Aguja Formation
| Aguja Formation | |
|---|---|
| Stratigraphic range: Lower to Middle Campanian ~ | |
Outcrops of the Aguja Formation, Big Bend National Park, Texas | |
| Type | Geological formation |
| Unit of | Tornillo Group |
| Sub-units | La Basa Sandstone Member, Rattlesnake Mountain Sandstone Member, Terlingua Creek Sandstone Member, Abajo Shale Member, and Alto Shale Member |
| Underlies | Javelina Formation |
| Overlies | Pen Formation |
| Lithology | |
| Primary | Sandstone, conglomerate, claystone |
| Other | Mudstone, shale, limestone |
| Location | |
| Coordinates | 29°18′N 103°30′W / 29.3°N 103.5°W |
| Approximate paleocoordinates | 35°48′N 77°00′W / 35.8°N 77.0°W |
| Region | Texas, Chihuahua, Coahuila |
| Country | United States, Mexico |
The Aguja Formation is a geological formation in North America, exposed in Texas, United States and Chihuahua and Coahuila in Mexico, whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. Fossil palms have also been unearthed here.