| details |
Early 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 |
| details |
Tournaisian |
Visean |
USSR(Ukrainian SSR) |
Ishchenko,A.M. Spores and pollen of Lower Carboniferous deposits of the Western extension of the Donetz Basin and their values for stratigraphy. |
1956 |
| details |
Early Carboniferous |
|
USSR(Russian Platform) |
Ishchenko,A.M. Spores and pollen of Lower Carboniferous deposits of the Western extension of the Donetz Basin and their values for stratigraphy. |
1956 |