Hadrosaur Teeth and Phalanx in Matrix-Texas

Taxa: Indeterminate Hadrosaur Geology: Aguja formation Age: Cretaceous-Campanian Locality: Brewster County, Texas No repairs or restorations.  Aguja formation Hadrosaurs Hadrosaurs from the Aguja Formation, primarily found in Big Bend National Park, Texas, are the most abundant large terrestrial vertebrate fossils in this Late Cretaceous unit, especially in the upper shale member. Fossils are often fragmentary, with teeth and postcranial bones commonly recovered from stream and floodplain deposits, reflecting the deltaic and fluvial environments of the Aguja Formation during the Campanian.  Aguja formation The Aguja Formation is a Late Cretaceous geological formation exposed in West Texas (USA) and parts of northern Mexico. It consists mainly of sandstones and shales, with some lignite and mudstone, deposited in environments ranging from marine and deltaic to inland floodplain. The formation records the retreat of the Western Interior Seaway and features rich fossil deposits, including dinosaurs, turtles, and fossil plants such as palms. It is particularly well exposed in Big Bend National Park and is notable for its complex stratigraphy and diverse terrestrial vertebrate fauna.