| details |
Late Berriasian |
Valanginian |
USSR(Ukrainian SSR) |
Voronova,M.A. et al. Palynologic characteristics of the Jurassic-Cretaceous transition in the Crimea. |
1977 |
| details |
Valanginian |
|
USSR(Kazakh SSR) |
Smirnova,S.B. et al. Palynological features of the Valanginian in Western Karatau, (Mangyshlak). |
1978 |
| details |
Berriasian |
|
USSR(Ukrainian SSR) |
Voronova,G.G. Palynological characteristics of the Jurassic-Cretaceous boundary of some Regions in the Ukraine. |
1979 |
| details |
Berriasian |
|
USSR(Kazakh SSR) |
Smirnova,S.B. et al. Differentiation of Jurassic and Lower Cretaceous sediments of the northern Buzachinskoe Uplift on the basis of palynological data |
1982 |
| original |
Hauterivian |
Barremian |
USSR |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |
| original |
Nd |
|
Nd |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |
| details |
Early Callovian |
Middle Callovian |
USSR(Kazakh SSR) |
Radyushkina,T.T. et al. Callovian deposits in East Usturt and West Aral |
1986 |