| details |
Pliocene |
|
Arizona |
Fleming,R.F. Cretaceous pollen in Pliocene Rocks: Implications for Pliocene climate in Southwestern United States |
1994 |
| details |
Late Senonian |
|
Arctic Ocean |
Brattseva,G.M. Palynological studies of Upper Cretaceous Barents Sea deposits. |
1985 |
| details |
Maastrichtian |
|
Alaska(North Slope) |
Frederiksen,N.O. Pollen zonation and correlation of Maastrichtian marine beds and associated strata, Ocean Point Dinosaur locality, North Slope, Alaska. (In: Evolution of Sedimentary Basins. A.C.Hoffman, Project Coordinator) |
1990 |
| details |
Middle Campanian |
Maastrichtian |
Alaska |
Frederiksen,N.O. Changes in floral diversities, flora turnover rates, and climates in Campanian and Maestrichtian time, North Slope of Alaska |
1989 |