| details |
Ufimian |
|
USSR(Kazakh SSR) |
Kukhtinov,D.A. et al. The Ufimian Stage of the South-East Russian Platform. (In: The Phanerozoic of the Northern European Part of the USSR.) |
1980 |
| details |
Late Permian |
|
USSR(Komi ASSR) |
Varyukhina,L.M. Particular spore-pollen complexes of the Late Permian Tymano-Pechorsk Province and their Connection with Paleolandscapes. (In: Life on Ancient Continents: Its Establishment and Expansion.) |
1981 |
| details |
Ufimian |
|
USSR(European) |
Molin,V.A. et al. The Permian system-An independent stratigraphic subdivision of the Upper Permian |
1984 |