| original |
Early Cretaceous |
|
USSR(Siberia) |
Bolkhovitina,N.A. Atlas of spores and pollen from Jurassic and Lower Cretaceous deposits of the Vilyuysk Basin. |
1956 |
| details |
Late Jurassic |
|
USSR(Kazakh SSR) |
Murakhovskaya,E.I. et al. Upper Cretaceous deposits in Semipalatinskaya Pre-Irtyshskoye and the Pecularities of their pollen and spore contents. |
1976 |
| details |
Early Cretaceous |
|
USSR(Siberia) |
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 |
| details |
Early Cretaceous |
|
USSR(Yakut ASSR) |
Bolkhovitina,N.A. Spore-pollen complexes from the Mesozoic deposits of the Vilyuy Basin and their importance for stratigraphy. |
1959 |