Javelina Formation, Late Cretaceous geological formation in Big Bend National Park, Texas, United States.
The Javelina Formation contains layers of sandstone and mudstone with purple and gray bands marking different periods of geological development.
Scientists dated the middle section of the formation to 69 million years ago during the Maastrichtian stage of the Late Cretaceous period.
The formation contains numerous fossil remains, including bones from Alamosaurus, Tyrannosaurus, Edmontosaurus, and the pterosaur Quetzalcoatlus.
Researchers access the formation through Big Bend National Park, where exposed outcrops provide opportunities for geological and paleontological studies.
The formation reveals evidence of ancient meandering river channels and sandbanks that existed during the final age of dinosaurs.
Location: Texas
GPS coordinates: 29.30000,-103.40000
Latest update: March 7, 2025 02:52
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