Rock formation · Cretaceous · United States, Mexico
Aguja Formation
The Aguja Formation holds 10 genera from this site (9th of 26 formations), in 44 fossil records. Its dinosaur-bearing records date to the Campanian (83.6–72.1 Ma), with finds in Texas and Chihuahua.
Genera recorded here
Records in this formation, and the share of each genus's total records that come from it.
| Genus | Records here | Age | Group | Share of genus |
|---|---|---|---|---|
| Agujaceratops | 16 | 83.6–72.1 Ma | Horned dinosaurs | 100% |
| Saurornitholestes | 14 | 83.6–66 Ma | Theropods | 9% |
| Chirostenotes | 3 | 83.6–66 Ma | Theropods | 11% |
| Edmontonia | 3 | 83.6–66 Ma | Armoured & plated dinosaurs | 19% |
| Kritosaurus | 3 | 83.6–72.1 Ma | Ornithopods | 12% |
| Ornithomimus | 1 | 83.6–66 Ma | Theropods | 3% |
| Panoplosaurus | 1 | 83.6–66 Ma | Armoured & plated dinosaurs | 7% |
| Pentaceratops | 1 | 83.6–72.1 Ma | Horned dinosaurs | 7% |
| Stegoceras | 1 | 83.6–72.1 Ma | Dome-headed dinosaurs | 2% |
| Struthiomimus | 1 | 83.6–66 Ma | Theropods | 6% |
Age ranges of its genera
Overall stage range of each genus (all formations).
Where it crops out
Fossil records with coordinates.
Groups present
Theropods (4), horned dinosaurs (2), armoured & plated dinosaurs (2), ornithopods (1), dome-headed dinosaurs (1).