title: Maastrichtian-Danian boundary deposits of the Central Crimea: new data on calcareous nanoplankton
abstract: Information on the structure features as well as new data on the distribution of calcareous nanoplankton (NP) from the Cretaceous-Paleogene boundary deposits of the Central Crimea is given. There is a rich complex of Cretaceous NP in both Maastrichtian and Danian rocks. Danian NP is sparse, poor preserved or absent. Lower Maastrichtian species Tranolithus orionatus (=Tranolithus phacelosus Stover) unknown in the Upper Maastricht of European sections and described only from the Upper Maastricht o
journal: Moscow University Bulletin Series 4 Geology