| details |
Valanginian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Palynological characterization of Upper Jurassic Lower Cretaceous boundary formations of the Dnieper-Donets Depression. |
1971 |
| details |
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 |
Valanginian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. et al. Comparison of spore-pollen assemblages of the Jurassic-Cretaceous boundary of Dnepr-Donets Depression and Prutdnestr interfluve. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| details |
Valanginian |
Albian |
USSR(WSL) |
Markova,L.G. The history of development of the Early Cretaceous flora from the Western Siberian Lowlands (Based on palynological facts). |
1971 |
| details |
Volgian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Palynological characteristic of the contiguous Upper Jurassic-Lower Cretaceous formations of the Dnepr-Donets Trough. |
1971 |