| details |
Valanginian |
Albian |
USSR(WSL) |
Markova,L.G. The history of development of the Early Cretaceous flora from the Western Siberian Lowlands (Based on palynological facts). |
1971 |
| details |
Late Jurassic |
|
USSR(Kazakh SSR) |
Posadskaya,A.S. et al. Stratigraphy and oil-bearing Capacity of Jurassic deposits of the eastern Margin of the Pricaspian Depression |
1965 |
| details |
Ladinian |
Carnian |
USSR(Urals) |
Tuzhikova,V.I. Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) |
1973 |