| original |
Cenomanian |
|
Minnesota |
Pierce,R.L. Lower Upper Cretaceous plant microfossils from Minnesota. |
1961 |
| original |
Nd |
|
Nd |
Brideaux,W.W. Palynology of the Lower Colorado Group (Late Lower Cretaceous) and its lithological equivalents in central and west-central Alberta, Canada. |
1968 |
| details |
Late Cretaceous |
|
Utah |
Kidson,E.J. Palynology and paleoecology of the Buck Tongue of the Mancos Shale, (Upper Cretaceous), from East Central Utah and Western Colorado. |
1971 |
| details |
Late Cretaceous |
|
Colorado |
Kidson,E.J. Palynology and paleoecology of the Buck Tongue of the Mancos Shale, (Upper Cretaceous), from East Central Utah and Western Colorado. |
1971 |
| details |
Aptian |
Turonian |
China(Kiangsi) |
Yu,J. et al. Cretaceous spore pollen in Jiangxi Province. |
1985 |