Lithostratigraphy
Cretaceous
| Maastrichtian | Aguja formation (Campanian – Maastrichtian) |
| Campanian | Aguja formation (Campanian – Maastrichtian) |
Not placed in stage
Olmos formation (Upper Cretaceous)
| Maastrichtian | Aguja formation (Campanian – Maastrichtian) |
| Campanian | Aguja formation (Campanian – Maastrichtian) |
Olmos formation (Upper Cretaceous)