| details |
Early Oligocene |
Middle Oligocene |
USSR(Kazakh SSR) |
Boytsova,E.P. Fossil pollen of the Quercus species and its importance for the subdivision of the Paleogene deposits of the of the Western Siberian Lowland and western Kazakhstan. (In: On the Methods in Paleopalynological Studies.) |
1966 |
| details |
Late Oligocene |
|
USSR(WSL) |
Boytsova,E.P. Fossil pollen of the Quercus species and its importance for the subdivision of the Paleogene deposits of the of the Western Siberian Lowland and western Kazakhstan. (In: On the Methods in Paleopalynological Studies.) |
1966 |
| details |
Oligocene |
|
USSR(Primorsk Kray) |
Gromova,I.S. Palynological characteristics of the coal layers of the Kainozoisk Region Rettikhovki (South Primorsk). (In: Spores and pollen of Phanerozoic deposits. L.A. Panova et al, editors) |
1984 |
| details |
Middle Oligocene |
Late Oligocene |
USSR(Ukrainian SSR) |
Mikhelis,A.A. et al. The fossil pollen and their significance for stratigraphy of the Paleogene-Neogene desposits of Donbass. |
1974 |
| details |
Oligocene |
|
USSR(Siberia) |
Aleksandrova,A.N. et al. Palynoflora of Central Siberia at the Eocene-Oligocene Border |
1985 |
| details |
Early Miocene |
|
USSR(Kazakh SSR) |
Panova,L.A. et al. Palynostratigraphy of Neogene deposits. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |