The first record of calcareous dinoflagellate cysts from the Upper Cretaceous of the Volga River Region.

Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections / translated from Russian

PubMedID: 27021362

Vishnevskaya VS. The first record of calcareous dinoflagellate cysts from the Upper Cretaceous of the Volga River Region. Dokl Biol Sci. 2016;466(1):12-5.
The taxonomic position of the microproblematics previously considered to be Foraminifera or Calcisphaerulidae is established. The first record from Russia of calcareous cysts of Dinoflagellata is presented. The microfossils originate from the Maastrichtian siliceous clay of the Volga River Region.