| original |
Late Cretaceous |
|
Alaska |
Tschudy,B.D. Species of Aquilapollenites and Fibulapollis from two Upper Cretaceous localities in Alaska. |
1969 |
| details |
Campanian |
|
Canada(NWT,Mackenzie) |
Brideaux,W.W. Palynologic evidence for a very Late Cretaceous age of Little bear and East Fork Formation, District of MacKenzie |
1971 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Campanian |
Early Maastrichtian |
Canada(NWT,Mackenzie) |
Yorath,C.J. et al. Cretaceous and Tertiary stratigraphy and paleogeography northern Interior Plains, District of MacKenzie. |
1981 |
| details |
Nd |
|
Nd |
Farabee,M.J. Morphology of Triprojectate fossil pollen: form and distribution in space and time. |
1993 |