| details |
Givetian |
Early Frasnian |
USSR(Russian Platform) |
Arkhangelskaya,A.D. Identifying the Ol'khovka horizon in the Devonian of the Russian Platform. |
1963 |
| 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 |
Givetian |
|
USSR(Bashkir ASSR) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |