Calcareous nannoplankton from the uppermost Cretaceous and Paleogene deposits, of the Lublin Upland

Abstract

Abundant and well-preserved calcareous nannooplankton found in the Campanian and Maastrichtian deposids of the western part of the Lublin Upland, Central PoIand, was studied under both light and scanning electron mioroscopes. The overlying Paleocene deposits comprise very scarce and taxonomically poor calcareous nannoplanktic assemblage. Totally, 83 species are described, 3 new species including, viz. Eiffellithus multicostatus sp. n., Broinsonia cribrata sp. n., and Thoracosphaera longiuscula sp. n. Four calcareous nannoplanktic biostratigraphc zones are recognized in the uppermost Cretaceous, and two zones in the Paleocene.