Upper Cretaceous calcareous nannofossil biostratigraphy of the East European Platform: A proposed regional nannofossil zonation scheme and correlation with foraminifera and radiolarian zonesстатья
Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Аннотация:The Upper Cretaceous deposits are broadly distributed over the territory of the EastEuropean Platform (EEP), yet they cannot be reliably subdivided on the basis of thecalcareous nannofossils using the existing global and provincial zonal schemes due tothe rarity or absence of some index species in the East European palaeobiogeographicprovince. An original regional biostratigraphic scheme for the EEP is proposed, basedon the analysis of the stratigraphic distribution of the calcareous nannofossils from theMoscow Basin, the Central Russian Upland and the Ulyanovsk–Saratov trough. Thenewly proposed scheme is compared to other Upper Cretaceous zonations for the EEP,based on foraminifera and radiolaria.