| details |
Early Pleistocene |
|
Netherlands |
Zagwijn,W.H. Aspects of the Pliocene and Early Pleistocene vegetation in the Netherlands. |
1960 |
| details |
Early Miocene |
Middle Miocene |
Alaska |
Wolfe,J.A. Neogene floristic and vegetational history of the Pacific Northwest. |
1969 |
| details |
Late Miocene |
Recent |
Nd |
Muller,J. Palynological evidence on Early differentiation of angiosperms. |
1970 |
| details |
Miocene |
|
Idaho |
Smiley,C.J. et al. Preservation of Miocene fossils in Unoxidized Lake deposits, Clarkia, Idaho |
1975 |
| details |
Late Neogene |
Quaternary |
Canada(NWT) |
Jackson,L.E. et al. An occurrence of Pre-McOnnell nonglacial sediments Selwyn Mountains, Northwest Territories. |
1985 |
| details |
Pliocene |
Early Pleistocene |
Utah |
Davis,O.K. Priliminary pollen analysis of the Cenozoic sediments of the Great Salt Lake, Utah, USA. |
1999 |