| details |
Tatarian |
|
USSR(Komi ASSR) |
Hart,G.F. The biostratigraphy of Permian palynofloras. |
1970 |
| details |
Tatarian |
|
USSR(Arkhangelsk Oblast) |
Plotnikov,M.A. Tatarian Stage |
1969 |
| details |
Ufimian |
Tatarian |
USSR(Russian Platform) |
Molin,V.A. et al. Upper Permian spore-pollen assemblages of the northern Russian Platform |
1972 |
| details |
Ufimian |
|
USSR(Komi ASSR) |
Varyukhina,L.M. On the palynological characteristics of Ufimian deposits of the Pechorsk Synclise. (In: The Phanerozoic of the Northern European Part of the USSR.) |
1980 |
| original |
Ufimian |
|
USSR(Komi ASSR) |
Chalyshev,V.I. et al. The boundary of the Permian and Triassic in the Red-Colored deposits of northern Priural |
1965 |