| details |
Early Visean |
|
USSR(Kalinin) |
Teodorovich,G.I. et al. New data on the stratigraphy and lithology of the terrigenous deposits of the Lower Carboniferous of the Middle Volga Basin |
1958 |
| details |
Visean |
|
USSR(Bashkir ASSR) |
Teodorovich,G.I. et al. Stratigraphy of the terrigenous deposits of the Lower Carboniferous of Northwest Bashkir |
1960 |
| details |
Visean |
|
USSR(Bashkir ASSR) |
Teodorovich,G.I. et al. Stratigraphy of the terrigenous deposits of the Lower Carboniferous of Northwest Bashkir |
1960 |
| details |
Early Kazanian |
|
USSR(Orenburg) |
Gayazova,A.L. Spore-pollen complexes from the Lower Kazanian deposits of the Orenburg District. |
1974 |