| 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 |
| details |
Early Frasnian |
|
USSR(Komi ASSR) |
Kossovoy,L.S. et al. Upper Devonian spore-pollen complexes of the eastern Slope of North Timan and their biostratigraphic significace. |
1963 |