| original |
Late Oligocene |
|
Vermont |
Traverse,A. Pollen analysis of the Brandon Lignite of Vermont. |
1955 |
| 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 |
Middle Eocene |
|
Canada(British Columbia) |
Rouse,G.E. et al. Palynology and geochronology of Eocene beds from Cheslatta Falls and Nazko areas, central British Columbia. |
1988 |
| details |
Early Miocene |
|
Vermont |
Traverse,A. Palynofloral geochronology of the Brandon Lignite of Vermont, USA. |
1994 |