| details |
Middle Hauterivian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |
| details |
Late Jurassic |
Early Cretaceous |
USSR(Siberia) |
Bolkhovitina,N.A. Atlas of spores and pollen from Jurassic and Lower Cretaceous deposits of the Vilyuysk Basin. |
1956 |
| details |
Valanginian |
|
USSR(Ukrainian SSR) |
Voronova,M.A. Stratigraphic subdivision of Lower Cretaceous sediments of the Dnieper-Donets Basin, based on palynology. |
1971 |
| details |
Early Jurassic |
Middle Jurassic |
China(Sinkiang Uighur) |
Liu,Z.-S. et al. Early and Middle Jurassic sporopollen assemblages from Wenquan Coalfield of Xinjiang, China and their stratigraphical significance |
1992 |
| details |
Nd |
|
Nd |
Lu,Z. Jurassic sporopollen assemblages from the Beishan Coal-Field, Qitai Xinjiang |
1993 |