| details |
Middle Maastrichtian |
Late Maastrichtian |
North Dakota |
Artzner,D.G. Palynology of a Volcanic Ash in the Fox Hills Formation, (Maestrichtian), of Emmons, Morton, and Sioux Counties, North Dakota. |
1974 |
| details |
Campanian |
|
Canada(Alberta) |
Jarzen,D.M. Palynology of Dinosaur Provincial Park, (Campanian), Alberta. |
1982 |
| original |
Maastrichtian |
|
Canada(Alberta) |
Srivastava,S.K. Monolete spores from the Edmonton Formation (Maastrichtian), Alberta, (Canada). |
1971 |
| details |
Cretaceous |
|
New Mexico |
Tschudy,R.H. The Gasbuggy Core. A palynological appraisal. |
1973 |