| details |
Early Oligocene |
Middle Oligocene |
USSR(Ukrainian 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 |
Middle Oligocene |
USSR(WSL) |
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 |
Norian |
Rhaetian |
USSR(Franz Josef Land) |
Dibner,V.D. et al. Data on geology and biostratigraphy of Upper Triassic and Lower Jurassic deposits of Franz-Joseph Land. (In: Symposium of Articles on Arctic Geology. B.V.Ikatshenko, editor) |
1959 |