| details |
Campanian |
Maastrichtian |
Colorado |
Johnson,R.C. et al. Petrography, X-Ray mineralogy, and palynology of a measured section of the Upper Cretaceous Mesaverde Group in Hunter Canyon, Western Colorado. |
1980 |
| details |
Late Maastrichtian |
Early Paleocene |
Canada(Saskatchewan) |
Sweet,A.R. Palynology of the Ravenscrag and Frenchman Formation. (In: Coal Resources of Southern Saskatchewan: A model for evaluation methodology. S.H.Whitaker, J.A.Irvine and P.L.Broughton, editors) |
1978 |
| details |
Santonian |
Maastrichtian |
California |
Frederiksen,N.O. Tectonic and paleogeographic setting of a new latest Cretaceous floristic province in North America. |
1987 |
| details |
Late Campanian |
Early Maastrichtian |
Colorado |
Johnson,R.C. et al. A study of the Cretaceous-Tertiary unconformity in the Piceance Creek Basin, Colorado--the underlying Ohio Creek Formation (Upper Cretaceous) Aredefined as a Member of the Hunter Canyon or Mesaverde Formation |
1980 |
| details |
Aptian |
Turonian |
China |
Yang,Z. The Cretaceous System. (In: The Geology of China. Z. Yang, Y. Cheng and H. Wang, editors) |
1986 |
| details |
Maastrichtian |
|
Wyoming |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |