| details |
Oligocene |
|
USSR(Siberia) |
Volkova,V.S. et al. Problems of Mesozoic and Cenozoic palynology of Siberia. |
1971 |
| 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 |
| details |
Middle Oligocene |
Late Oligocene |
USSR(Siberia) |
Levina,A.P. et al. Cenozoic deposits in the West and South-West of the Siberian Platform |
1980 |
| details |
Oligocene |
|
USSR(Krasnoyarsk Kray) |
Kulkova,I.A. et al. New data on the palynology of Oligocene formations of the Balsko-Rybinka Basin (Lower Angara). (In: Palynology of the Cenozoic of Siberia. V.S.Volkova, editor) |
1975 |