| details |
Hauterivian |
Aptian |
China(Inner Mongolia) |
Miao,S.-J. Early Cretaceous spores and pollen grains and stratigraphical signification from Xingai River of Wuchuan Basin in Ulanqab Meng, Inner Mongolia. |
1982 |
| original |
Albian |
|
Canada(Alberta) |
Brideaux,W.W. Palynology of the Lower Colorado Group (Late Lower Cretaceous) and its lithological equivalents in central and west-central Alberta, Canada. |
1968 |
| original |
Neocomian |
Albian |
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1962 |
| original |
Wealden |
|
Belgium |
Delcourt,A.F. et al. Spores and pollen of the Wealdian of Hainaut. |
1955 |