| details |
Valanginian |
|
USSR(WSL) |
Rovnina,L.V. Basic principles of detailed stratigraphy of Neocomian oil-gas deposits from Western Siberia. (In: Methods of Interpretation of Palynological Data. E.P.Boitsova, editor) |
1977 |
| details |
Valanginian |
|
USSR(WSL) |
Golbert,A.V. et al. Paleolandscapes of West Siberia in Jurassic, Cretaceous, and Paleogene. |
1968 |
| details |
Volgian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Palynological characteristic of the contiguous Upper Jurassic-Lower Cretaceous formations of the Dnepr-Donets Trough. |
1971 |