Named By: A. P. Hunt, S. G. Lucas, A. B. Heckert, R. M. Sullivan & M. G. Lockley - 1998.
Classification: Chordata, Reptilia, Dinoauria, Theropoda, Herrerasauridae.
Species: C. crosbyensis (type).
Size: Up to about 2 meters long.
Known locations: USA - Petrified Forest Formation.
Time period: Triassic.
Fossil representation: Partial post cranial fossils.
Caseosaurus is recorded as being a genus of small theropod dinosaur that lived in what is now the South Western USA back during the Triassic. However, since being named in 1998, many have speculated that Caseosaurus may actually be synonymous with the genus Chindesaurus which was named earlier in 1995. If true then fossils relating to Caseosaurus would be added to Chindesaurus since that was named first.
- Late Triassic dinosaurs from the western United States. - Géobios 31(4):511-531. - A. P. Hunt, S. G. Lucas, A. B. Heckert, R. M. Sullivan & M. G. Lockley - 1998.
- A re-evaluation of the enigmatic dinosauriform Caseosaurus crosbyensis from the Late Triassic of Texas, USA and its implications for early dinosaur evolution. - Acta Palaeontologica Polonica. - Matthew G. Baron & Megan E. Williams - 2018.