| details |
Middle Liassic |
Valanginian |
USSR(Far East) |
Korotkevich,V.D. Palynologic characteristics of the marine Jurassic and Lower Cretaceous sediments discovered in wells of Tyumatine and Ulakhan-Yruakhsk Uchastkakh (Lena-Olenek Region). |
1963 |
| details |
Berriasian |
Valanginian |
USSR(WSL) |
Purtova,S.I. On the Neocomian flora evolution in West Siberian Lowland with reference to palynological data. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| details |
Callovian |
Volgian |
USSR(WSL) |
Rovnina,L.V. Spore-pollen assemblages of Upper Jurassic oil and gas bearing deposits of the western half of the West Siberian Lowland. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) |
1971 |