| details |
Early Eocene |
|
Wyoming |
Durkin,T.V. et al. Paleoecology of Early Eocene strata near Buffalo, Wyoming |
1986 |
| details |
Eocene |
|
Wyoming |
Sarnecki,J.C. Palynology and paleoecology of coal sections of the Upper Fort Union and Lower Wasatch Formations, Spotted Horse Coal Field, Campbell County, Wyoming. |
1981 |
| details |
Middle Eocene |
|
Wyoming |
Bradley,W.H. Geology of the Green River Formation and associate Eocene rocks in Southwestern Wyoming and adjacent parts of Colorado and Utah. |
1964 |
| details |
Early Eocene |
Middle Eocene |
Wyoming |
Fisk,L.H. et al. Plant microfossils from the Yellowstone Fossil Forests: Preliminary report. |
1974 |
| details |
Paleocene |
Eocene |
Wyoming |
Tschudy,R.H. Pollen changes near the Fort Union-Wasatch boundary, Powder River Basin. |
1976 |
| details |
Early Washitan |
|
Wyoming |
Prothero,D.R. Geochronology and magnetostratigraphy of Paleogene North American mammal "ages": An update. (In: Geochronology, Timescales and Global Stratigraphic Correlation. W.A.Berggren et al, editors) |
1995 |