| details |
Aptian |
Albian |
USSR(WSL) |
Teslenko,Y.V. et al. Lower Cretaceous flora of the Western Siberian Lowlands. |
1962 |
| details |
Aptian |
Albian |
USSR(WSL) |
Golbert,A.V. et al. Paleolandscapes of West Siberia in Jurassic, Cretaceous, and Paleogene. |
1968 |
| details |
Aptian |
Albian |
USSR(Urals) |
Papulov,G.N. et al. Change in the floras at the Early-Late Cretaceous boundary of the Urals with reference to palynological evidence. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |