| details |
Middle Maastrichtian |
Late Maastrichtian |
North Dakota |
Artzner,D.G. Palynology of a Volcanic Ash in the Fox Hills Formation, (Maestrichtian), of Emmons, Morton, and Sioux Counties, North Dakota. |
1974 |
| details |
Late Cretaceous |
Early Paleocene |
Texas |
M©dus,J. Spore and pollen from the Cretaceous/Tertiary boundary from the Brazos River Section, (Texas, USA). |
1992 |
| details |
Cretaceous |
|
USSR |
Boytsova,E.P. et al. Miospores of some ancient plants in the USSR. |
1979 |
| details |
Maastrichtian |
|
Canada(Alberta) |
Srivastava,S.K. Upper Cretaceous palynology-A review |
1967 |
| original |
Maestrichtian |
|
Canada(Alberta) |
Srivastava,S.K. Ephedralean pollen from the Upper Cretaceous Edmonton Formation of Alberta, (Canada), and their paleoecological significance. |
1968 |