| details |
Late Miocene |
|
Nebraska |
MacGinitie,H.D. The Kilgore flora. A Late Miocene flora from northern Nebraska. |
1962 |
| details |
Pliocene |
|
USA(Pacific Northwest) |
Gray,J. Northwest American Tertiary palynology. (In: Ancient Pacific Floras. The Pollen Story. L.M. Cranwell, editor) |
1964 |
| details |
Late Oligocene |
|
Colorado |
Penny,J.S. Late Cretaceous and Early Tertiary palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Miocene |
|
Washington |
Barnett,J. et al. Palynology and paleoecology of a sedimentary interbed in the Yakima Basalt, (Miocene), Palouse Falls, Washington. |
1980 |
| 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 |
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 |
Early Miocene |
Middle Miocene |
California |
Barnett,J. Palynology and paleoecology of the Tertiary Weaverville Formation, Northwestern California, USA. |
1989 |
| details |
Late Pliocene |
Early Pleistocene |
Idaho |
Thompson,R.S. Pliocene and Early Pleistocene environments and climates of the Western Snake River Plain, Idaho |
1996 |
| details |
Pliocene |
Quaternary |
Utah |
Davis,O.K. Palynological evidence for vegetation cycles in a 1.5 million year pollen record from the Great Salt Lake, Utah, USA. |
1998 |