| details |
Late Eocene |
Early Oligocene |
USSR(Kazakh SSR) |
Panova,L.A. New data on Paleogene and Neogene spore pollen complexes of the Zaisan Depression, (Eastern Kazakhstan). (In: Biostratigraphical Symposium No.1.) |
1965 |
| original |
Early Oligocene |
|
USSR(Kazakh SSR) |
Andreeva,E.M. et al. Palaeopalynology. (Three Volumes: Volume I: Methods. Volume II: Complexes of palynomorphs of the Precambrian-Holocene of the USSR. Volume III: Figures and Plates. Editor-I.M. Pokrovskaya) |
1966 |
| details |
Early Oligocene |
|
USSR(Kazakh SSR) |
Bronevoy,V.A. et al. Correlation of Oligocene deposits of different facies in Western Kazakhstan. (In: Geology and Useful Fossils from the Turgai Basin) |
1971 |