| original |
Valanginian |
Barremian |
USSR(WSL) |
Malyavkina,V.S. et al. Pinaceae. (In: Pyltsa i spory zapadnoi Sibiri, yura-paleotsen. S.R.Samoilovich and N.D.Mtchedlishvili, editors) |
1961 |
| details |
Late Barremian |
Early Aptian |
USSR(Nenets Nat.Okrug) |
Gryazeva,A.S. Palynological basis for the stratigraphy of Lower Cretaceous deposits of the Pechorsk Basin. (In: Mikrofitofossilii v neftyanoi geologii. N. A. Timoshina, editor) |
1980 |
| details |
Volgian |
|
USSR(Taymyr Nat.Okrug) |
Grigoreva,K.N. Palynological characteristics of Upper Jurassic deposits of the Kheta River (Yenisey-Khatansk Trough). (In: Stratigraphy and Paleontology of Siberia) |
1981 |
| details |
Early Jurassic |
Middle Jurassic |
Russia(Siberia) |
Rovnina,L.V. et al. Floristic evolution and paleogeographic situation in the Early Middle Jurassic of West Siberia |
1997 |