| details |
Berriasian |
|
USSR(Ukrainian SSR) |
Voronova,G.G. Palynological characteristics of the Jurassic-Cretaceous boundary of some Regions in the Ukraine. |
1979 |
| details |
Late Berriasian |
|
USSR(Ukrainian SSR) |
Kuvayeva,S.B. et al. Palynological characteristic of the Lower Cretaceous deposits of the mountain part of Crimea. |
1973 |
| details |
Berriasian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Palynostratigraphy of the Neocomian of the Ukrain |
1985 |
| details |
Valanginian |
|
USSR(Ukrainian SSR) |
Vakhrameev,V.A. et al. Paleobotanical data and the Border Line between Jurassic and Cretaceous Systems. |
1973 |
| details |
Valanginian |
|
USSR(Ukrainian SSR) |
Vakhrameev,V.A. et al. Paleobotanical data and the Jurassic-Cretaceous boundary. |
1975 |