1.41" Serrated, Allosaurus Tooth - Bone Cabin Quarry, Wyoming

Allosaurus was a genus of carnosaurian theropod that lived from 156 to 145 million years ago during the Late Jurassic. Allosaurus species were predators with massive skulls, serrated teeth, and gaping jaws. This powerful and plentiful carnivore genus could grow more than 30 feet long. Their fossils are abundant in the Morrison Formation, leading some to suggest that Allosaurus species may have been pack hunters.

The Bone Cabin Quarry has historical significance because it was discovered in 1897 and excavated by the American Museum of Natural History from 1898 through 1905. It lies near the famous Como Bluff and got its name from a nearby sheepherder's cabin built entirely out of fossil dinosaur bones. This quarry now lies on private land, where it continues to be excavated.