New observations on the holopodid crinoid genus Cyathidium Steenstrup from the lower Turonian of the Bohemian Cretaceous Basin, Czech Republic

被引：3

作者：

Zitt, Jiri ^{[1
]}

Vodrazka, Radek ^{[1
]}

Zagorsek, Kamil ^{[2
]}

机构：

[1] AS CR, Inst Geol, Vvi, Prague 16502 6, Czech Republic

[2] Natl Museum, Prague 11579 1, Czech Republic

来源：

CRETACEOUS RESEARCH | 2014年 / 51卷

关键词：

Cyrtocrinoidea; Growth; Taphonomy; Palaeoecology; Upper Cretaceous; FORESTI ECHINODERMATA; CYRTOCRINIDA; HOLOPUS; NOV;

D O I：

10.1016/j.cretres.2014.05.019

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

New observations on Cyathidium aff. depressum Sieverts from the lower Turonian of the Bohemian Cretaceous Basin are presented. The growth of individual thecae (three different modes) and fusion of primibrachials (IBr1 and IBr2), as well as the taphonomy, palaeoecology and sedimentary environment have been studied. Thecae are often encrusted by numerous episkeletozoans with a predominance of bryozoans. Skeletal features of the present material (thecae, brachials) morphologically differ in part from those of typical C. depressum Sieverts from the upper Cenomanian of northwest Germany, and similarities to C. holopus from the middle Danian of Denmark are apparent. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：56 / 69

页数：14

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