| original |
Cenomanian |
Danian |
USSR(Siberia) |
Skuratenko,A.V. Some new spore species of Davalliaceae and Aspidiaceae from the Upper Cretaceous-Paleogene of Western Siberia. |
1968 |
| details |
Turonian |
|
USSR(Siberia) |
Grigoreva,K.N. Spores and pollen from the Senonian sediments of the West Siberian Lowland. (In: Stratigraphic and Paleontological Material of Siberia. V.I.Krasbov and Y.V.Teslanko, editors) |
1969 |
| details |
Turonian |
|
USSR(Yamalo-Nenets) |
Amon,E.O. et al. Upper Cretaceous biostratigraphy of the Synya River (Cis-Polar Transural) |
1985 |