Pterorrhiza densa n.sp. (Tetracoralla) from the Lower Givetian of Skały (Holy Cross Mountains)

Abstract

Pterorrhiza densa n.sp. (Tetracoralla) z dolnego zywetu Skał (Góry Świętokrzyskie) Pterorrhiza densa n. sp. described below occurs in the Lower Givetian Shales with Microcyclus in Skały. Morphology and ontogenesis of this species are studied.