| details |
Oligocene |
|
USSR(Urals) |
Agranovskaya,I.A. et al. Oligocene spore-pollen complexes of the northern and Middle Urals |
1956 |
| details |
Early Oligocene |
|
USSR(Kazakh SSR) |
Abuzyarova,R.Y. Results of spore-pollen investigations of Oligocene deposits of Shintuzsaya (Turgay) |
1955 |
| details |
Middle Oligocene |
|
USSR(Kazakh SSR) |
Abuzyarova,R.Y. et al. Spore-pollen complex of the Region of Akmola. |
1955 |
| details |
Middle Oligocene |
|
USSR(Kazakh SSR) |
Abuzyarova,R.Y. Spore-pollen complexes of the Indrikoteriev Suite of the Akmol, (Turgay Basin). |
1958 |