| details |
Late Eocene |
Early Oligocene |
USSR(Siberia) |
Lyubomirova,K.A. The vegetation of northwest Siberia in the Late Paleogene. (In: Palynology in Petroleum Geology. N.M.Ivanova, editor) |
1971 |
| details |
Middle Miocene |
|
USSR(Georgian SSR) |
Ramishvili,I.Sh. The Middle Miocene flora of Georgia based on palynological data. |
1982 |
| details |
Late Eocene |
|
USSR(Yamalo-Nenets) |
Lyubomirova,K.A. The palynological characteristics of the Chegansk horizon of North West Siberia. (In: Palynological Studies. Collected Articles. S.R.Samoilovich, editor) |
1976 |
| details |
Middle Miocene |
|
USSR(Georgian SSR) |
Ramishvili,I.Sh. The Middle Miocene flora of the Western Caucasus and the further stages of their development. |
1977 |