Taxonomic Position of Chivatschella Zavodowsky (Rhynchonellida, Brachiopoda)

Taxonomic Position of Chivatschella Zavodowsky (Rhynchonellida, Brachiopoda)

The type specimens of Chivatschella orotschensis Zavodowsky, 1968 from the Upper Permian of North-East Asia were restudied using X-ray microtomography. The study revealed previously unknown narrow spondylium in the ventral valve and thickened septum and wide open septalium in the dorsal valve. Based...

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Veröffentlicht in:Paleontological journal 2019-05, Vol.53 (3), p.270-273
1. Verfasser: Pakhnevich, A. V.
Format: Artikel
Sprache:eng
Schlagworte:
Earth and Environmental Science
Earth Sciences
Marine invertebrates
Museums
Paleontology
Permian
Rhynchonellida
Septum
Surveys
Type specimens
Valves
X ray microtomography
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Zusammenfassung:The type specimens of Chivatschella orotschensis Zavodowsky, 1968 from the Upper Permian of North-East Asia were restudied using X-ray microtomography. The study revealed previously unknown narrow spondylium in the ventral valve and thickened septum and wide open septalium in the dorsal valve. Based on the new data the monotypic genus Chivatschella Zavodowsky, 1968 is referred to the subfamily Psilocamarinae, family Psilocamaridae, superfamily Stenoscismatoidea (order Rhynchonellida).
ISSN:0031-0301
1555-6174
DOI:10.1134/S0031030119030109