| details |
Early Frasnian |
|
USSR(Bashkir ASSR) |
Arkhangelskaya,A.D. A new spore complex and the problem of the boundary between the Middle and the Upper Devonian in the Volga-Ural Region. |
1962 |
| details |
Early Frasnian |
|
USSR(Orenburg) |
Arkhangelskaya,A.D. A new spore complex and the problem of the boundary between the Middle and the Upper Devonian in the Volga-Ural Region. |
1962 |
| details |
Early Frasnian |
|
USSR(Kuybyshev) |
Arkhangelskaya,A.D. A new spore complex and the problem of the boundary between the Middle and the Upper Devonian in the Volga-Ural Region. |
1962 |
| details |
Frasnian |
|
USSR(Permsk Nat.Okrug) |
Araslanova,R.M. The stratigraphic distribution of spores in Devonian terrigenous deposits of the Perm Region of the Kama. |
1973 |