| details |
Middle Eocene |
|
Wyoming |
Wodehouse,R.P. Tertiary pollen.1.Pollen of the living representatives of the Green River flora. |
1932 |
| details |
Middle Eocene |
|
Utah |
Wodehouse,R.P. Tertiary pollen.1.Pollen of the living representatives of the Green River flora. |
1932 |
| details |
Middle Eocene |
|
Colorado |
Wodehouse,R.P. Tertiary pollen.1.Pollen of the living representatives of the Green River flora. |
1932 |
| details |
Early Miocene |
|
Mexico(Chiapas) |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Early Miocene |
|
Costa Rica |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Early Miocene |
|
Panama |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |