| details |
Middle Miocene |
Late Miocene |
Oregon |
Gray,J. Miocene pollen floras from Oregon. |
1956 |
| details |
Miocene |
|
Oregon |
Chaney,R.W. Miocene floras of the Columbia Plateau.Part I. composition and interpretation. |
1959 |
| details |
Middle Eocene |
|
Canada(British Columbia) |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Middle Miocene |
Late Miocene |
Washington |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Early Miocene |
|
Oregon |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Middle Oligocene |
Early Pliocene |
Idaho |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Late Paleocene |
Early Eocene |
Wyoming |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Paleocene |
|
North Dakota |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Maastrichtian |
Early Paleocene |
California |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Late Paleocene |
|
South Dakota |
Gray,J. et al. Fossil Pachysandra from Western America with a comparative study of pollen in Pachysandra and Sarcococca |
1964 |
| details |
Middle Oligocene |
Late Oligocene |
USA(Pacific Northwest) |
Gray,J. Northwest American Tertiary palynology. (In: Ancient Pacific Floras. The Pollen Story. L.M. Cranwell, editor) |
1964 |
| details |
Miocene |
|
USA(Pacific Northwest) |
Gray,J. Northwest American Tertiary palynology. (In: Ancient Pacific Floras. The Pollen Story. L.M. Cranwell, editor) |
1964 |
| details |
Nd |
|
Nd |
Stanley,E.A. Upper Cretaceous and Paleocene plant microfossils and Paleocene dinoflagellates and hystrichosphaerids from northwestern South Dakota. |
1965 |
| details |
Late Miocene |
Early Pliocene |
Canada(British Columbia) |
Martin,H.A. et al. Palynology of Late Tertiary sediments from Queen Charlotte Islands British Columbia |
1966 |
| details |
Maastrichtian |
|
Alaska |
Srivastava,S.K. Upper Cretaceous palynology-A review |
1967 |
| details |
Late Oligocene |
|
Alaska |
Wahrhaftig,C. et al. The coal-bearing group in the Nenana Coalfield, Alaska. |
1969 |
| details |
Late Tertiary |
|
North America |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |