| details |
Middle Eocene |
|
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Eocene |
|
New Mexico |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Oligocene |
|
Alaska |
Wahrhaftig,C. et al. The coal-bearing group in the Nenana Coalfield, Alaska. |
1969 |
| 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 |
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 Miocene |
Pleistocene |
Canada(Yukon) |
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 |
Early Oligocene |
|
USSR(Armenian SSR) |
Zaporozhets,N.I. Palynocomplexes and phytoplankton complexes from the Late Eocene and Oligocene deposits from Zkvazhin #1 (Near Laknzhar, Armenia). (In: Paleoflora and Stratigraphy of the Phanerozoic. M.A.Akhmetev, editor) |
1989 |