| details |
Valanginian |
Cenomanian |
USSR(Siberia) |
Chlonova,A.F. et al. Changes in composition of palynological assemblages from Cretaceous deposits of the eastern part of the West Siberian Plain. |
1994 |
| details |
Valanginian |
|
USSR(Sverdlovskaya) |
Kara-Murza,E.N. Spores and pollen of Mesozoic deposits of the northern Eniseydk Lensk Region. |
1954 |
| details |
Nd |
|
Nd |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |