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<emphasis id="B94CEAEC022EB54767CBFAE2596FDE29" bold="true" box="[166,317,1330,1354]" italics="true" pageId="4" pageNumber="48">Gothograptus</emphasis>
aff.
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, BATES, ZALASIEWICZ et RADZEVIČIUS, 2019
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<figureCitation id="13032A7B022EB5476632FAA3599CDEE8" box="[351,462,1395,1419]" captionStart="Text-fig" captionStartId="5.[147,228,1110,1131]" captionTargetBox="[147,1462,151,1089]" captionTargetId="figure-372@5.[147,1462,151,1950]" captionTargetPageId="5" captionText="Text-fig. 4. Retiolitid graptolites from the upper lundgreni Biozone of the Kosov section. ac Gothograptus aff. domeyki KOZŁOWSKA et al., 2019: a PŠ 3869, finite rhabdosome in profile with small nassa-type genicular hoods on 1st and 2nd pair of thecae, sample K2/18; b PŠ 3905, specimen in latero-ventral view showing narrow orifices, thickened thecal lips and very small genicular hood on th 1, sample K2/22; c PŠ 3877b, specimen in obverse view with small genicular hoods on th11 and th12, and small lateral spines in the next two thecae, sample K2/15. df Gothograptus kozlowskii KOZŁOWSKA-DAWIDZIUK, 1990: d PŠ 3878, specimen showing broadened bases of the apertural spines, sample K2/11; e PŠ 3870, finite rhabdosome in obverse profile view, sample K2/13; f PŠ 3868, latero-ventral (subscalariform) view, sample K2/21. g Semigothograptus meganassa (RICKARDS et PALMER, 2002): PŠ 3863, sample K2/6. All specimens × 10, scale bar 1 mm." figureDoi="http://doi.org/10.5281/zenodo.4586649" httpUri="https://zenodo.org/record/4586649/files/figure.png" pageId="4" pageNumber="48">Text-fig. 4</figureCitation>
ac
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1952
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<taxonomicName id="4C384D7D022EB54767D8FA715968DED5" authorityName="FRECH" authorityYear="1897" box="[181,314,1441,1462]" class="Graptolithina" family="Retiolitidae" genus="Gothograptus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Graptoloidea" pageId="4" pageNumber="48" phylum="Hemichordata" rank="genus">Gothograptus</taxonomicName>
nassa
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(
<bibRefCitation id="EFA94B0F022EB54766E3FA725A5BDED4" author="Holm, G." box="[398,521,1441,1463]" pageId="4" pageNumber="48" pagination="1 - 34" refId="ref9875" refString="Holm, G. (1890): Gotlands graptoliter. - Svenska veten- skap-akademie Handlingar, 16: 1 - 34." type="journal article" year="1890">HOLM, 1890</bibRefCitation>
); Bouček and Münch, pp. 1115, fig. 2ai, (non 3ad), pl. 1, figs 911.
</paragraph>
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aff. 2019
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<emphasis id="B94CEAEC022EB54767A4FA0D59F4DE91" box="[201,422,1501,1522]" italics="true" pageId="4" pageNumber="48">Gothograptus domeyki</emphasis>
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; Kozłowska et al., figs
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, 10b.
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<paragraph id="8B8736FE022EB54767FDF9F8592DDDC2" blockId="4.[106,745,1576,1697]" pageId="4" pageNumber="48">
M a t e r i a l. More than one hundred flattened, more or less complete rhabdosomes from the upper
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Biozone of the Kosov 2 section (samples K2/23K2/11; see
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: fig. 2).
</paragraph>
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D e s c r i p t i o n. Mature, up to
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long rhabdosome has 1012 pairs of thecae and well-developed appendix. The rhabdosome is
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wide (M =
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, n = 14) in its parallel-sided proximal and mesial part, then slowly tapers to
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just below the appendix. 2TRD increases from
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at th2 (M =
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, n = 12) to
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(M = 1.73, n = 14) in th56. Small but distinct genicular hoods of
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-
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are developed on the first and, in some specimens also second (
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) pair of thecae. The next pair of thecae possesses small, laterally situated spines. Subsequent thecal orifices lack any genicular processes. The orifices are rather narrow, broadly sub- rectangular or somewhat pyramidal, with markedly thickened apertural lips (
<figureCitation id="13032A7B022EB54764A0FF685C1CDBB3" box="[973,1102,184,208]" captionStart="Text-fig" captionStartId="5.[147,228,1110,1131]" captionTargetBox="[147,1462,151,1089]" captionTargetId="figure-372@5.[147,1462,151,1950]" captionTargetPageId="5" captionText="Text-fig. 4. Retiolitid graptolites from the upper lundgreni Biozone of the Kosov section. ac Gothograptus aff. domeyki KOZŁOWSKA et al., 2019: a PŠ 3869, finite rhabdosome in profile with small nassa-type genicular hoods on 1st and 2nd pair of thecae, sample K2/18; b PŠ 3905, specimen in latero-ventral view showing narrow orifices, thickened thecal lips and very small genicular hood on th 1, sample K2/22; c PŠ 3877b, specimen in obverse view with small genicular hoods on th11 and th12, and small lateral spines in the next two thecae, sample K2/15. df Gothograptus kozlowskii KOZŁOWSKA-DAWIDZIUK, 1990: d PŠ 3878, specimen showing broadened bases of the apertural spines, sample K2/11; e PŠ 3870, finite rhabdosome in obverse profile view, sample K2/13; f PŠ 3868, latero-ventral (subscalariform) view, sample K2/21. g Semigothograptus meganassa (RICKARDS et PALMER, 2002): PŠ 3863, sample K2/6. All specimens × 10, scale bar 1 mm." figureDoi="http://doi.org/10.5281/zenodo.4586649" httpUri="https://zenodo.org/record/4586649/files/figure.png" pageId="4" pageNumber="48">Text-fig. 4b</figureCitation>
). Mature specimens have a dense reticulum of similar thickness to the clathrial framework.
</paragraph>
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R e m a r k s. The present gothograptid form differs from
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KOZŁOWSKA et al.,
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in having markedly longer finite rhabdosome, with up to 12 pairs of thecae, more widely spaced thecae and small genicular hoods developed on first, and rarely, second pair of thecae. Other characters, such as the absence of any apertural/genicular processes on most thecae and thickened apertural lips are shared with
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<emphasis id="B94CEAEC022EB54764DBFE3A5C7DD962" box="[950,1071,489,513]" italics="true" pageId="4" pageNumber="48">G. domeyki</emphasis>
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, which is known to date solely from the upper
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Biozone of
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(
<bibRefCitation id="EFA94B0F022EB5476277FDDA5BC2D921" author="Kozlowska, A. &amp; Bates, D. &amp; Zalasiewicz, J. &amp; Radzevicius, S." pageId="4" pageNumber="48" pagination="435 - 469" refId="ref10216" refString="Kozlowska, A., Bates, D., Zalasiewicz, J., Radzevicius, S. (2019): Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Balti- ca), Poland and Lithuania. - Zootaxa, 4568 (3): 435 - 469. https: // doi. org / 10.11646 / zootaxa. 4568.3.2" type="journal article" year="2019">Kozłowska et al. 2019</bibRefCitation>
). Also specimens described by
<bibRefCitation id="EFA94B0F022EB547638DFDFA5B2ED901" author="Boucek, B. &amp; Munch, A." pageId="4" pageNumber="48" pagination="1 - 151" refId="ref9613" refString="Boucek, B., Munch, A. (1952): The Central European Retiolites of the Upper Wenlock and Ludlow. - Sbornik Ustredniho ustavu geologickeho, Oddil paleontologicky, 19: 1 - 151." type="journal article" year="1952">Bouček and Münch (1952)</bibRefCitation>
from the
<emphasis id="B94CEAEC022EB5476499FD9A5C09D901" box="[1012,1115,586,610]" italics="true" pageId="4" pageNumber="48">lundgreni</emphasis>
Biozone of Bykoš and Borek localities and assigned to
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<taxonomicName id="4C384D7D022EB5476328FDBA5C8BD9E1" authorityName="FRECH" authorityYear="1897" box="[1093,1241,618,642]" class="Graptolithina" family="Retiolitidae" genus="Gothograptus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Graptoloidea" pageId="4" pageNumber="48" phylum="Hemichordata" rank="genus">Gothograptus</taxonomicName>
nassa
</emphasis>
(
<bibRefCitation id="EFA94B0F022EB5476246FDBB5DF8D9E0" author="Holm, G." box="[1323,1450,619,643]" pageId="4" pageNumber="48" pagination="1 - 34" refId="ref9875" refString="Holm, G. (1890): Gotlands graptoliter. - Svenska veten- skap-akademie Handlingar, 16: 1 - 34." type="journal article" year="1890">HOLM, 1890</bibRefCitation>
) belong to this form. All figured specimens represent mature rhabdosomes, up to
<quantity id="4CC09B1B022EB547637BFD7B5C37D9A0" box="[1046,1125,683,707]" metricMagnitude="-2" metricUnit="m" metricValue="1.3" pageId="4" pageNumber="48" unit="mm" value="13.0">13 mm</quantity>
long, 1.0
<quantity id="4CC09B1B022EB54763B2FD7B5D66D9A0" box="[1247,1332,683,707]" metricMagnitude="-3" metricUnit="m" metricValue="1.2" pageId="4" pageNumber="48" unit="mm" value="1.2">1.2 mm</quantity>
wide, with up to 12 pairs of thecae. Thecal orifices are narrow, broadly pyramidal, with thickened lips, small lateral spines in some proximal thecae but generally lacking
<emphasis id="B94CEAEC022EB5476381FCDD5D7BD847" box="[1260,1321,781,804]" italics="true" pageId="4" pageNumber="48">nassa</emphasis>
-
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hoods. Well-developed appendix and dense reticulum are consistent with full maturity of the colonies.
</paragraph>
<paragraph id="8B8736FE022EB5476437FCBD5D3BDF65" blockId="4.[820,1460,263,1030]" pageId="4" pageNumber="48">
Abundant occurrence of two early gothograptids of Baltic provenance in the upper
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graptolite Biozone of the
<collectingRegion id="49FCF81C022EB5476415FC7E5B90D8A5" box="[888,962,942,966]" country="Czech Republic" name="Praha" pageId="4" pageNumber="48">Prague</collectingRegion>
Synform is in full compliance with close links between Homerian graptolite faunas of peri-Gondwanan Europe (namely of Perunica microplate) and Baltica.
</paragraph>
</subSubSection>
</treatment>
</document>