Unraveling the hidden paleobiodiversity of the Middle Devonian (Emsian) crinoids (Crinoidea, Echinodermata) from Poland

PeerJ

article

William I. Ausich¹  Mariusz A. Salamon²  Bartosz J. Płachno³  Tomasz Brachaniec²  Wojciech Krawczyński²  Andrzej Boczarowski²  Karolina Paszcza²  Magdalena Łukowiak⁴  Przemysław Gorzelak⁵ 

[1] University of Columbus;University of Silesia in Katowice;Jagiellonian University in Kraków;Insitute of Paleobiology;Insitute of Paleobiology Polish Academy of Science

关键词: Devonian;    Emsian;    Poland;    Crinoids;    Echinodermata;    Diversity;   

DOI  :  10.7717/peerj.12842

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Most previous publications on Devonian crinoids from the Holy Cross Mountains in Poland have concentrated on crinoid columns, and until now, little has been published about crinoid cups and calyxes. Herein, five crinoid taxa are described from an abundant occurrence of aboral cups and partial crowns from the Bukowa Góra Member (Emsian) in the Holy Cross Mountains of southern Poland. The following taxa are described: Bactrocrinites sp., Codiacrinus sevastopuloi sp. nov., Halocrinites geminatus (Bohatý, 2005), Halocrinites schlotheimii Steininger, 1831, and a single brachial plate from a flexible crinoid placed in Flexibilia incertae sedis. Simple discoid holdfasts are also present encrusted to cylindrical stromatoporoids. These taxa are the first crinoids described from the remains of partial crowns from Emsian strata of Poland.

【 授权许可】

CC BY