| original |
Late Eocene |
Early Oligocene |
Canada(British Columbia) |
Mustard,P.S. et al. Stratigraphy and evolution of Tertiary Georgia Basin and subjacent Upper Cretaceous sedimentary rocks, Southwestern British Columbia and Northwestern Washington State. (In: Geology and geological hazards of the Vancouver region, southwestern British Columbia. J.W.H.Monger, editor) |
1994 |
| original |
Maestrichtian |
Eocene |
Alaska(North Slope) |
Frederiksen,N.O. et al. Palynological dating of Upper Cretaceous to Middle Eocene strata in the Sagavanirktok and Canning Formation, North Slope of Alaska. |
1998 |
| original |
Early Eocene |
Middle Eocene |
Alaska(North Slope) |
Frederiksen,N.O. et al. Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska. |
2002 |