| original |
Early Cretaceous |
|
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
| details |
Aptian |
|
USSR(Urals) |
Malyavkina,V.S. Spore and pollen complexes of Mesozoic deposits of the South-East of the Russian Platform (Emba and West Urals) |
1956 |
| details |
Rhaetian |
|
USSR(Urals) |
Kareva,E.A. The Upper Paleozoic and Lower Mesozoic of the Eastern Slope of the Urals and the western part of the Western Siberian Lowlands. (In: Geology and Petroleum Resources of the western parts of the Western Siberian Lowlands. S.G.Galerkina, editor) |
1959 |