treatments-xml/data/86/5C/87/865C87FDFFA5FFE939C5FD234C4FFD9F.xml
2024-06-21 12:42:39 +02:00

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<mods:title id="92939929D7C4FDF558963EED7364DE9F">A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera</mods:title>
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<treatment id="865C87FDFFA5FFE939C5FD234C4FFD9F" ID-DOI="http://doi.org/10.5281/zenodo.6723045" ID-GBIF-Taxon="196202608" ID-Zenodo-Dep="6723045" LSID="urn:lsid:zoobank.org:act:67915CAA-948A-462B-A581-8549E84C7F8A" httpUri="http://treatment.plazi.org/id/865C87FDFFA5FFE939C5FD234C4FFD9F" lastPageId="9" lastPageNumber="568" pageId="7" pageNumber="568">
<subSubSection id="46EF6560FFA5FFE739C5FD234B45FCFF" box="[972,1296,757,784]" pageId="7" pageNumber="568" type="nomenclature">
<paragraph id="0E4A36EBFFA5FFE739C5FD234B45FCFF" blockId="7.[972,1296,757,784]" box="[972,1296,757,784]" pageId="7" pageNumber="568">
<heading id="55028187FFA5FFE739C5FD234B45FCFF" box="[972,1296,757,784]" centered="true" fontSize="11" level="2" pageId="7" pageNumber="568" reason="2">
<taxonomicName id="C9F54D68FFA5FFE739C5FD234A9AFCE0" authority="Ernst &amp; Carrera, 2022" authorityName="Ernst &amp; Carrera" authorityYear="2022" box="[972,1231,757,784]" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="7" pageNumber="568" phylum="Bryozoa" rank="species" species="argentinensis" status="sp. nov.">
<emphasis id="3C81EAF9FFA5FFE739C5FD234A9AFCE0" bold="true" box="[972,1231,757,784]" italics="true" pageId="7" pageNumber="568">Xenotrypa argentinensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B25782FFA5FFE73EDCFD234B45FCFF" box="[1237,1296,758,784]" pageId="7" pageNumber="568" rank="species">n. sp.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="46EF6560FFA5FFE739CCFCC04BE5FC87" pageId="7" pageNumber="568" type="description">
<paragraph id="0E4A36EBFFA5FFE739CCFCC04B42FCC0" blockId="7.[965,1303,789,816]" box="[965,1303,789,816]" pageId="7" pageNumber="568">
(
<figureCitation id="96CE2A6EFFA5FFE739C7FCC04A5BFCC0" box="[974,1038,789,815]" captionStart="FIG" captionStartId="8.[132,143,1940,1957]" captionTargetBox="[132,1455,216,1879]" captionTargetId="figure-25@8.[699,1268,770,1326]" captionTargetPageId="8" captionText="FIG. 4. — A-E, Lunaferamita virginiensis Utgaard, 1981: A, longitudinal thin section of a colony, CEGH-UNC 27524 a; B, C, longitudinal section of exozone showing autozooecia with diaphragms and vesicles, CEGH-UNC 27513 c; D, tangential thin section showing macula, autozooecial apertures and acanthostyles (arrows), CEGH-UNC 27513 b; F, G, Xenotrypa argentinensis n. sp., longitudinal thin section, holotype CEGH-UNC 27523 b. Scale bars: A, F, 5 mm; B, D, 0.5 mm; C, E, 0.2 mm; G, 1 mm." figureDoi="http://doi.org/10.5281/zenodo.6725936" httpUri="https://zenodo.org/record/6725936/files/figure.png" pageId="7" pageNumber="568">Figs 4</figureCitation>
F-G; 5A-E; Appendix 1)
</paragraph>
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urn:lsid:zoobank.org:act:
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<subSubSection id="46EF6560FFA5FFE73924FC4C4BE5FB9A" pageId="7" pageNumber="568" type="materials_examined">
<paragraph id="0E4A36EBFFA5FFE73924FC4C4DFCFC24" blockId="7.[813,1457,921,971]" pageId="7" pageNumber="568">
<materialsCitation id="BE9D3CB6FFA5FFE73924FC4C4DFCFC24" ID-GBIF-Occurrence="3818790330" collectionCode="CEGH-UNC" pageId="7" pageNumber="568" specimenCode="CEGH-UNC 27523" specimenCount="1" typeStatus="holotype">
<typeStatus id="D14E8849FFA5FFE73924FC4C4DCDFC5F" box="[813,920,921,944]" pageId="7" pageNumber="568" type="holotype">HOLOTYPE</typeStatus>
. —
<specimenCode id="5E539E90FFA5FFE739C0FC4C4AC8FC5E" box="[969,1181,921,945]" collectionCode="CEGH-UNC" pageId="7" pageNumber="568">CEGH-UNC 27523</specimenCode>
a, b (three thin sections of one colony).
