| details |
Valanginian |
Early Hauterivian |
USSR(Amurskaya Oblast) |
Bityutskaya,P.I. et al. The significance of the palynological method for the subdivision of the Cretaceous deposits of the North-Western part of the Pacific biogeographic area. (In: Palynology, Method and Stratigraphy) |
1973 |
| 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 |
Volgian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Palynological characteristic of the contiguous Upper Jurassic-Lower Cretaceous formations of the Dnepr-Donets Trough. |
1971 |