| details |
Late Oligocene |
Middle Miocene |
Canada(British Columbia) |
White,J.M. Palynostratigraphy of Tow Hill No.1 Well in the Skonun Formation, Queen Charlotte Basin, British Columbia. (In: Evolution and Hydrocarbon Potential of the Queen Charlotte Basin, British Columbia. G.J.Woodsworth, editor) |
1991 |
| details |
Late Oligocene |
|
Alaska |
Wahrhaftig,C. et al. The coal-bearing group in the Nenana Coalfield, Alaska. |
1969 |
| details |
Late Oligocene |
|
Alaska |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Middle Miocene |
Pleistocene |
Alaska |
White,J.M. et al. An 18 million year record of vegetation and climate change in northwestern Canada and Alaska: Tectonic and global climatic correlates. |
1997 |
| details |
Middle Eocene |
|
Alabama |
Crepet,W.L. Some aspects of the pollination biology of Middle Eocene angiosperms. |
1979 |
| details |
Middle Eocene |
Early Oligocene |
Alabama |
Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. |
1980 |
| details |
Claiborne |
|
Alabama |
Gray,J. Temperate pollen genera in the Eocene, (Claiborne), flora, Alabama. |
1960 |