| 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 |
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 |
Jackson |
|
Alabama |
Frederiksen,N.O. Middle Eocene to Early Oligocene plant communities of the Gulf Coast. (In: Communities of the Past. A.J.Boucot and W.B.N.Berry, editors) |
1981 |
| details |
Late Miocene |
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Aegean Sea |
Lyberis,N. et al. Datation of the extensive tectonism in the North Aegean Region, (Greece). Palynologic data. |
1983 |
| details |
Late Neogene |
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Ballesio,R. et al. The Upper Neogene of the Valreas Basin |
1978 |