Coelophysis Facts
| Diet | Carnivore |
| Height | 1m |
| Length | 3m |
| Weight | 25 kg |
| Speed | 30 km/h |
| Environment | Land |
| Era | Triassic |
| Period | Triassic |
| Type | Theropod |
| Location | United States |

| Diet | Carnivore |
| Height | 1m |
| Length | 3m |
| Weight | 25 kg |
| Speed | 30 km/h |
| Environment | Land |
| Era | Triassic |
| Period | Triassic |
| Type | Theropod |
| Location | United States |
Coelophysis was one of the earliest and most abundant theropod dinosaurs, living approximately 227 to 201 million years ago during the late Triassic period in what is now the southwestern United States. This sleek predator represents a crucial stage in dinosaur evolution, showing us what some of the first successful theropods looked like as they began to dominate terrestrial ecosystems.
Standing about 1 metre tall at the hip and measuring roughly 3 metres in length, Coelophysis was a lightly built dinosaur with a long, slender neck and tail. Its skull was narrow and elongated, filled with sharp, serrated teeth perfect for slicing through flesh. The dinosaur's hollow bones—which gave it its name meaning 'hollow form'—made it remarkably lightweight for its size, allowing it to be an agile and swift hunter across the arid landscapes of the late Triassic.
As a carnivore, Coelophysis likely fed on small reptiles, early mammals, fish, and possibly insects. Its long, powerful legs suggest it was an excellent runner, capable of pursuing prey at speeds of up to 30 kilometres per hour. The dinosaur's grasping hands, equipped with sharp claws, would have been ideal for catching and holding struggling prey.
What makes Coelophysis particularly remarkable is the exceptional preservation of numerous specimens found together, providing paleontologists with unprecedented insights into the anatomy, growth patterns, and possibly even the social behaviour of one of Earth's earliest successful dinosaur species.
Coelophysis had a distinctively long, narrow skull with sharp serrated teeth, a slender S-curved neck, and remarkably lightweight hollow bones. Its body was gracefully built with long, powerful legs and grasping hands equipped with sharp claws, giving it the appearance of a scaled-up ground bird.
Evidence suggests Coelophysis may have lived in groups, as multiple individuals have been found preserved together in bone beds. Some specimens contain what were once thought to be evidence of cannibalism, though this interpretation is now debated among scientists.
Coelophysis has appeared in several documentaries about prehistoric life and is featured in the BBC series 'Walking with Dinosaurs', showcasing life in the Triassic period.
| Phylum | Chordata |
| Class | Saurischia |
| Genus | Coelophysis |
Coelophysis was first described by Edward Drinker Cope in 1889. The original fossils were discovered at Ghost Ranch, New Mexico, USA.