| original |
Aptian |
|
USSR |
Bolkhovitina,N.A. The spores of the Family Gleicheniaceae ferns and their importance for the stratigraphy |
1968 |
| original |
Albian |
Cenomanian |
USSR(Urals) |
Bolkhovitina,N.A. The spores of the Family Gleicheniaceae ferns and their importance for the stratigraphy |
1968 |
| details |
Late Aptian |
|
Austria |
Corna,O. Palynological study and nannofossils. (In: Study of the Lower Cretaceous of the Vienna Woods. Grun et al) |
1972 |
| details |
Cretaceous |
|
Nd |
Herngreen,G.F.W. et al. Cretaceous palynofloral Provinces: A review. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |