| details |
Recent |
|
Nd |
Scott,R.A. Pollen of Ephedra from the Chinle Formation, (Upper Triassic), and the genus Equisetosporites. |
1960 |
| details |
Late Neogene |
|
Wyoming |
Love,J.D. Reconnaissance study of Quaternary Faults in and South of Yellowstone National Park, Wyoming |
1961 |
| 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 |
Late Miocene |
Early Pliocene |
USA(Rocky Mountains) |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Middle Pliocene |
|
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Early Oligocene |
|
Colorado |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Oligocene |
Early Miocene |
New Mexico |
Duchene,H.R. et al. Palynologic evidence for the age of the Abiquiu Formation, North-Central New Mexico. |
1981 |
| details |
Late Pliocene |
Early Pleistocene |
Idaho |
Leopold,E.B. et al. Pollen profiles of the Plio - Pleistocene transition in the Snake River Plain, Idaho. (In: Late Cenozoic history of the Pacific Northwest, interdisciplinary studies on the Clarkia fossil beds of Northern Idaho. C.J.Smiley, editor) |
1985 |
| details |
Barstovian |
|
Wyoming |
Montagne,J. Cenozoic history of the Saratoga Valley area, Wyoming and Colorado. |
1991 |
| details |
Quaternary |
|
Wyoming |
Santucci,V.L. The Yellowstone Paleontological Survey. |
1998 |