| details |
Ufimian |
Late Kazanian |
USSR(Russian Platform) |
Molin,V.A. et al. Upper Permian spore-pollen assemblages of the northern Russian Platform |
1972 |
| details |
Ufimian |
|
USSR(Permsk Oblast) |
Sivertseva,I.A. et al. Spore and pollen complexes of some Permian horizons of Upper Petchora Depression |
1972 |
| details |
Tatarian |
|
USSR(Urals) |
Tuzhikova,V.I. Miospores and stratigraphy of supporting sections of the Uralian Triassic. (Lower Triassic - Upper Permian Boundary) |
1985 |
| details |
Roadian |
Wordian |
Canada(Arctic) |
Utting,J. Palynostratigraphy of Permian and Lower Triassic Rocks, Sverdrup Basin, Canadian Arctic Archipelago |
1994 |