| original |
Albian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Morphology of spores of the Schizaeaceae Family and the history of the family in the geological past. |
1959 |
| original |
Late Albian |
|
USSR |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| details |
Bajocian |
Bathonian |
Nd |
Issagulova,E.Z. Pollen and spores in Jurassic deposits of the southwestern margin of the Russian Platform and the Subcarpathian Foredeep. (In: The Importance of Palynological Analysis for the Stratigraphic and Paleofloristic Investigations. M.I. Nejshtadt, editor. Papers for the Second International Palynology Conference., Utrecht,1966) |
1966 |
| details |
Hauterivian |
Barremian |
USSR(Ukrainian SSR) |
Voronova,M.A. Stratigraphic subdivision of Lower Cretaceous sediments of the Dnieper-Donets Basin, based on palynology. |
1971 |