LATE TRIASSIC NORIAN AGE
Western North America
Updated 091612
Coelophysids of different types are found throughout the Norian. Carniverous dinosaurs in the Triassic are much more common and diverse than originally projected. The best known assemblage from the final stage of the Chinle is the Coelophysis quarry at Ghost Ranch. The quarry has at least 1,000 individuals. This makes Coelophysis one of the best known dinosaur.s.
Coelophysids became the most wide spread by the Late Triassic. These small to medium large animals were very sucessful surviving into the Jurassic. The preyed on small hebivores but flocks could have enaged the medium sized ateosaurs and dicynodonts.
In the North American west there are several coelophysids. WhileCoelophysisis the best know, the smaller Camposaurus and larger Eucoelophysis overlapped the same times. Cynodonts are restricted to small predator rolls.
Cyndonts have left a light track in the fossil records. They are present but not well known. Their descendants will become mammals.