| details |
Campanian |
Maestrichtian |
Alaska |
Vandergon,M.A. Microfossil compilation of Mesozoic and Cenozoic units Arctic National Wildlife Refuge, Northeastern Alaska. |
1986 |
| details |
Neogene |
|
Alaska |
Vandergon,M.A. Microfossil compilation of Mesozoic and Cenozoic units Arctic National Wildlife Refuge, Northeastern Alaska. |
1986 |
| details |
Campanian |
Maestrichtian |
Alaska |
Vandergon,M.A. Microfossil compilation of Mesozoic and Cenozoic units Arctic National Wildlife Refuge, Northeastern Alaska. |
1986 |
| details |
Early Miocene |
Middle Miocene |
Alaska |
Dallegge,T.A. et al. High-resolution chronostratigraphic analyses of the Tertiary Kenai Group, south-central Alaska: Applications to basin analysis and coal-bed methane assessment: An update. |
2003 |
| details |
Middle Eocene |
Early Oligocene |
Alabama |
Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. |
1980 |
| details |
Oligocene |
Miocene |
Africa(Sahara) |
Trofimov,D.M. et al. On the range and age of the Continental Terminal Series, (Middle Eocene - Miocene), of southwest Sahara. |
1977 |