| details |
Middle Oligocene |
Middle Miocene |
USSR(Yakut ASSR) |
Fradkina,A.F. The geological sections and their palynological characteristics. (In: Palynoflora of the Neogene of Northeast Asia. (Yakut, Priokhotsk, Chukotka, Kamchatka. A.F.Fradkina) |
1983 |
| details |
Middle Miocene |
|
USSR(Sakhalin Oblast) |
Fradkina,A.F. The geological sections and their palynological characteristics. (In: Palynoflora of the Neogene of Northeast Asia. (Yakut, Priokhotsk, Chukotka, Kamchatka. A.F.Fradkina) |
1983 |
| details |
Middle Oligocene |
|
USSR(Bashkir ASSR) |
Kozyar,L.A. The application of spore-pollen analysis in paleoecological and paleobiogeographical investigation of Cenozoic deposits. (In: Problems of Paleobiogeography) |
1978 |
| details |
Early Oligocene |
|
USSR(Ukrainian SSR) |
Zosimovich,V.Y. et al. The boundary between Upper Eocene and Oligocene in the Kiev Dnieper area as based on palynological data. |
1979 |
| details |
Maastrichtian |
|
USSR(Siberia) |
Stanley,E.A. Maestrichtian plant microfossil assemblages and their paleogeographic and paleoclimatic implications for Mesozoic time |
1970 |