| 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 Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Pollen analyses of some coal seams in the Akabira area, Ishikari Coal Field, Hokkaido |
1956 |