| original |
Frasnian |
|
USSR(Latvian SSR) |
Ozolina,V.R. Spore and pollen assemblages of the Upper Devonian Ogrskiy Suite of Lativia. |
1955 |
| original |
Frasnian |
|
USSR(Latvian SSR) |
Ozolina,V.R. The spore-pollen Spectrum of Frasnian Stage deposits in the Alanda borehole. |
1961 |
| 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 |
Early Famennian |
|
USSR(Belorussian SSR) |
Nekryata,N.S. Spore assemblages of the Lower Famennian, (Intersaliferous) Strata of the Pripyat Depression and their stratigraphic significance. |
1974 |