New species of Cretaceous oyster from Plaňany near Kolín


Bořivoj Záruba

Geoscience Research Reports 35, 2002 (GRR for 2001), pages 110–111
Map sheets: Nymburk (13-14)

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A new genus and species of Cretaceous oyster, Pycnogyra sulcata gen. et sp. n., is described from the Lower Turonian of Bohemian Cretaceous Basin. The new genus distinguishes itself from all other genera of grypheoidal oysters by deep radial posterior sulcus and well-detached posterior flange.