Abstract

Gives data of Callovian calcareous nannoplankton study of sections of the Dnieper-Donets Basin, northwestern Donbass, the Crimean Mountains. Analysis of the distribution of nanofossils in the studied sections, as well as sections of the Moscow syncline, the Saratov Volga region and Kanev dislocations can distinguish in the Callovian two nannoplankton zones: Stephanolithuin hexum (top Batonian – Lower Callovian) и Sephanolithion bigoti (middle – upper Callovian). Subspecies Sephanolithion bigoti maximum in Callovian deposits of Ukraine (and the South East European platform) is not defi ned.

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