details |
Late Oligocene |
Miocene |
Alaska |
Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
details |
Late Neogene |
|
Alaska |
Hopkins,D.M. et al. Upper Tertiary sediments in Alaska and North-Western Canada. |
1960 |
details |
Early Miocene |
Middle Miocene |
Alaska |
Yeend,W.E. Tertiary and Quaternary deposits at the Palisades, Central Alaska. |
1977 |
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 |
Eocene |
|
Alabama |
Graham,A. Origin and evolution of the biota of southeastern North America. |
1964 |
details |
Oligocene |
Recent |
Alabama |
Graham,A. The Tertiary history of the northern temperate element in the northern Latin America biota. |
1999 |