Please use this identifier to cite or link to this item: http://ea.donntu.edu.ua:8080/jspui/handle/123456789/22774
Title: Early Bashkirian Rugosa (Anthozoa) from the Donets Basin, Ukraine. Part 3. On the genera Cyathaxonia Michelin, 1847 and BarytichismaMoore and Jeffords, 1945
Authors: Fedorowski, Jerzy
Vassilyuk, Nina P.
Keywords: Cyathaxonia; Barytichisma; Taxonomy; Morphology; Relationships.
Issue Date: 2011
Publisher: Acta Geologica Polonica
Series/Report no.: ;Vol. 61 , No. 2
Abstract: Fedorowski, J. and Vassilyuk, N.P. 2011. Early Bashkirian Rugosa (Anthozoa) from the Donets Basin, Ukraine. Part 3. On the genera Cyathaxonia Michelin, 1847 and Barytichisma Moore and Jeffords, 1945. Acta Geologica Polonica, 61 (2), 133–152. Warszawa. The genus Cyathaxonia Michelin, 1847 is determined to be one of only two possible genera belonging in the family Cyathaxonidae Milne Edwards and Haime, 1850. This detailed study of a new species, Cyathaxonia nodosa, proves the origin of the columella independent of major septa, as demonstrated in crossed nicols. The inner margins of the major septa retreat from the corallite axis in the late neanic growth stage. The presence of a circulotheca is considered to be an important feature of this genus. Barytichisma represented by Barytichisma sp, is placed in the family Stereophrentidae Fomichev, 1953.
Description: Приводится подробное описание нескольких видов рода Bashkirian и Cyathaxonia, представляющих интерес для восстановления эволюции начала нового этапа развития каменноугольной фауны.
URI: http://ea.donntu.edu.ua/handle/123456789/22774
Appears in Collections:Наукові статті кафедри геології

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