| details |
Frasnian |
|
USSR(European) |
Filimonova,A.B. Spore complexes of the Middle and Upper Devonian boundary Layers in the Volga-Ural Province. |
1957 |
| details |
Devonian |
|
USSR(Kirov) |
Shevstov,S.I. et al. Traces of Volcanic activity in the Devonian deposits of the northern part of the Kirov Region |
1961 |
| details |
Frasnian |
|
USSR(Urals) |
Lyashenko,A.I. et al. Stratigraphy and lithology. (In: Devonian Deposits of the Volga-Ural Oil and Gas Bearing Region. A.I.Lyshenko and I.G.Gassanova, editors) |
1970 |
| details |
Early Frasnian |
|
USSR(Russian Platform) |
Filippova,M.F. The Central Provinces of the Russian Platform. (In: Devonian Systems. D.V.Nalivkin et al, editors) |
1973 |