| details |
Ufimian |
Tatarian |
USSR(Russian Platform) |
Varyukhina,L.M. Spores and pollen of the red-colored coal-bearing Permian and Triassic sediments of the northeastern part of European SSSR. |
1971 |
| details |
Late Olenikian |
|
USSR(Russian Platform) |
Varyukhina,L.M. Spores and pollen of the red-colored coal-bearing Permian and Triassic sediments of the northeastern part of European SSSR. |
1971 |
| details |
Ufimian |
|
Russian Platform |
Koloda,N.A. et al. Analogue of the Ufimian, Kazanian and Tatarian Stages of Russia in North - Western China based on miospores and bivalves. |
1996 |