</materialsCitation>
</paragraph>
<paragraph id="0E4A36EBFFA5FFE73924FC364BE5FC14" blockId="7.[813,1456,995,1019]" box="[813,1456,995,1019]" pageId="7" pageNumber="568">
<materialsCitation id="BE9D3CB6FFA5FFE73924FC364BE5FC14" ID-GBIF-Occurrence="3818790331" box="[813,1456,995,1019]" pageId="7" pageNumber="568" typeStatus="paratype">
<typeStatus id="D14E8849FFA5FFE73924FC364DD9FC15" box="[813,908,995,1018]" pageId="7" pageNumber="568" type="paratype">PARATYPE</typeStatus>
. —
<collectionCode id="68E4AE2EFFA5FFE739BEFC364A6AFC14" box="[951,1087,995,1019]" pageId="7" pageNumber="568">CEGH-UNC</collectionCode>
27521 a (thin section of one colony).
</materialsCitation>
</paragraph>
<paragraph id="0E4A36EBFFA5FFE73924FBC64B30FBAA" blockId="7.[811,1456,1043,1093]" pageId="7" pageNumber="568">
<collectionCode id="68E4AE2EFFA5FFE73924FBC64DEBFBC6" box="[813,958,1043,1066]" pageId="7" pageNumber="568">TYPE LOCALITY</collectionCode>
. — La Pola creek section near Albardon village,
<collectingRegion id="CC31F809FFA5FFE73F85FBC64DE0FBAA" country="Argentina" name="San Juan" pageId="7" pageNumber="568">San Juan Province</collectingRegion>
,
<collectingCountry id="76E2767BFFA5FFE739B6FBF84A4AFBAA" box="[959,1055,1069,1093]" name="Argentina" pageId="7" pageNumber="568">Argentine</collectingCountry>
Precordillera, western
<collectingCountry id="76E2767BFFA5FFE73EF4FBF84B34FBAA" box="[1277,1377,1069,1093]" name="Argentina" pageId="7" pageNumber="568">Argentina</collectingCountry>
.
</paragraph>
<paragraph id="0E4A36EBFFA5FFE73924FB884BE5FB9A" blockId="7.[813,1456,1117,1141]" box="[813,1456,1117,1141]" pageId="7" pageNumber="568">
<collectionCode id="68E4AE2EFFA5FFE73924FB884DEFFB9C" box="[813,954,1117,1140]" pageId="7" pageNumber="568">TYPE HORIZON</collectionCode>
. — La Pola Formation, Upper Ordovician, Sandbian.
</paragraph>
</subSubSection>
<subSubSection id="46EF6560FFA5FFE73924FB584A3FFAC6" pageId="7" pageNumber="568" type="diagnosis">
<paragraph id="0E4A36EBFFA5FFE73924FB584A3FFAC6" blockId="7.[811,1457,1164,1321]" pageId="7" pageNumber="568">DIAGNOSIS. — Massive multilayered colonies. Autozooecial apertures rounded-polygonal. Autozooecial diaphragms rare to absent in endozone, common in exozone, straight, thin. Vesicles abundant, 4-7 surrounding each aperture, completely isolating autozooecia. Acanthostyles relatively large, 3-6 surrounding each autozooecial aperture. Maculae not observed.</paragraph>
</subSubSection>
<subSubSection id="46EF6560FFA5FFE73924FA944BE5FAB7" box="[813,1456,1344,1368]" pageId="7" pageNumber="568" type="etymology">
<paragraph id="0E4A36EBFFA5FFE73924FA944BE5FAB7" blockId="7.[813,1456,1344,1368]" box="[813,1456,1344,1368]" pageId="7" pageNumber="568">
ETYMOLOGY. — The species is named after finding it in
<collectingCountry id="76E2767BFFA5FFE73F41FA954BF9FAB7" box="[1352,1452,1344,1368]" name="Argentina" pageId="7" pageNumber="568">Argentina</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="46EF6560FFA5FFE73924FA414DE8F883" pageId="7" pageNumber="568" type="description">
<paragraph id="0E4A36EBFFA5FFE73924FA414DE8FA41" blockId="7.[812,1457,1428,1836]" box="[813,957,1428,1454]" pageId="7" pageNumber="568">DESCRIPTION</paragraph>
<paragraph id="0E4A36EBFFA5FFE73924FA664DB1F8C3" blockId="7.[812,1457,1428,1836]" pageId="7" pageNumber="568">
