| original |
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 |
| original |
Valanginian |
Early Hauterivian |
USSR(Amurskaya Oblast) |
Bityutskaya,P.I. et al. The significance of the palynological method for the subdivision of the Cretaceous deposits of the North-Western part of the Pacific biogeographic area. (In: Palynology, Method and Stratigraphy) |
1973 |
| original |
Early Pliocene |
|
Canada(Arctic) |
Aksu,A.E. et al. Upper Cenozoic history of the Labrador Sea, Baffin Bay and Arctic Ocean; a paleoclimatic and paleoceanographic summary. |
1988 |
| original |
Early Pliocene |
Middle Pliocene |
Canada(Arctic) |
Aksu,A.E. et al. Magnetostratigraphy and palynology Demonstrate at Least 4 Million years of Arctic sedimentation |
1985 |
| original |
Aptian |
Albian |
USSR(Urals) |
Agranovskaya,I.A. et al. A list of plant, spore and pollen of the Aptian-Albian 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 |