| original |
Middle Eocene |
|
Colorado |
Wodehouse,R.P. Tertiary pollen II. The oil shales of the Eocene Green River Formation |
1933 |
| original |
Middle Eocene |
|
Utah |
Wodehouse,R.P. Tertiary pollen II. The oil shales of the Eocene Green River Formation |
1933 |
| details |
Eocene |
|
USA |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Eocene |
|
Wyoming |
Penny,J.S. Late Cretaceous and Early Tertiary palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Maastrichtian |
|
Canada(Alberta) |
Srivastava,S.K. Pollen biostratigraphy and paleoecology of the Edmonton Formation, (Maestrichtian), Alberta, Canada. |
1970 |