| original |
Turonian |
|
USA(Atlantic Coast.Pl.) |
Groot,J.J. et al. Plant microfossils and age of the Raritan, Tuscaloosa and Magothy Formations of the eastern United States. |
1961 |
| original |
Late Cretaceous |
|
Colorado |
Gies,T.F. Palynology of sediments boardering some Upper Cretaceous strand lines in Northwestern Colorado. |
1972 |
| original |
Campanian |
Montian |
Utah |
May,F.E. A survey of palynomorphs from several coal-bearing horizons of Utah. |
1972 |
| original |
Maastrichtian |
Danian |
Utah |
May,F.E. A survey of palynomorphs from several coal-bearing horizons of Utah. |
1972 |
| original |
Maastrichtian |
|
Canada(NWT,Mackenzie) |
McIntyre,D.J. Palynology of an Upper Cretaceous section, Horton River, District of MacKenzie, N. W. T. |
1974 |
| original |
Maastrichtian |
Early Paleocene |
Wyoming |
Nichols,D.J. et al. A new Cretaceous-Tertiary boundary locality in the Western Powder River Basin, Wyoming; Biological and geological implications. |
1992 |