| details |
Westphalian A |
Stephanian |
USSR(Rostov) |
Egorov,A.I. et al. Spores and pollen of Middle Carboniferous deposits of the Don Basin. |
1971 |
| details |
Late Permian |
|
USSR(Krasnoyarsk Kray) |
Orlova,E.F. et al. Upper Permian and Triassic stratigraphy of rocks from the southeast part of the Tungussian Syneclise. |
1974 |
| details |
Cretaceous |
|
USSR(Kazakh SSR) |
Chepikov,K.R. New data on microfossils in the crude oils of European USSR. |
1963 |
| details |
Tatarian |
|
USSR(Far East) |
Hart,G.F. The biostratigraphy of Permian palynofloras. |
1970 |
| details |
Permian |
|
USSR(Evenki Nat.Okrug) |
Medvedeva,A.M. Stratigraphic subdivision of lower horizons of the Tunguska Series by spore-pollen analysis. |
1960 |