Massive multilayered colonies.Autozooecia long, having polygonal transverse section in endozone. Autozooecial apertures rounded-polygonal. Autozooecial diaphragms rare to absent in endozone, common in exozone, straight, thin. Vesicles abundant, 4-7 surrounding each aperture, completely isolating autozooecia, angular in cross section, having straight or curved roofs, sealed by calcitic skeleton near colony surface. Acanthostyles relatively large, 3-6 surrounding each autozooecial aperture, originating in endozone, with distinct wide hyaline cores, rarely indenting autozooecia. Autozooecial walls indistinctly laminated,
<quantity id="C90D9B0EFFA5FFE73E6DF9274B4BF8E3" box="[1124,1310,1778,1805]" metricMagnitude="-5" metricUnit="m" metricValue="1.15" metricValueMax="1.5" metricValueMin="0.8" pageId="7" pageNumber="568" unit="mm" value="0.0115" valueMax="0.015" valueMin="0.008">
<geoCoordinate id="6BC1502CFFA5FFE73E6DF9274AF1F8E2" box="[1124,1188,1778,1805]" degrees="0.008" direction="north" orientation="latitude" pageId="7" pageNumber="568" precision="55" value="0.008">0.008</geoCoordinate>
<geoCoordinate id="6BC1502CFFA5FFE73EADF9274AB9F8E2" box="[1188,1260,1778,1805]" degrees="0.015" direction="west" orientation="longitude" pageId="7" pageNumber="568" precision="55" value="-0.015">-0.015</geoCoordinate>
mm
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thick. Maculae not observed.
</paragraph>
<paragraph id="0E4A36EBFFA5FFE73924F8874DE8F883" blockId="7.[813,1456,1874,2028]" box="[813,957,1874,1900]" pageId="7" pageNumber="568">COMPARISON</paragraph>
</subSubSection>
<subSubSection id="46EF6560FFA5FFE93924F8A44C4FFD9F" lastPageId="9" lastPageNumber="570" pageId="7" pageNumber="568" type="discussion">
<paragraph id="0E4A36EBFFA5FFE93924F8A44C4FFD9F" blockId="7.[813,1456,1874,2028]" lastBlockId="9.[131,776,215,624]" lastPageId="9" lastPageNumber="570" pageId="7" pageNumber="568">
The investigated material is similar to representatives of the Family
<taxonomicName id="C9F54D68FFA5FFE73972F8444A59F844" authorityName="Utgaard" authorityYear="1983" box="[891,1036,1937,1963]" class="Stenolaemata" family="Xenotrypidae" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="7" pageNumber="568" phylum="Bryozoa" rank="family">Xenotrypidae</taxonomicName>
which consists of two genera:
<taxonomicName id="C9F54D68FFA5FFE73F4FF8474DE8F823" authority="Bassler, 1952" authorityName="Bassler" authorityYear="1952" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="7" pageNumber="568" phylum="Bryozoa" rank="genus">
<emphasis id="3C81EAF9FFA5FFE73F4FF8474BFBF844" box="[1350,1454,1938,1963]" italics="true" pageId="7" pageNumber="568">Xenotrypa</emphasis>
<bibRefCitation id="6A644B1AFFA5FFE73924F8644DE8F823" author="BASSLER R. S." box="[813,957,1969,1996]" pageId="7" pageNumber="568" pagination="381 - 385" refId="ref18772" refString="BASSLER R. S. 1952. - Taxonomic notes on genera of fossil and Recent Bryozoa. Journal of the Washington Academy of Sciences 42: 381 - 385. https: // www. jstor. org / stable / 24531385" type="journal article" year="1952">Bassler, 1952</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="C9F54D68FFA5FFE739F0F8674B4FF823" authority="Bassler, 1952" authorityName="Bassler" authorityYear="1952" box="[1017,1306,1969,1996]" class="Stenolaemata" family="Xenotrypidae" genus="Hennigopora" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="7" pageNumber="568" phylum="Bryozoa" rank="genus">
<emphasis id="3C81EAF9FFA5FFE739F0F8674A2AF824" box="[1017,1151,1970,1995]" italics="true" pageId="7" pageNumber="568">Hennigopora</emphasis>
<bibRefCitation id="6A644B1AFFA5FFE73E8FF8644B4FF823" author="BASSLER R. S." box="[1158,1306,1969,1996]" pageId="7" pageNumber="568" pagination="381 - 385" refId="ref18772" refString="BASSLER R. S. 1952. - Taxonomic notes on genera of fossil and Recent Bryozoa. Journal of the Washington Academy of Sciences 42: 381 - 385. https: // www. jstor. org / stable / 24531385" type="journal article" year="1952">Bassler, 1952</bibRefCitation>
