Tyrannosaur Rex Tooth

Age: 66 - 65.5 Million Year Old, Late Cretaceous 

Species: Tyrannosaurus Rex

Discovered: Newell, South Dakota, Hell Creek Formation

Notes: T-Rex was a massive carnivorous dinosaur that lived in western North America during the late cretaceous, growing up to 40ft long and 12ft tall and weighing between 11,000 - 15,000lbs. It is considered the most massive carnivore that ever roamed what is now North America.