| details |
Miocene |
|
Alaska |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Middle Miocene |
Late Neogene |
Alaska |
Foster,H.L. et al. Fossil pollen from nonmarine sedimentary rocks of the eastern Yukon-Tanana Region, East-Central Alaska. (In: Geologic studies in Alaska by the U.S. Geological Survey,1989) |
1990 |
| details |
Middle Miocene |
Late Miocene |
Alaska |
Liu,G. et al. Climatic comparison of Miocene pollen floras from northerneast China and southcentral Alaska, USA. |
1994 |
| 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 |
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 |
Eocene |
|
Alabama |
Graham,A. Origin and evolution of the biota of southeastern North America. |
1964 |
| details |
Maastrichtian |
Paleocene |
Alabama |
Jarzen,D.M. The terrestrial palynoflora from the Cretaceous-Tertiary transition, Alabama, USA. |
1978 |
| details |
Oligocene |
Recent |
Alabama |
Graham,A. The Tertiary history of the northern temperate element in the northern Latin America biota. |
1999 |
| details |
Cenomanian |
|
Africa |
Burger,D. Observations on the Earliest angiosperm development with special reference to Australia. |
1981 |
| details |
Albian |
Tertiary |
Africa |
Couper,R.A. Spore-pollen correlation of the Cretaceous rocks of the northern and Southern Hemispheres. (In: Palynology in Oil Exploration, Aureal T. Cross, editor) |
1964 |