| details |
Middle Devonian |
|
USSR(Urals) |
Filimonova,A.B. The stratigraphic role of spores in terrigenous deposits of the Middle Devonian Staro-Oskol and Mullinsk Clastic strata in the Volga-Ural Province |
1962 |
| details |
Givetian |
|
USSR(Nenets Nat.Okrug) |
Voitovich,I.A. The stratigraphic significance of the differentiation of the Middle Devonian and Lower Part of Upper Devonian of Iman on the basis of the study of spore and pollen assemblges. |
1967 |
| details |
Middle Devonian |
|
USSR(European) |
Iilimonova,A.B. Stratigraphic importance of spores from Middle Devonian Staro-Oskol and Mullinsk Clastic strata in the Volga-Ural Province. |
1962 |