original |
Middle Jurassic |
|
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
original |
Middle Jurassic |
|
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
original |
Jurassic |
Early Neocomian |
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
original |
Middle Jurassic |
|
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
details |
Late Jurassic |
|
USSR(Urals) |
Papulov,G.N. et al. Paleofloral Provinces of the eastern Slope of the Urals during Upper Jurassic. (In: Biostratigraphic and Paleobiofacies Studies their Practical Significance. I.E.Zanina, editor) |
1970 |