Conodont biostratigraphy of the Givetian/Frasnian boundary beds at Kostomłoty in the Holy Cross Mts

Grzegorz Racki


The Upper Givetian fossiliferous limestones and marls exposed at Kostomłoty in the Holy Cross Mts, Central Poland, contain a rich conodont fauna which evidences the varcus through disparilis Zones. These zones have hitherto been unknown in the Holy Cross region, and the Givetian/Frasnian boundary runs within the overlying marl-shaly Szydłówek Beds. The Kostomłoty quarries are thought to be the key sections for the studies of this stage .boundary in the Holy Cross Mts.

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