| details |
Campanian |
Maastrichtian |
Kansas |
Lammons,J.M. The palynology and paleoecology of the Pierre Shale, (Campanian - Maestrichtian), of northwestern Kansas and Environs. |
1969 |
| original |
Santonian |
|
Canada(Alberta) |
Rouse,G.E. The Disclosure and paleobotanical evaluation of plant microfossils from selected Cretaceous Coal-bearing strata of Canada |
1956 |
| original |
Santonian |
|
Canada(Alberta) |
Rouse,G.E. The application of a new nomenclatural approach to Upper Cretaceous plant microfossils from Western Canada. |
1957 |
| details |
Late Cretaceous |
|
Montana |
Melchior,R.C. Pollen and spores of the Shawmut Anticline, Montana. |
1965 |