-4f10-baa2-b4b2b72d1454" ID-ISSN="1175-5326" ID-Zenodo-Dep="376356" ID-ZooBank="88B94383-F912-4BBD-B9F0-5642002C496D" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1489133894790" checkinUser="plazi" docAuthor="Gordon, Dennis P. &amp; Taylor, Paul D." docDate="2017" docId="03A78782FFBFE46080F44D72FAB2F944" docLanguage="en" docName="zootaxa.4242.2.1SLASH10449.pdf" docOrigin="Zootaxa 4242 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Bryobrownius willetti Brown 1952" docType="treatment" docVersion="9" lastPageNumber="222" masterDocId="FF9EFFFAFFAAE47580634F56FFC6FFF4" masterDocTitle="Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid" masterLastPageNumber="232" masterPageNumber="201" pageNumber="222" updateTime="1698437807781" updateUser="ExternalLinkService">
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<mods:title id="D70CE96CC33042D1003EDBB67CD84729">Resolving the status of Pyriporoides and Daisyella (Bryozoa: Cheilostomata), with the systematics of some additional taxa of Calloporoidea having an ooecial heterozooid</mods:title>
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<mods:namePart id="5588C11FEAAD950437011AA63FF94119">Gordon, Dennis P.</mods:namePart>
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<mods:namePart id="31386EDC3FB8FB03B93CC93360511FC0">Taylor, Paul D.</mods:namePart>
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<mods:date id="A202EAE3DEFB67A8C13E31679EC9B96B">2017</mods:date>
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<treatment id="03A78782FFBFE46080F44D72FAB2F944" ID-DOI="http://doi.org/10.5281/zenodo.6043892" ID-GBIF-Taxon="127843514" ID-Zenodo-Dep="6043892" LSID="urn:lsid:plazi:treatment:03A78782FFBFE46080F44D72FAB2F944" httpUri="http://treatment.plazi.org/id/03A78782FFBFE46080F44D72FAB2F944" lastPageNumber="222" pageId="21" pageNumber="222">
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<paragraph id="8BB13694FFBFE46080F44D72FD94FDCA" blockId="21.[151,594,548,607]" box="[151,594,548,574]" pageId="21" pageNumber="222">
<heading id="D0F981F8FFBFE46080F44D72FD94FDCA" bold="true" box="[151,594,548,574]" fontSize="11" level="1" pageId="21" pageNumber="222" reason="1">
<taxonomicName id="4C0E4D17FFBFE46080F44D72FD94FDCA" ID-CoL="86F63" authority="Brown, 1952" authorityName="Brown" authorityYear="1952" box="[151,594,548,574]" class="Gymnolaemata" family="Calloporidae" genus="Bryobrownius" higherTaxonomySource="CoL" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="species" species="willetti">
<emphasis id="B97AEA86FFBFE46080F44D72FD94FDCA" bold="true" box="[151,594,548,574]" pageId="21" pageNumber="222">
<emphasis id="B97AEA86FFBFE46080F44D72FE5DFDCA" bold="true" box="[151,411,548,574]" italics="true" pageId="21" pageNumber="222">Bryobrownius willetti</emphasis>
(
<bibRefCitation id="EF9F4B65FFBFE46081C94D72FD8CFDCA" author="Brown" box="[426,586,548,574]" pageId="21" pageNumber="222" refString="Brown, D. A. (1952) The Tertiary Cheilostomatous Polyzoa of New Zealand. Trustees of the British Museum (Natural History), London, xii + 405 pp." type="book" year="1952">Brown, 1952</bibRefCitation>
)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
<paragraph id="8BB13694FFBFE46080F44D10FF3FFDAB" blockId="21.[151,594,548,607]" box="[151,249,582,607]" pageId="21" pageNumber="222">
(
<figureCitation id="13352A11FFBFE46080FC4D10FF36FDAB" box="[159,240,582,607]" captionStart="FIGURE 13" captionStartId="22.[151,250,1658,1680]" captionTargetBox="[250,1337,412,1636]" captionTargetId="figure@22.[249,1337,411,1636]" captionTargetPageId="22" captionText="FIGURE 13. Bryobrownius willetti (Brown, 1952) n. gen., holotype D 36574, NHMUK: A, ovicellate zooid and two interzooidal avicularia; note the ooecial kenozooid with a large circular area immediately distal of the ooecium; B, an autozooid with ten visible spine bases; C, ovicellate zooid and autozooids, the one at upper right with a reasonably well-preserved proximal opesial rim; D, ancestrula (lower left) and daughter zooids. Scalebars: A, C, D, 200 µm; B, 100 µm." httpUri="https://zenodo.org/record/376369/files/figure.png" pageId="21" pageNumber="222">Fig. 13</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C314651FFFBFE46080F44DD8FD66FD37" pageId="21" pageNumber="222" type="reference_group">
<paragraph id="8BB13694FFBFE46080F44DD8FD66FD37" blockId="21.[151,686,654,707]" pageId="21" pageNumber="222">
<treatmentCitationGroup id="AB1E11BAFFBFE46080F44DD8FD66FD37" pageId="21" pageNumber="222">
<taxonomicName id="4C0E4D17FFBFE46080F44DD8FDF7FD50" authority="Brown, 1952: 89" authorityName="Brown" authorityPageNumber="89" authorityYear="1952" box="[151,561,654,676]" class="Gymnolaemata" family="Calloporidae" genus="Amphiblestrum" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="species" species="willetti">
<emphasis id="B97AEA86FFBFE46080F44DD8FEB8FD50" box="[151,382,654,676]" italics="true" pageId="21" pageNumber="222">Amphiblestrum willetti</emphasis>
<treatmentCitation id="0AAF1085FFBFE46081E74DD9FDF7FD50" author="Brown" box="[388,561,654,676]" page="89" pageId="21" pageNumber="222" year="1952">
<bibRefCitation id="EF9F4B65FFBFE46081E74DD9FDCAFD50" author="Brown" box="[388,524,654,676]" pageId="21" pageNumber="222" refString="Brown, D. A. (1952) The Tertiary Cheilostomatous Polyzoa of New Zealand. Trustees of the British Museum (Natural History), London, xii + 405 pp." type="book" year="1952">Brown, 1952</bibRefCitation>
: 89
</treatmentCitation>
</taxonomicName>
, figs 40, 41.
<taxonomicName id="4C0E4D17FFBFE46080F44DFBFDAFFD37" authority="Gordon et al. 2009: 295" authorityName="Gordon et al." authorityPageNumber="295" authorityYear="2009" box="[151,617,685,707]" class="Gymnolaemata" family="Calloporidae" genus="Pyriporoides" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="species" species="willetti">
<emphasis id="B97AEA86FFBFE46080F44DFBFEA0FD37" box="[151,358,685,707]" italics="true" pageId="21" pageNumber="222">Pyriporoides willetti</emphasis>
:
<treatmentCitation id="0AAF1085FFBFE46081174DFBFDAFFD37" author="Gordon" box="[372,617,685,707]" page="295" pageId="21" pageNumber="222" year="2009">
<bibRefCitation id="EF9F4B65FFBFE46081174DFBFDF1FD37" author="Gordon" box="[372,567,685,707]" pageId="21" pageNumber="222" refString="Gordon, D. P., Taylor, P. D. &amp; Bigey, F. P. (2009) Phylum Bryozoa-moss animals, sea mats, lace corals. In: Gordon, D. P. (Ed.), New Zealand Inventory of Biodiversity. Fol. I. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch, pp. 271 - 297." type="book chapter" year="2009">
Gordon
<emphasis id="B97AEA86FFBFE46081AB4DF8FE32FD37" box="[456,500,685,707]" italics="true" pageId="21" pageNumber="222">et al</emphasis>
. 2009
</bibRefCitation>
: 295
</treatmentCitation>
</taxonomicName>
, 297.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C314651FFFBFE46080F44DB9FF3FFCA4" pageId="21" pageNumber="222" type="materials_examined">
<paragraph id="8BB13694FFBFE46080F44DB9FF3FFCA4" blockId="21.[151,1437,751,1712]" pageId="21" pageNumber="222">
