Gojirasaurus is a genus of dinosaur named after Gojira (the Japanese name for Godzilla). It was discovered in Revuelto Creek, Quay County, New Mexico. The type specimen is a partial skeleton of a subadult, about 5.5 m (18 ft) long, which can be extrapolated to a weight of approximately 150–200 kg (330–440 lb). An adult would have been around 6.5 m (21 ft) long. It lived during the Norian age of the Late Triassic Period, between 220 and 209 million years ago.
Gojirasaurus was a member of the Coelophysoidea, which were small, early theropods. Gojirasaurus was perhaps the largest meat-eating dinosaur known from the Triassic Period and enormous for its time. A serrated tooth, four ribs, four vertebrae, and a few other bones have been uncovered it would have preyed upon Placerias.