| details |
Frasnian |
|
USSR(European) |
Menner,V.V. The spore-pollen analysis method of direct correlation of strata of diverse facies. Chapter 2: Biostratigraphic principles of correlation of marine, lagoon and continental formations. |
1962 |
| details |
Early Frasnian |
|
USSR(Urals) |
Pykhova,N.G. Results of palynological investigation of Carbonate Members of the Upper Devonian of Western Bashkiria and other Regions of the Russian Platform. (In: Scientific-Technical collection on Petroleum production) |
1968 |
| original |
Early Frasnian |
|
USSR(Bashkir ASSR) |
Pykhova,N.G. Results of palynological study of Carbonate Parts of the Upper Devonian Bashkiria and other Regions of the Russian Platform |
1968 |
| details |
Early Frasnian |
|
USSR(Bashkir ASSR) |
Pykhova,N.G. Results of palynological study of Carbonate Parts of the Upper Devonian Bashkiria and other Regions of the Russian Platform |
1968 |
| details |
Middle Frasnian |
|
Russia(Urals) |
Pershina,A.I. et al. The biogeographical zonation of the European North of the USSR (the Devonian). |
1976 |