<emphasis id="B97AEA86FFBFE46080F44DB9FE40FCFC" bold="true" box="[151,390,751,776]" pageId="21" pageNumber="222">Material examined.</emphasis>
<emphasis id="B97AEA86FFBFE46081F74DA6FE3DFCFC" box="[404,507,752,776]" italics="true" pageId="21" pageNumber="222">Holotype</emphasis>
: D36574, NHMUK, McDonalds Quarry,
<materialsCitation id="3B663CC9FFBFE46083954DB9FA9DFCD8" ID-GBIF-Occurrence="1438637097" collectionCode="NZMS" collectorName="Map Sheet J &amp; Kakanui" country="Heard Island and McDonald Islands" location="Otago" pageId="21" pageNumber="222" specimenCode="NZMS 260" specimenCount="1" stateProvince="Otago">
<collectingCountry id="F3197604FFBFE46083954DB9FBA8FCFC" box="[1014,1134,751,776]" name="Heard Island and McDonald Islands" pageId="21" pageNumber="222">McDonald</collectingCountry>
Limestone, Whaingaroan (Rupelian), Early Oligocene,
<specimenCode id="DBA89EEFFFBFE46081804C42FDA0FCD9" box="[483,614,788,813]" collectionCode="NZMS" pageId="21" pageNumber="222">
<collectionCode id="ED1FAE51FFBFE46081804C42FDF7FCD8" box="[483,561,788,812]" pageId="21" pageNumber="222">NZMS</collectionCode>
260
</specimenCode>
,
<collectorName id="26FB5342FFBFE46082124C43FD3BFCD8" box="[625,765,788,813]" pageId="21" pageNumber="222">Map Sheet J</collectorName>
42, grid reference J42/453578,
<collectorName id="26FB5342FFBFE460843D4C42FB06FCD9" box="[1118,1216,788,813]" pageId="21" pageNumber="222">Kakanui</collectorName>
, North
<collectingRegion id="49CAF876FFBFE46085774C42FA9DFCD8" box="[1300,1371,788,812]" country="New Zealand" name="Otago" pageId="21" pageNumber="222">Otago</collectingRegion>
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, New Zealand.
</paragraph>
</subSubSection>
<subSubSection id="C314651FFFBFE46080A44C0AFCDAFAD1" pageId="21" pageNumber="222" type="description">
<paragraph id="8BB13694FFBFE46080A44C0AFCDAFAD1" blockId="21.[151,1437,751,1712]" pageId="21" pageNumber="222">
<emphasis id="B97AEA86FFBFE46080A44C0AFEB2FC81" bold="true" box="[199,372,860,885]" pageId="21" pageNumber="222">Redescription.</emphasis>
Colony encrusting, unilaminar, multiserial; autozooids more or less suboval or subpyriform, arranged contiguously in quincunx; maximum colony spread c.
<quantity id="4CF69B71FFBFE460831E4CD6FC05FC63" box="[893,963,896,920]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="21" pageNumber="222" unit="mm" value="3.0">3 mm</quantity>
, hence small and spot-like [ZL 274418 (344); ZW 210322 (263)]. Gymnocyst quite well developed, continuous around zooid. Cryptocyst and opesia surrounded by a distinct raised rim [CrL 190203 (198); CrW 152173 (163)], the cryptocystal shelf fairly extensive, sloping toward opesia, attenuating laterally as far as orificial area. Opesia longer than wide, constricted in middle, imparting a broad dumbbell shape [OpL 8395 (90)]; distal margin evenly rounded, proximal margin somewhat straighter, sometimes obliquely so. Oral and pericryptocystal spine bases present, up to 10 visible, 11 likely in life; no accessory gymnocystal spine bases on best-preserved zooids. Avicularia interzooidal, more than half autozooid length, cystid with extensive gymnocyst, rostrum elongate, narrow, acute, apparently no pivot bar, opesial foramen wider than rostral palate [AvL 193263 (236); AvW 188267 (230)]. Ooecium hyperstomial, smooth with median suture line [OoL 114152 (140); OoW 135183 (158)]; ooecial kenozooid visible distally, with circular area indicating presence of foramen and cryptocyst in life. Ancestrula small, circular, with periopesial/pericryptocystal spines [AnL 153; AnW 145].
</paragraph>
</subSubSection>
<subSubSection id="C314651FFFBFE46080A44A79FAB2F944" pageId="21" pageNumber="222" type="discussion">
<paragraph id="8BB13694FFBFE46080A44A79FE7CF9D4" blockId="21.[151,1437,751,1712]" pageId="21" pageNumber="222">
<emphasis id="B97AEA86FFBFE46080A44A79FEFDFABC" bold="true" box="[199,315,1327,1352]" pageId="21" pageNumber="222">Remarks.</emphasis>
The specimen is considerably recrystallised, which may explain why
<bibRefCitation id="EF9F4B65FFBFE460843E4A67FB3AFABC" author="Brown" box="[1117,1276,1327,1352]" pageId="21" pageNumber="222" refString="Brown, D. A. (1952) The Tertiary Cheilostomatous Polyzoa of New Zealand. Trustees of the British Museum (Natural History), London, xii + 405 pp." type="book" year="1952">Brown (1952)</bibRefCitation>
failed to note the presence of spine bases and avicularia, and why basal pore-chambers cannot be detected. He described the opesia as trifoliate, but, being longer than wide, it is better described as broadly dumbbell-shaped. He only provisionally included the species in
<taxonomicName id="4C0E4D17FFBFE46082034ACAFCCDFA40" box="[608,779,1436,1460]" class="Gymnolaemata" family="Calloporidae" genus="Amphiblestrum" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="genus">
<emphasis id="B97AEA86FFBFE46082034ACAFCCDFA40" box="[608,779,1436,1460]" italics="true" pageId="21" pageNumber="222">Amphiblestrum</emphasis>
</taxonomicName>
, noting that “The affinities of this species are rather indefinite…” (ibid., p. 90). Based on SEM photos of the
<typeStatus id="54B58836FFBFE460834E4AE9FC54FA2C" box="[813,914,1471,1496]" pageId="21" pageNumber="222" type="holotype">holotype</typeStatus>
,
<bibRefCitation id="EF9F4B65FFBFE46083C34AE9FB48FA2C" box="[928,1166,1471,1496]" pageId="21" pageNumber="222" refString="Gordon, D. P., Taylor, P. D. &amp; Bigey, F. P. (2009) Phylum Bryozoa-moss animals, sea mats, lace corals. In: Gordon, D. P. (Ed.), New Zealand Inventory of Biodiversity. Fol. I. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch, pp. 271 - 297." type="book chapter">
Gordon
<emphasis id="B97AEA86FFBFE460839C4A97FBF4FA2C" box="[1023,1074,1472,1496]" italics="true" pageId="21" pageNumber="222">et al</emphasis>
. (2009)
</bibRefCitation>
noted some features in common with
<taxonomicName id="4C0E4D17FFBFE460815E4AB2FE08FA08" box="[317,462,1508,1532]" class="Gymnolaemata" family="Calloporidae" genus="Pyriporoides" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="genus">
<emphasis id="B97AEA86FFBFE460815E4AB2FE08FA08" box="[317,462,1508,1532]" italics="true" pageId="21" pageNumber="222">Pyriporoides</emphasis>
</taxonomicName>
and included it in that genus. Here, we restrict
<taxonomicName id="4C0E4D17FFBFE460839B4AB2FB4FFA08" box="[1016,1161,1508,1532]" class="Gymnolaemata" family="Calloporidae" genus="Pyriporoides" kingdom="Animalia" order="Cheilostomatida" pageId="21" pageNumber="222" phylum="Bryozoa" rank="genus">
<emphasis id="B97AEA86FFBFE460839B4AB2FB4FFA08" box="[1016,1161,1508,1532]" italics="true" pageId="21" pageNumber="222">Pyriporoides</emphasis>
</taxonomicName>
to species with caudate zooids in uniserial chains.
</paragraph>
<paragraph id="8BB13694FFBFE46080A4497AFAB2F944" blockId="21.[151,1437,751,1712]" pageId="21" pageNumber="222">
The ancestrula in the
<typeStatus id="54B58836FFBFE46081AB497AFDECF9B1" box="[456,554,1580,1605]" pageId="21" pageNumber="222" type="holotype">holotype</typeStatus>
colony is unusually small, being less than half the size of daughter zooids (unless there is a proximal portion missing). There is a hint of periopesial spine bases so it could have been tatiform in life; alternatively, there may have been a cryptocyst, which is likely. Daughter zooids have occluded opesiae, indicating the presence of kenozooidal regeneration within the cystids, but recrystallisation precludes certainty.
</paragraph>
</subSubSection>
</treatment>
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