| details |
Cenomanian |
Early Senonian |
New York |
Baskerville,C.A. A micropaleontological study of Cretaceous sediments on Staten Island, New York. |
1965 |
| details |
Early Cretaceous |
Late Cretaceous |
Montana |
Melchior,R.C. Pollen and spores of the Shawmut Anticline, Montana. |
1965 |
| 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 |