Devonian Phillipsastreid tetracorals of the genus Rozkowskaella from the Holy Cross Mountains, Poland

摘要

Solitary or weakly colonial Phillipsastreid tetracorals of the Upper Frasnian of Holy Cross Mountains, Poland, with triangular to oval shape of transverse-section and tendency towards reduction of the horseshoe dissepiments, are included here in the genus Rozkowskaella, with Rozkowskaella sandaliformis, R. cf. sandaliformis and Rozkowskaella sp.