| original |
Middle Campanian |
Late Campanian |
Canada(Yukon) |
Nichols,D.J. et al. Biostratigraphy of Upper Cretaceous non-marine palynofloras in a north-south transect of the Western Interior Basin. (In: Evolution of the Western Interior Basin) |
1993 |
| original |
Claiborne |
|
USA(Gulf Coast) |
Frederiksen,N.O. Sporomorph biostratigraphy, floral changes, and paleoclimatology, Eocene and Earliest Oligocene of the eastern Gulf Coast. |
1988 |
| original |
Santonian |
|
Canada(Arctic) |
Doerenkamp,A. et al. Cretaceous and Tertiary palynomorph assemblages from Banks Island and adjacent areas (NWT). |
1976 |