| original |
Early Albian |
Middle Albian |
USSR |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |
| details |
Late Jurassic |
Early Cretaceous |
USSR(Ukrainian SSR) |
Lomayeva,E.T. Spores and pollen of Pre Upper Cretaceous sediments occurring in the Zhitomir area |
1961 |
| details |
Barremian |
|
USSR(Dagestan ASSR) |
Grossgeim,D.A. et al. 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 |
Early Barremian |
|
USSR(Dagestan ASSR) |
Pokrovskaya,I.M. Lower Cretaceous spore-pollen complexes of the Pre-Caucasus, northern Caucasus and Trans-Caucasia. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |
| details |
Albian |
Cenomanian |
USSR(Kazakh SSR) |
Boytsova,E.P. Lower Cretaceous spore-pollen complexes of Western Kazakhstan. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |
| 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 |
| details |
Early Albian |
Middle Albian |
USSR |
Fensome,R.A. Taxonomy and biostratigraphy of Schizaealean spores from the Jurassic-Cretaceous boundary beds of the Aklavik Range, District of MacKenzie |
1987 |