title: Особливості розвитку вапнякового нанопланктону півдня і сходу України в крейдовому періоді
abstract: For the Cretaceous sections in eastern and southern Ukraine some changes in taxonomic composition and quantitative ratios between certain species of calcareous nannofossils have been found. The sections: north-west of Donbass, Dnieper-Donets Basin, Black Sea Depression, the plain and the mountain Crimea and Black Sea shelf were studied. A completely unique stage of nannoplankton development has been noted in Cretaceous period. At that time this group reached both qualitative and quantitative max
journal: Вісник Харківського національного університету імені В.Н. Каразіна, cерія "Геологія. Географія. Екологія"