| details |
Givetian |
|
USSR(Russian Platform) |
Chibrikova,E.V. et al. Stratigraphy and correlation of Lower and Middle Devonian deposits of the USSR based on palynological data. (Materials of the Palynological Colloquim Held in Ukhta, Oct.1973). (In: Geology and hydrocarbons of the North-East of the European part of the USSR) |
1977 |
| details |
Frasnian |
|
USSR(Belorussian SSR) |
Nekryata,N.S. Spore assemblages of the Lower Famennian, (Intersaliferous) Strata of the Pripyat Depression and their stratigraphic significance. |
1974 |
| original |
Frasnian |
|
USSR(Russian Platform) |
Naumova,S.N. Spore-pollen complexes of the Upper Devonian of the Russian Platform and their significance for stratigraphy |
1953 |