Dryptosaurus aquilunguis was a medium-sized predatory dinosaur that hunted in eastern North America during the Late Cretaceous Period, between 67 and 66 million years ago. Growing up to 25 feet long and weighing almost two tons, it would have been a distant relative and contemporary to Tyrannosaurus rex, although they would have lived on opposite sides of the Western Interior Seaway that divided the continent at the time. Its main prey would probably have been hadrosaurid (or “duck-billed”) dinosaurs.