| 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 |
| 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 |
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 |
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 Miocene |
|
Costa Rica |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Late Oligocene |
Middle Miocene |
Delaware |
Groot,J.J. Plant microfossils of the Calvert Formation of Delaware. |
1992 |
| details |
Miocene |
|
Maryland |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Early Miocene |
|
Mexico(Chiapas) |
Graham,A. Studies in Neotropical paleobotany. XIII: An Oligo-Miocene palynoflora from Simojovel, (Chiapas, Mexico). |
1999 |
| details |
Early Miocene |
|
Mexico(Chiapas) |
Graham,A. Lower Miocene floras and biogeography of Central America |
1989 |
| details |
Pliocene |
|
Mexico(Veracruz) |
Graham,A. Terrestrial Pliocene climates in northern Latin America |
1999 |
| details |
Middle Eocene |
Early Oligocene |
Mississippi |
Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. |
1980 |
| details |
Late Eocene |
|
New Mexico |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Late Paleocene |
Early Eocene |
North Dakota |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |