The Coelophysis is New Mexico's official state fossil. It lived in the late Triassic Period and has only been found in New Mexico. Popular questions about this dinosaur are answered here. In addition, there are numerous documents about...

Deinonychus antirrhopus was a small, carnivorous theropod dinosaur from the Cretaceous Period, first discovered in the United States. A study of its skeleton revealed that it was fast-moving, which went against previously held beliefs...