New data on Late Turonian crinoids from the Bohemian Cretaceous Basin, Czech Republic

Bulletin of geosciences

Žítt J¹  Vodrážka R¹ 

关键词: Echinodermata;    Crinoidea;    taxonomy;    taphonomy;    Late Turonian;    Bohemian Cretaceous Basin;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

CrinoidfaunasfromscourandburrowfillsinthebasalportionsoftheUpperTuronianTepliceFormationatthelocalityÚpohlavy,BohemianCretaceousBasin(BCB)comprisethebourgueticrinidBourgueticrinusexgr.fischeri(Geinitz,1872)representedbycups,proximaliaandcolumnalsand,incontrast,thecomatulidPlacometraexgr.laticirra(Carpenter,1880),newtotheBCB,preservedascompletecups.AnalysisofarticulatedportionsofarmsanddissociatedbrachialsintheassemblagesallowsspecimenstobeidentifiedandassignedtoBourgueticrinusexgr.fischeri?,Placometraexgr.laticirra?,Placometra?sp.and“Isocrinus”sp.Theoriginalechinodermcommunityalsoincludedanindeterminatebourgueticrinidwith“rhizocrinid”columnals.Lifehabitsandtaphonomyofthesecrinoidsarediscussed.ThetypespecimenofBourgueticrinusfischerifromsimilarcrinoidassociationsinSaxonyisinneedofrevision.

【 授权许可】

Unknown