| details |
Early Oligocene |
|
USSR(Pre-Baltic) |
Pokrovskaya,I.M. Eocene and Lower Oligocene spore-pollen complexes of the Prebaltic. (In: Atlas of Upper Cretaceous, Paleocene and of the USSR). |
1960 |
| details |
Middle Eocene |
Early Oligocene |
USSR(Pre-Baltic) |
Zauer,V.V. Short description of spores and pollen from Eocene and Lower Oligocene deposits of the Prebaltic. (In: Atlas of Upper Cretaceous, Paleocene and Eocene spore-pollen complexes of various Regions of the USSR). |
1960 |
| details |
Early Eocene |
|
USSR(European) |
Pokrovskaya,I.M. The palynological characteristic of the Paleogene of the South of the European part of the USSR. |
1964 |
| details |
Middle Eocene |
Late Eocene |
USSR(Kalinin) |
Pokrovskaya,I.M. et al. Palynological basis of the age of the Baltic Amber-bearing deposits |
1960 |