| details |
Early Tatarian |
|
USSR(Arkhangelsk Oblast) |
Bazhenova,S.N. et al. Stratigraphy of the Tatarian Stage of the Volshoi Severnoi Duina and Usta River Interfluve |
1977 |
| details |
Late Artinskian |
Early Kungurian |
USSR(Kazakh SSR) |
Dalyan,I.B. et al. Palynological separation of the stratigraphy of Lower Permian deposits of the eastern Border zone of the Precaspian Depression |
1977 |
| details |
Middle Triassic |
Early Liassic |
USSR(WSL) |
Markova,L.G. et al. The age of the sediments of the southeast part of the Western Siberian Lowlands, based on palynology. |
1980 |
| details |
Ufimian |
|
USSR(Kazakh SSR) |
Kukhtinov,D.A. et al. The Ufimian Stage of the South-East Russian Platform. (In: The Phanerozoic of the Northern European Part of the USSR.) |
1980 |
| details |
Early Triassic |
|
USSR(Yakut ASSR) |
Skripina,G.F. Evolution of vegetation of Yakutia in the Triassic; Palynologic data. (In: Life on Ancient Continents: Its Establishment and Expansion.) |
1981 |
| details |
Induan |
|
USSR(Mangyshlak ASSR) |
Alekseeva,L.V. et al. Stratigraphic subdivision of Triassic in South Mengyshlak |
1991 |