</taxonomicName>
. However, its assignment to a genus is difficult. The genus
<taxonomicName id="C9F54D68FFA5FFE93EFCF8074EE9FF1D" authority="Bassler, 1952" authorityName="Bassler" authorityYear="1952" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" lastPageId="9" lastPageNumber="570" order="Cystoporida" pageId="7" pageNumber="568" phylum="Bryozoa" rank="genus">
<emphasis id="3C81EAF9FFA5FFE73EFCF8074B0EF804" box="[1269,1371,2002,2027]" italics="true" pageId="7" pageNumber="568">Xenotrypa</emphasis>
<bibRefCitation id="6A644B1AFFA5FFE93F6BF8044EE9FF1D" author="BASSLER R. S." lastPageId="9" lastPageNumber="570" pageId="7" pageNumber="568" pagination="381 - 385" refId="ref18772" refString="BASSLER R. S. 1952. - Taxonomic notes on genera of fossil and Recent Bryozoa. Journal of the Washington Academy of Sciences 42: 381 - 385. https: // www. jstor. org / stable / 24531385" type="journal article" year="1952">Bassler, 1952</bibRefCitation>
</taxonomicName>
is known with few specimens restricted mainly to the
<typeStatus id="D14E8849FFABFFE93A8CFF2D4EE6FEFD" box="[133,179,248,274]" pageId="9" pageNumber="570">type</typeStatus>
material of two species of the genus,
<taxonomicName id="C9F54D68FFABFFE9383EFF2D4F72FEDE" authority="(Bassler, 1911)" baseAuthorityName="Bassler" baseAuthorityYear="1911" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="primaeva">
<emphasis id="3C81EAF9FFABFFE9383EFF2D4D53FEFE" box="[567,774,248,273]" italics="true" pageId="9" pageNumber="570">Xenotrypa primaeva</emphasis>
(
<bibRefCitation id="6A644B1AFFABFFE93A82FEC24F4AFEDE" author="BASSLER R. S." box="[139,287,279,305]" pageId="9" pageNumber="570" pagination="1 - 382" refId="ref18727" refString="BASSLER R. S. 1911. - The early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the Smithsonian Institution, United States National Museum 77: 1 - 382. https: // hdl. handle. net / 10088 / 30445" type="journal article" year="1911">Bassler, 1911</bibRefCitation>
)
</taxonomicName>
from the Lower Ordovician of
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, and
<taxonomicName id="C9F54D68FFABFFE93A8FFEED4FCCFEBD" authority="Astrova, 1965" authorityName="Astrova" authorityYear="1965" box="[134,409,311,338]" class="Stenolaemata" family="Constellariidae" genus="Lunaferamita" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="bassleri">
<emphasis id="3C81EAF9FFABFFE93A8FFEED4EA1FEBE" box="[134,244,311,337]" italics="true" pageId="9" pageNumber="570">X. bassleri</emphasis>
<bibRefCitation id="6A644B1AFFABFFE93AF5FEE24FCCFEBD" author="ASTROVA G. G." box="[252,409,311,338]" pageId="9" pageNumber="570" pagination="1 - 432" refId="ref18571" refString="ASTROVA G. G. 1965. - Morphology, history of development and system of the Ordovician and Silurian Bryozoa. Trudy Paleontologicheskogo Instituta Akademii Nauk SSSR 106: 1 - 432 [in Russian]." type="journal article" year="1965">Astrova, 1965</bibRefCitation>
</taxonomicName>
from the Middle Ordovician of
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. The
<typeStatus id="D14E8849FFABFFE93B04FE824F6EFE9E" box="[269,315,343,369]" pageId="9" pageNumber="570">type</typeStatus>
species
<taxonomicName id="C9F54D68FFABFFE93B9CFE8D4C43FE9E" baseAuthorityName="Bassler" baseAuthorityYear="1911" box="[405,534,344,369]" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="primaeva">
