| details |
Paleocene |
|
Wyoming |
Nichols,D.J. North American and European species of Momipites ("Engelhardtia"), and related Genera. |
1973 |
| details |
Early Paleocene |
|
Canada(Saskatchewan) |
Sweet,A.R. Palynology of the Ravenscrag and Frenchman Formation. (In: Coal Resources of Southern Saskatchewan: A model for evaluation methodology. S.H.Whitaker, J.A.Irvine and P.L.Broughton, editors) |
1978 |
| details |
Oligocene |
|
Canada(Arctic) |
McNeil,D.H. et al. Geology and biostratigraphy of the Dome Gulf et al.Ukalerk C-50 Well, Beaufort Sea |
1982 |
| details |
Quaternary |
|
Colorado |
Scott,L. et al. Reworked Cretaceous palynomorphs in Late Quaternary deposits from Central Colorado USA. |
1984 |
| details |
Paleocene |
|
Wyoming |
Nichols,D.J. et al. Latest Cretaceous and Early Tertiary history of vegetation in the Powder River Basin, Montana and Wyoming. |
1989 |
| details |
Middle Paleocene |
Late Paleocene |
North Dakota |
Nichols,D.J. Biostratigraphy, Williston Basin. In: Resource assement of selected Tertiary coal beds and zone in the northern Rocky Mountains and Great Plains regions. |
1999 |