| details |
Early Triassic |
|
USSR(Nenets Nat.Okrug) |
Entsova,F.I. et al. The boundary between the Permian and Triassic in the North Pre Urals |
1974 |
| 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 |
| details |
Early Tatarian |
|
USSR(Russian Platform) |
Molin,V.A. et al. The palynological basis for zonation and correlation of geological sections |
1986 |
| details |
Late Carboniferous |
Early Permian |
USSR(Russian Platform) |
Dryagina,L.L. Description of organic remains; spores and pollen. (In: The Upper Paleozoic of the Angara Basins;Fauna and Flora. I.T. Zhuravleva and V.I.Ilina, editor) |
1988 |