Based on the proportions of related theropods, Daemonosaurus is estimated to have been around 1.5 m (5 feet) long.
Other estimates suggest that Daemonosaurus was at most 2.2 m (7 ft) long and weighed 22 kilograms (49 pounds).
The skull of Daemonosaurus differs considerably from all other Triassic theropods.
The snout is short and bears large premaxillary and maxillary teeth in the upper jaw.
Procumbent teeth project forward from the tips of the upper and lower jaws, which is highlighted in the species name chauliodis that roughly means "buck-toothed".
Daemonosaurus is unique among Triassic theropods because it has an unusually short snout, and all other early theropods had long heads and jaws.
Like the coelophysoids, Daemonosaurus has a kink in its upper jaws, between the maxilla and the premaxilla.

The proportionately large orbit, the short snout, and the apparent lack of fusion between the bones of the braincase suggest that the holotype specimen CM 76821 may be an example of a juvenile dinosaur.
On the other hand, the closure (fusion) of the neurocentral sutures in the vertebrae suggest a mature individual.
Based on the proportions of related theropods, Daemonosaurus is estimated to have been around 1.5 m (5 feet) long. Other estimates suggest that Daemonosaurus was at most 2.2 m (7 ft) long and weighed 22 kilograms (49 pounds). The skull of Daemonosaurus differs considerably from all other Triassic theropods. The snout is short and bears large premaxillary and maxillary teeth in the upper jaw. Procumbent teeth project forward from the tips of the upper and lower jaws, which is highlighted in the species name chauliodis that roughly means "buck-toothed". Daemonosaurus is unique among Triassic theropods because it has an unusually short snout, and all other early theropods had long heads and jaws. Like the coelophysoids, Daemonosaurus has a kink in its upper jaws, between the maxilla and the premaxilla.
The proportionately large orbit, the short snout, and the apparent lack of fusion between the bones of the braincase suggest that the holotype specimen CM 76821 may be an example of a juvenile dinosaur. On the other hand, the closure (fusion) of the neurocentral sutures in the vertebrae suggest a mature individual.
Daemonosaurus