<emphasis id="3C81EAF9FFABFFE93B9CFE8D4C43FE9E" box="[405,534,344,369]" italics="true" pageId="9" pageNumber="570">X. primaeva</emphasis>
</taxonomicName>
reveals large acanthostyles with centres of dark colour (
<bibRefCitation id="6A644B1AFFABFFE9380AFEA24C8DFE7E" author="UTGAARD J." box="[515,728,375,401]" pageId="9" pageNumber="570" pagination="357 - 439" refId="ref23420" refString="UTGAARD J. 1983. - Systematic descriptions for the Order Cystoporata, in ROBISON R. A., (ed), Treatise on Invertebrate Paleontology. Part G (1): Bryozoa (revised). Geological Society of America and University of Kansas Press, Boulder: 357 - 439." type="book chapter" year="1983">Utgaard 1983: 377</bibRefCitation>
, fig. 169). In contrast, acanthostyles in
<taxonomicName id="C9F54D68FFABFFE93BFAFE424C2DFE5F" authorityName="Bassler" authorityYear="1952" box="[499,632,407,432]" class="Stenolaemata" family="Xenotrypidae" genus="Hennigopora" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="genus">
<emphasis id="3C81EAF9FFABFFE93BFAFE424C2DFE5F" box="[499,632,407,432]" italics="true" pageId="9" pageNumber="570">Hennigopora</emphasis>
</taxonomicName>
have distinct hyaline cores, like in present material.
<taxonomicName id="C9F54D68FFABFFE9381DFE624D52FE3F" authority="Ernst &amp; Carrera, 2022" authorityName="Ernst &amp; Carrera" authorityYear="2022" box="[532,775,439,464]" class="Stenolaemata" family="Xenotrypidae" genus="Xenotrypa" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="argentinensis" status="sp. nov.">
<emphasis id="3C81EAF9FFABFFE9381DFE624D52FE3F" box="[532,775,439,464]" italics="true" pageId="9" pageNumber="570">Xenotrypa argentinensis</emphasis>
</taxonomicName>
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differs from
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<emphasis id="3C81EAF9FFABFFE93B59FE024F84FE1F" box="[336,465,471,496]" italics="true" pageId="9" pageNumber="570">X. primaeva</emphasis>
</taxonomicName>
and
<taxonomicName id="C9F54D68FFABFFE93800FE024C26FE1F" authorityName="Astrova" authorityYear="1965" box="[521,627,470,496]" class="Stenolaemata" family="Constellariidae" genus="Lunaferamita" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="bassleri">
<emphasis id="3C81EAF9FFABFFE93800FE024C26FE1F" box="[521,627,470,496]" italics="true" pageId="9" pageNumber="570">X. bassleri</emphasis>
</taxonomicName>
in its smaller autozooecial apertures (aperture width at average
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vs
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in
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<emphasis id="3C81EAF9FFABFFE93B2BFDC24FCAFDDF" box="[290,415,535,560]" italics="true" pageId="9" pageNumber="570">X. primaeva</emphasis>
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;
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vs
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in
<taxonomicName id="C9F54D68FFABFFE93AA8FDE24F5CFDBF" authorityName="Astrova" authorityYear="1965" box="[161,265,566,592]" class="Stenolaemata" family="Constellariidae" genus="Lunaferamita" higherTaxonomySource="CoL,GBIF" kingdom="Animalia" order="Cystoporida" pageId="9" pageNumber="570" phylum="Bryozoa" rank="species" species="bassleri">
<emphasis id="3C81EAF9FFABFFE93AA8FDE24F5CFDBF" box="[161,265,566,592]" italics="true" pageId="9" pageNumber="570">X. bassleri</emphasis>
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) as well as in more abundant acanthostyles and abundant diaphragms in autozooecia.
</paragraph>
</subSubSection>
</treatment>
</document>