| original |
Tournaisian |
Visean |
USSR(European) |
Lyuber,A.A. et al. Classification and stratigraphic value of spores of some Carboniferous Coal deposits in the USSR. |
1938 |
| original |
Early Carboniferous |
|
USSR(Russian Platform) |
Lyuber,A.A. et al. Atlas of microspores and pollen of the Paleozoic of the USSR. |
1941 |
| details |
Tournaisian |
Visean |
USSR(European) |
Potonie,R. et al. The spore dispersae of the Rhur Carboniferous, their morphography and stratigraphy with reviews of species of other areas.Part 2 |
1956 |
| details |
Early Carboniferous |
|
USSR(Kazakh SSR) |
Bulekbaev,S.E. et al. Carboniferous and Permian deposits in the eastern part of the Pre-Kaspian Depression |
1967 |