The early dinosaur "Coelophysis" inhabited the region. Ghost Ranch is famous for an abundance of fossils of the similar theropod "Coelophysis". They included small hunters like "Coelophysis" and (possibly) larger predators like "Dilophosaurus". Case then mistakenly assigned these specimens to the dinosaur genus "Coelophysis". These footprints were likely made by an unidentified, primitive dinosaur similar to "Coelophysis". The camera tracks a "Coelophysis" through the woods. It was closer to the coelophysids, including the well-known "Coelophysis", than to "Liliensternus". This would make "Rioarribasaurus" a definite synonym of "Coelophysis", specifically a junior objective synonym. Examples of coelophysoids include "Coelophysis", "Procompsognathus" and "Liliensternus". Nesbitt was opening jackets of blocks in order to find new specimens of "Coelophysis". "Hesperosuchus" was a contemporary of "Coelophysis", a primitive predatory theropod dinosaur. In 2000, Rauhut noted that its scapula is more slender than that of "Coelophysis bauri". He later gave them their own genus, "Coelophysis". "Podokesaurus" shares the Coelophysidae taxon with "Camposaurus" and "Coelophysis". The quick "Coelophysis" is portrayed as a very successful inhabitant of this world.