| details |
Tatarian |
|
USSR(Arkhangelsk Oblast) |
Plotnikov,M.A. Tatarian Stage |
1969 |
| details |
Kazanian |
|
USSR(Arkhangelsk Oblast) |
Plotnikov,M.A. Tatarian Stage |
1969 |
| details |
Early Triassic |
|
USSR(Arkhangelsk Oblast) |
Molin,V.A. Vetluzhsk series |
1969 |
| details |
Kungurian |
|
USSR(Aktyubinskaya) |
Andreeva,E.M. et al. Palaeopalynology. (Three Volumes: Volume I: Methods. Volume II: Complexes of palynomorphs of the Precambrian-Holocene of the USSR. Volume III: Figures and Plates. Editor-I.M. Pokrovskaya) |
1966 |
| details |
Late Permian |
|
Arctic Ocean |
Dibner,A.F. et al. Carboniferous, Permian and Triassic spore-pollen assemblages of the Barents Sea Shelf and their geological significance. (In: Geology and mineral genesis in Arctic Region USSR. Symposium of Scientific Studies.) |
1981 |