| details |
Barremian |
|
USSR(Urals) |
Boytsova,E.P. et al. A list of plant, spore and pollen of the Barremian 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 |
| details |
Hauterivian |
Barremian |
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 |
Valanginian |
|
USSR(WSL) |
Pokrovskaya,I.M. Lower Cretaceous spore-pollen complexes of the Western Siberian Lowland. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |