| details |
Pliocene |
|
W.Germany(Hesse) |
Frantz,U. Investigation of the spore and pollen flora of the Pliocene of Willershausen |
1961 |
| details |
Eocene |
|
Wyoming |
Fisk,L.H. et al. Additional Conifers from the Eocene Amethyst Mountain "Fossil Forest", Yellowstone National Park, Wyoming. |
1978 |
| details |
Late Miocene |
|
Wyoming |
Barnosky,C.W. Late Miocene vegetational and climatic variations Inferred from a pollen record in Northwest Wyoming |
1984 |
| details |
Barstovian |
|
Wyoming |
Montagne,J. Cenozoic history of the Saratoga Valley area, Wyoming and Colorado. |
1991 |
| details |
Middle Pliocene |
|
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Early Miocene |
Middle Miocene |
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |