| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Aptian | Cenomanian | Alaska(North Slope) | Langenheim,R.L. et al. Cretaceous Amber from the Arctic Coastal Plain of Alaska | 1960 |
| details | Middle Eocene | Early Oligocene | Alabama | Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. | 1980 |