| original |
Late Campanian |
|
Montana |
Tschudy,B.D. Palynology of the Upper Campanian, (Cretaceous) Judith River Formation, north-central Montana. |
1973 |
| details |
Early Campanian |
|
New Mexico |
Jameossanaie,A. Palynology and age of South Hospah coal-bearing deposits, McKinley County, New Mexico. |
1987 |
| details |
Late Campanian |
|
Montana |
Jameossanaie,A. Palynology and age of South Hospah coal-bearing deposits, McKinley County, New Mexico. |
1987 |
| details |
Paleocene |
|
Montana |
Lofgren,D.L. et al. Reworking of Cretaceous dinosaurs into Paleocene channel deposits, Upper Hell Creek Formation, Montana. |
1990 |