Odontopleurid trilobites of the Katian/Hirnantian boundary interval in the Prague Basin (Bohemia)

Bulletin of geosciences

Mergl M¹ 

关键词: Diacanthaspis;    odontopleurids;    Ordovician;    Katian;    Hirnantian;    Prague Basin;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

Anewassociationofodontopleuridtrilobitesisdescribedfromcalcareousclaystonetomarlstone,theso-called“PerníkBed”,ofthetopmostpartoftheKrálůvDvůrFormation.TheassociationincludesDiacanthaspiskrizisp.nov.,associatedwithBojokoralaspisperegrina(Barrande,1872)andotherrareandpoorlyknownodontopleuridspreliminaryreferredtoChlustiniaPřibylVaněk,1965,ProceratocephalaPrantlPřibyl,1949andEoleonaspisSheng,1974.ThisassociationindicatesacloserrelationshiptothelateKatianandearlyHirnantianodontopleuridfaunasofBalticaandAvaloniathantothoseofArmorica(Spain,Sardinia),wherethegeneraCalipernurusWhittington,1956a,DiacanthaspisWhittington,1941,DicranurusConrad,1841,HispaniaspisHammann,1992,RadiaspisRichterRichter,1917,andWhittingtoniaPrantlPřibyl,1949arepresentincarbonaticbuildupsofthelateKatianage.Itisassumedthatthedepositionof“PerníkBed”isaresultoftheearlyHirnantiansealevelloweringandnotofthewarmingrelatedtotheBodaevent.

【 授权许可】

Unknown