Coelophysis bauri was an early theropod dinosaur that roamed southwestern North America during the Late Triassic Period. Almost ten feet long and with a slender and elongated build, Coelophysis could have been a sociable pack hunter as suggested by fossil finds in which over a thousand specimens have been found close together. However, it is also possible that these were simply congregations of otherwise unaffiliated individuals caught together in flash floods.