| details |
Eocene |
|
Washington |
Hopkins,W.S. Palynology of Tertiary rocks of the Whatcom Basin, southwest British Columbia, and northwest Washington. |
1966 |
| details |
Miocene |
|
Washington |
Hopkins,W.S. Palynology of Tertiary rocks of the Whatcom Basin, southwest British Columbia, and northwest Washington. |
1966 |
| details |
Late Miocene |
|
Washington |
Ballog,R.A. et al. Palynology of the Montesano Formation (Upper Miocene) of Western Washington. |
1972 |
| details |
Paleocene |
|
Wyoming |
Nichols,D.J. The role of palynology in paleoecological analyses of Tertiary coals. |
1995 |
| details |
Eocene |
|
Wyoming |
Santucci,V.L. The Yellowstone Paleontological Survey. |
1998 |