| details |
Early Pliocene |
Middle Pliocene |
Japan(Shikoku I.) |
Nakamura,J. Fossil pollen in the Nahari Lignite. |
1951 |
| details |
Eocene |
Miocene |
Texas |
Wilson,L.R. et al. Fossil spores and pollen of the Bender No.1 and B.D.Griffin No.5 wells, Montgomery County, Texas. |
1949 |
| details |
Paleocene |
|
Montana |
Wilson,L.R. et al. Plant microfossils from a Fort Union Coal of Montana. |
1946 |
| details |
Miocene |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Microbotany of Miocene Brown Coal from the Niederrheinische Bucht |
1934 |
| original |
Middle Eocene |
|
Colorado |
Wodehouse,R.P. Tertiary pollen II. The oil shales of the Eocene Green River Formation |
1933 |
| details |
Middle Eocene |
|
Utah |
Wodehouse,R.P. Tertiary pollen II. The oil shales of the Eocene Green River Formation |
1933 |