Coelophysis
Small, bipedal carnivore from the Late Triassic of the southwestern US.
It was a small, slenderly built, ground-dwelling, bipedal carnivore that could grow up to 3 m (9.8 ft) long. Coelophysis is one of the earliest known dinosaur genera and is one of the most specimen-rich dinosaur genera.
- field
- Paleontology
- known_for
- One of the earliest known dinosaur genera; one of the most specimen-rich dinosaur genera; type species C. bauri
Lore & Background
Cope named two species: Coelurus longicollis and Coelurus bauri, the latter named after German paleontologist Georg Baur. Later that year, Cope reclassified the material into the genus Tanystrophaeus, creating Tanystrophaeus longicollis and Tanystrophaeus bauri, and also named Tanystrophaeus willistoni.
Reader's Guide
Coelophysis is significant as one of the earliest known dinosaur genera and one of the most specimen-rich, providing extensive insight into Late Triassic theropod anatomy and ecology. The genus has taxonomic complexity: Megapnosaurus was once considered a species within Coelophysis but is now considered valid, and the names Longosaurus and Rioarribasaurus are synonymous with Coelophysis. Scattered material representing similar animals has been found worldwide in some Late Triassic and Early Jurassic formations, indicating a broad distribution.
Did You Know?
- Coelophysis could grow up to 3 m (9.8 ft) long.
- The Ghost Ranch quarry contained hundreds of skeletons of Coelophysis in a single concentration.
- The names Longosaurus and Rioarribasaurus are synonymous with Coelophysis.
Frequently Asked Questions
What is Coelophysis?
Coelophysis was a lean, two-legged meat-eating dinosaur that roamed the Earth during the Late Triassic. It ranks among the oldest recognized dinosaur lineages and is especially well represented in the fossil record thanks to the sheer volume of its remains that have been uncovered.
How big was Coelophysis?
This predator grew to roughly three meters (about ten feet) in total length, giving it a compact, lightweight frame. Its slender build and upright, bipedal posture set it apart from bulkier carnivores that would appear later in the Mesozoic.
Where and when did Coelophysis live?
Fossil sites in the southwestern United States have yielded its bones, placing it in the Late Triassic, more than 200 million years ago. It was strictly a land-dweller, moving on two legs across the arid environments of that ancient region.
What did Coelophysis eat?
As a carnivore, it preyed on smaller animals in its Late Triassic habitat. Its slender, agile build suggests it relied on speed and quickness to catch prey rather than overpowering large animals.
Why is Coelophysis important to paleontology?
Scientists value this genus because it is both one of the oldest established dinosaur lineages and one of the most abundantly fossilized, providing an unusually rich set of skeletal material to examine. That depth of evidence has made it a key reference for reconstructing early dinosaur anatomy, growth, and social behavior.
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