| details |
Famennian |
|
USSR(Urals) |
Arkhangelskaya,A.D. et al. Comparison of conodont and spore biozones in Famennian deposits in the Volga-Ural oil-Gas Province |
1986 |
| details |
Frasnian |
|
USSR(Baltic) |
Kedo,G.I. et al. The Middle Devonian of the Pre-Baltic and north-east Belorussia. (In: Devon i Karbon Pribaltiki. V.S.Sorokin et al, editors) |
1981 |
| details |
Givetian |
Frasnian |
USSR(Baltic) |
Kedo,G.I. et al. The Middle Devonian of the Pre-Baltic and north-east Belorussia. (In: Devon i Karbon Pribaltiki. V.S.Sorokin et al, editors) |
1981 |
| details |
Early Frasnian |
|
USSR(Belorussian SSR) |
Golubtsov,V.K. Stratigraphic and paleontological research in Byelorussia. |
1978 |
| original |
Eifelian |
|
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 |