Foraminifera taxon details

Darvasoschwagerina Leven & Davydov, 2001 †

1063591  (urn:lsid:marinespecies.org:taxname:1063591)

accepted
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marine, brackish, fresh, terrestrial
fossil only
Leven, E.; Davydov, V. Y. (2001). Stratigraphy and fusulinids of the Kasimovian and lower Gzhelian (Upper Carboniferous) in the Southwestern Darvaz (Pamir). <em>Rivista Italiana di Paleontologia e Stratigrafia.</em> 107(1): 3-46., available online at https://doi.org/10.13130/2039-4942/5422
page(s): p. 40 [details] Available for editors  PDF available [request]
Original description Diagnosis. Shell nedium to large, very inflated-fusiform to almost subglobular with slightly to strongly sometines sharply...  
Original description Diagnosis. Shell nedium to large, very inflated-fusiform to almost subglobular with slightly to strongly sometines sharply pointed poles. lnitial volution ovoid. Shell elongates gradually attaining inflated-fusiform outline beginning from second-third volution. Proloculus minute. Early 1-4 volutions coiled tightly, succeeding volutions loosely to very loosely. Transition between tightly and loosely coiled volutions is very short. Spirotheca moderately thick, composed of thin, dense tectum, fine alveolar keriotheca and discontinuous outerer tectoriurn, which usually occurs only ìn 3-4 inner volutions. In early volutions keriotheca is poorly defined. Septa thìn, intensely and deeply but irregularly fluted from pole to pole in all volutions, forrning in axial sections continuous interlacing particularly along axis. Tunnel narrow and low, well defined predominantly in early volutions. Weak chomata present only in the juvenarium.
Occurrence: Japan, Donets Basìn; Upper Carboniferous, upper Kasimovian (?), lower Gzhelian. Darvaz, lower Gzhelian.
(Leven and Davydov (2001)). [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Darvasoschwagerina Leven & Davydov, 2001 †. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=1063591 on 2026-05-13
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2018-03-06 10:57:31Z
created

original description Leven, E.; Davydov, V. Y. (2001). Stratigraphy and fusulinids of the Kasimovian and lower Gzhelian (Upper Carboniferous) in the Southwestern Darvaz (Pamir). <em>Rivista Italiana di Paleontologia e Stratigrafia.</em> 107(1): 3-46., available online at https://doi.org/10.13130/2039-4942/5422
page(s): p. 40 [details] Available for editors  PDF available [request]
From editor or global species database
Original description Diagnosis. Shell nedium to large, very inflated-fusiform to almost subglobular with slightly to strongly sometines sharply pointed poles. lnitial volution ovoid. Shell elongates gradually attaining inflated-fusiform outline beginning from second-third volution. Proloculus minute. Early 1-4 volutions coiled tightly, succeeding volutions loosely to very loosely. Transition between tightly and loosely coiled volutions is very short. Spirotheca moderately thick, composed of thin, dense tectum, fine alveolar keriotheca and discontinuous outerer tectoriurn, which usually occurs only ìn 3-4 inner volutions. In early volutions keriotheca is poorly defined. Septa thìn, intensely and deeply but irregularly fluted from pole to pole in all volutions, forrning in axial sections continuous interlacing particularly along axis. Tunnel narrow and low, well defined predominantly in early volutions. Weak chomata present only in the juvenarium.
Occurrence: Japan, Donets Basìn; Upper Carboniferous, upper Kasimovian (?), lower Gzhelian. Darvaz, lower Gzhelian.
(Leven and Davydov (2001)). [details]
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