| original |
Campanian |
|
Canada(NWT,Mackenzie) |
McIntyre,D.J. Palynology of an Upper Cretaceous section, Horton River, District of MacKenzie, N. W. T. |
1974 |
| original |
Maastrichtian |
|
Texas |
Zaitzeff,J.B. et al. The use of dinoflagellates and acritarchs for zonation and correlation of the Navarro Group (Maestrichtian), of Texas. (In: Symposium on Palynology of the Late Cretaceous and Early Tertiary. R.M Kosanke and A.T. Cross, editors) |
1970 |
| original |
Late Cretaceous |
|
Colorado |
Thompson,G.G. Paleoecology of palynomorphs in the Mancos Shale, Southwestern Colorado. |
1969 |
| original |
Maastrichtian |
|
Texas |
Zaitzeff,J.B. Taxonomic and stratigraphic significance of dinoflagellates and acritarchs of the Navarro Group, (Maestrichtian), from eastcentral and southwest Texas. |
1967 |