| original |
Late Cenomanian |
|
Arizona |
Li,H. et al. Dinoflagellate stratigraphy and its response to sea level change in Cenomanian-Turonian sections of the Western Interior of the United States. |
1996 |
| original |
Campanian |
Maastrichtian |
Senegal |
Jain,K.P. et al. Cretaceous microplankton from Senegal Basin, West Africa. Part 2. Systematics and biostratigraphy. |
1975 |
| 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 |