| details |
Early Villafranchian |
|
Algeria |
Beucher,F. Pollen analysis of sediments of Lower. Villafranchian age from the North-West Sahara. |
1965 |
| 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 |
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 |