| details |
Early Campanian |
Middle Campanian |
Canada(Alberta) |
Jarzen,D.M. et al. Evolutionary significance and botanical relationships of Cretaceous angiosperm pollen in the Western Canadian Interor. |
1975 |
| details |
Early Campanian |
Middle Campanian |
Canada(Alberta) |
Norris,G. et al. Evolution of the Cretaceous terrestrial palynoflora in Western Canada. |
1975 |
| details |
Maastrichtian |
|
Canada(Alberta) |
Stanley,E.A. The stratigraphical, biogeographical, paleoautecological and evolutionary significance of the fossil pollen Group Triprojectacites. |
1970 |