| details |
Early Tournaisian |
Early Visean |
USSR(Russian Platform) |
Byvsheva,T.V. Palynological description and stratigraphy of the Tournaisian and Lower and Middle Visean deposits of the eastern Regions of the Russian Platform. |
1971 |
| original |
Tournaisian |
|
USSR(Saratov) |
Byvsheva,T.V. Additional information on the spore-pollen picture of terrigenous Lower Carboniferous deposits in the Volga-Ural District. |
1972 |
| details |
Early Visean |
|
USSR(Permsk Oblast) |
Burilova,R.V. Stratigraphy of Visean terrigenous deposits of the Southern Part of the Kizelov Region. (In: Type sections of the Carboniferous of the Urals.) |
1979 |