| original |
Early Cretaceous |
|
USSR(Caucasus) |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| details |
Early Jurassic |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Early Cretaceous |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Valanginian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Stratigraphic subdivision of Lower Cretaceous sediments of the Dnieper-Donets Basin, based on palynology. |
1971 |
| details |
Tithonian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. et al. Stratigraphic boundaries in the Mesozoic and Paleogene of the Ukraine, based on palynology. |
1980 |
| details |
Berriasian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. et al. New data about the Sea Berraisian deposits in the northern part of Dneiper-Donets Depression |
1981 |
| details |
Late Berriasian |
|
USSR(Irkutskaya Oblast) |
Fedorova,V.A. et al. Palynostratigraphy of the boundary deposits of the Jurassic and Cretaceous at Oka River. (In: Pogranichnye Varusy Yurskoi i Melovoi Sistem) |
1984 |
| details |
Early Cretaceous |
|
USSR(Caucasus) |
Davies,E.H. The Anemiacean, Schizaeacean and related spores. An index to genera and species. |
1985 |