| details |
Middle Jurassic |
|
USSR(European) |
Chirva,S.A. et al. Correlation of Middle Jurassic - Callovian Sandy Deposits of the Sysola, Yarenga and Pechora River Basins. (In: Jurassic Deposits of the Russian Platform: Collection of Scientific Papers) |
1986 |
| 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 |
| details |
Aptian |
|
USSR(Dagestan ASSR) |
Asatkina,E.F. et al. A list of plant, spore and pollen of the Aptian deposits of some districts of the USSR. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |