| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| original | Middle Campanian | Late Campanian | Colorado | Gies,T.F. Palynology of sediments boardering some Upper Cretaceous strand lines in Northwestern Colorado. | 1972 |
| original | Santonian | Canada(Alberta) | Rouse,G.E. The application of a new nomenclatural approach to Upper Cretaceous plant microfossils from Western Canada. | 1957 |