| details |
Early Oligocene |
|
USSR(WSL) |
Boitsel,Z.A. et al. Oligocene spore-pollen complexes of the central part of the Western Siberian Lowlands |
1956 |
| details |
Late Eocene |
|
USSR(Kazakh SSR) |
Zaklinskaya,E.D. Spore-pollen spectra of the Upper Eocene of northern Priaral |
1954 |
| details |
Eocene |
Early Oligocene |
USSR(Kazakh SSR) |
Chiguryaeva,A.A. On the discovery of a microspore of Welwitschia in Eocene Beds in Kazakhstan |
1954 |
| details |
Tortonian |
|
USSR(Ukrainian SSR) |
Shchekina,N.A. Materials for the investigation of the Tortonian flora (Middle Miocene) of l'Vovskaya Oblast'. |
1954 |
| details |
Early Oligocene |
|
USSR(Pavlodarskaya) |
Zaklinskaya,E.D. Material on the history of the flora and vegetation of the Paleogene of northern Kazakhstan in the area of Pavlodar Pr-Irtish. |
1953 |
| details |
Late Eocene |
Early Oligocene |
USSR(Pavlodarskaya) |
Zaklinskaya,E.D. Material on the history of the flora and vegetation of the Paleogene of northern Kazakhstan in the area of Pavlodar Pr-Irtish. |
1953 |