| details |
Early Oligocene |
Middle Oligocene |
USSR(WSL) |
Panova,L.A. The Oligocene of the West Siberian Lowland. (In: Cenozoic Flora of Siberia According to Palynological Data. V.N.Sacks and V.S.Volkova, editors) |
1971 |
| details |
Oligocene |
|
USSR(Krasnoyarsk Kray) |
Laukhin,S.A. et al. Palynological characteristics of Oligocene deposits of Central Siberia. (In: Stratigraphy and Palynology of the Mesozoic and Cenozoic of Siberia. V.S.Volkova, editor) |
1979 |
| details |
Oligocene |
|
USSR(Siberia) |
Aleksandrova,A.N. et al. Palynoflora of Central Siberia at the Eocene-Oligocene Border |
1985 |
| details |
Early Oligocene |
|
USSR(Siberia) |
Kulkova,I.A. et al. Eocene and Oligocene palynofloras and climate of Central Siberia. (In: Mikrofitofossilii i stratigrafiya Mezozzoya i Kainozoya Sibiri. S.B. Shatskiy, editor) |
1988 |
| details |
Late Oligocene |
|
USSR(Kazakh SSR) |
Panova,L.A. et al. Palynostratigraphy of Paleogene deposits. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |