.88" Fossil Ankylosaur Phalange - Aguja Formation, Texas

Ankylosaurs were herbivorous dinosaurs that lived during the Cretaceous (65-68 million years ago). As the evolution of Ankylosaurus progressed, they developed bony armor that covered their bodies in the form of plates, scutes and spikes, with some even developing armor on their eyelids. While their armor and bone-shattering tail club are thought to have been used for defensive purposes against predators such as Tyrannosaurus, it's possible that some of the armor on their head may have been used for display. Adult Ankylosaurs are believed to have reached up to 25 feet in length and weigh 3.3 tons!

This specimen was collected within the past year on private deeded property in Brewster County, Texas. You won't see any other dinosaur material from the Aguja and Javelina Formations for sale because nearly all of the formations lie within the boundaries of Big Bend National Park, where fossils may not be collected, or in Mexico, where fossils cannot be commercially traded. One of our partners was lucky enough to purchase several hundred acres of ranch land in Texas containing a good exposure of these formations, and we will be offering more material from the locality in the future.