New dinocyst species (family Ceratiaceae Willey et Hickson) from the Lower Cretaceous of Southwestern Western Siberia

Аннотация

New species of Aptian dinoflagellate cyst of the family Ceratiaceae, Endoceratium immarinum sp. nov. and Nyktericysta (Hastodinium) sibirica sp. nov., are described. These taxa interpreted as nonmarine expand the palynological characteristics of the Vikulovo Formation of Western Siberia.