| details |
Early Visean |
Middle Visean |
USSR(Urals) |
Burilova,R.V. Changes in the spore assemblages in the section of the West Urals Coal-bearing Formation as a basis for its subdivision. (In: Palynology of Proterophyte and Palaeophyte.S.N.Naumova, editor) |
1974 |
| details |
Visean |
|
USSR(Urals) |
Burilova,R.V. et al. Spore-pollen assemblages. (In: Paleontological Atlas, Carboniferous Deposits of the Urals.) |
1975 |
| details |
Visean |
|
USSR(Urals) |
Burilova,R.V. et al. Spore-pollen assemblages. (In: Paleontological Atlas, Carboniferous Deposits of the Urals.) |
1975 |
| details |
Early Visean |
Middle Visean |
USSR(Urals) |
Stanichnikova,M.S. Spores and pollen. (In: Key sections and fauna of the Visean and Namurian Stages of Middle and Southern Urals) |
1978 |