| details |
Early Paleocene |
|
USSR(Ukrainian SSR) |
Ryabchun,V.K. et al. On the question of Lower Paleocene of the Central and Northwest Part of the Ukrainian Shield (Middle Dnieper area) |
1972 |
| details |
Berriasian |
Early Valanginian |
USSR(Siberia) |
Markova,L.G. Palynological characteristics of Neocomian deposits of the northwest part of West Siberia. (In: Paleopalynology Material of Central Siberia. L.E.Markova, editor) |
1971 |
| details |
Aptian |
Early Albian |
USSR(Trans-Urals) |
Boytsova,E.P. Lower Cretaceous spore-pollen complexes of the Central Asia Trans-Urals. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |