| original |
Induan |
Early 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 |
Anisian |
Ladinian |
Barents Sea |
Mиrk,A. et al. Triassic rocks in Svalblard, the Arctic Soviet Islands and the Barents Shelf: Bearing on their correlations. (In: Arctic Geology and Petroleum Potential. T.O.Vorren et al, editors) |
1993 |
| details |
Olenikian |
|
USSR(Komi ASSR) |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |