| details |
Aptian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Stratigraphic subdivision of Lower Cretaceous sediments of the Dnieper-Donets Basin, based on palynology. |
1971 |
| details |
Albian |
|
USSR(Azerbaijan SSR) |
Pokrovskaya,I.M. Lower Cretaceous spore-pollen complexes of the Pre-Caucasus, northern Caucasus and Trans-Caucasia. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |
| details |
Early Aptian |
|
USSR(Caucasus) |
Kuvayeva,S.B. et al. Lower Cretaceous spore-pollen complexes of southeast Caucasus and their stratigraphical importance. (In: Biostratigraphy and Paleogeography of Meso-Cainozoic deposits in oil and gas regions of South East USSR. M.M.Aliev, editor) |
1964 |
| details |
Hauterivian |
|
USSR(Kazakh SSR) |
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 |
Hauterivian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |