Hannold Hill Formation
| Hannold Hill Formation | |
|---|---|
| Stratigraphic range: Wasatchian | |
| Type | Geological formation |
| Unit of | Tornillo Group |
| Location | |
| Coordinates | 29°24′N 103°06′W / 29.4°N 103.1°W |
| Approximate paleocoordinates | 33°42′N 89°00′W / 33.7°N 89.0°W |
| Region | Texas |
| Country | United States |
| Type section | |
| Named for | Hannold Hill |
The Hannold Hill Formation is an Early Eocene (Wasatchian) geologic unit in the western United States. It preserves the fossilized remains of the ray Myliobatis and gar.