Emsian-Eifelian lingulate brachiopods from the Daleje-Třebotov Formation (Třebotov and Suchomasty limestones) and the Choteč Formation (Choteč and Acanthopyge limestones) from the Prague Basin; the Czech Republic


Authors: Mergl M, Vodražkova S

Published in: Bulletin of Geosciences, volume 87, issue 2; pages: 315 - 332; Received 7 July 2011; Accepted in revised form 11 January 2012; Online 29 March 2012

Keywords: Brachiopoda, Linguliformea, Biernatidae, Opsiconidion, Orbaspina, Emsian, Eifelian, Basal Choteč Event, Prague Basin,

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Taxonomic composition and stratigraphic distribution of lingulate brachiopod taxa around the Emsian/Eifelian boundary of the Prague Basin were examined. Twelve species have been determined and the presence of others is suggested. The prevalence of micromorphic biernatids, Havlicekion and Opsiconidion, in all the studied samples is significant. A mode of life for biernatids, especially from the genus Opsiconidion, is discussed. A new Devonian occurrence of the siphonotretid Orbaspina is recorded. Lingulate brachiopods do not display any significant change around the Emsian/Eifelian boundary or at the Basal Choteč Event (Middle Devonian, Eifelian, costatus Zone) and thus confirm the general uniformity of lingulate faunas in the Lower and early Middle Devonian.


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