| details |
Middle Oligocene |
Late Oligocene |
USSR(Ukrainian SSR) |
Zosimovich,V.Y. A boundary of Oligocene and Miocene in the Boreal Province of the East-European Platform |
1991 |
| details |
Late Eocene |
|
USSR(Ukrainian SSR) |
Korallova,V.V. Palynological characteristics of the Mandrik strata of the Upper Eocene in the environs of the City of Dnepropetrovsk |
1975 |
| details |
Late Sarmatian |
|
USSR(Ukrainian SSR) |
Ananova,E.N. The pollen flora from the Early Sarmation deposits of northern Asov Region and the Lower Don River Basin. |
1973 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |
| details |
Middle Oligocene |
|
USSR(Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |
| details |
Late Oligocene |
|
USSR(Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |
| details |
Eocene |
|
USSR(Yakut ASSR) |
Goncharov,V.F. et al. On the Eocene age of Tastakh series of Yan-Indigirka Lowland |
1970 |