| 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 Pliocene |
Early Pleistocene |
Alaska |
Nelson,R,E. et al. Pollen analysis of a Late Pliocene and Early Pleistocene section from the Gubik Formation of Arctic Alaska. |
1985 |
| details |
Late Miocene |
Late Neogene |
Alaska |
Karl,S.M. et al. Tertiary gold-bearing gravel at Livengood, Alaska. (In: Geologic Studies in Alaska. U.S. Geological Survey,1987) |
1988 |
| details |
Maastrichtian |
Paleocene |
Alaska |
Frederiksen,N.O. et al. Palynology of Maestrichtian and Paleocene rocks, Lower Colville River Region, North Slope of Alaska. |
1988 |
| details |
Messinian |
Zanclian |
Alaska |
Stricker,G.D. et al. Mineralogy and stage assignment of some Tertiary Coal from the Tikishla Park Drill Hole, Anchorage Alaska. (In: Geologic Studies in Alaska by the United States Geological Survey. J.P.Galloway and T.D. Hamilton, editors) |
1987 |
| details |
Early Pliocene |
|
Alaska |
Yeend,W. et al. Stratigraphy and palynology of an Upper Tertiary terrace deposit of the ancestral Yukon River near Circle, Alaska. (In: Geologic Studies in Alaska by the United States Geological Survey. J.H.Dover and J.P. Galloway, editors) |
1989 |
| details |
Late Neogene |
|
Alaska |
Wolfe,J.A. Neogene floristic and vegetational history of the Pacific Northwest. |
1969 |
| details |
Middle Miocene |
|
Alaska |
Wolfe,J.A. Neogene floristic and vegetational history of the Pacific Northwest. |
1969 |
| details |
Middle Miocene |
|
Alaska |
Wahrhaftig,C. et al. The coal-bearing group in the Nenana Coalfield, Alaska. |
1969 |
| details |
Late Tertiary |
|
Alaska |
Benninghoff,W.S. et al. Preliminary report on the Upper Cenozoic Carbonaceous deposits in the Johnson River area, Alaska range . |
1960 |
| details |
Late Tertiary |
Early Quaternary |
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 |
Early Miocene |
Middle Miocene |
Alaska |
Yeend,W.E. Tertiary and Quaternary deposits at the Palisades, Central Alaska. |
1977 |
| details |
Early Pliocene |
Middle Pliocene |
Alaska |
Ager,T.A. et al. Pliocene terrace gravels of the ancestral Yukon River near Circle Alaska; Palynology, paleobotany, paleoenvironmental reconstruction and region correlation. (In: Tertiary Quaternary Boundaries. T.A. Ager et al, editors) |
1994 |
| 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 |
Tertiary |
|
Alaska |
Lamberson,M.N. Palynological analysis of three Tertiary Alaskan Subbutuminous Coal Seams. |
1984 |
| 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 |