page_title: Caseosaurus
section_title: Classification
hierarchical_section_title: Caseosaurus / Classification
caption_attribution_description: The herrerasaurian dinosauriform Caseosaurus crosbyensis Hunt, Lucas, Heckert, Sullivan, and Lockley, 1998 (NMMNH P-35995) from Synder Quarry, Rio Arriba County, New Mexico, USA; Carnian, Late Triassic; right ilium in lateral (A) and medial (B) views.
context_page_description: Caseosaurus is a dubious genus of herrerasaurid theropod dinosaur that lived approximately 237 to 227 million years ago during the latter part of the Triassic Period in what is now Texas, in North America. Caseosaurus was a small, lightly-built, bipedal, ground-dwelling carnivore, that could grow up to 2 m long.
context_section_description: In 1998, Hunt et al., examined UMMP 8870, a partial hip bone (ilium) that was assigned as a paratype of the dinosaur Chindesaurus and made it the holotype of a new dinosaur, Caseosaurus crosbyensis. Irmis et al. concluded that an ilium, NMMNH P-35995 originally assigned by Heckert et al., in 2000 to the dinosaur Eucoelophysis, strongly resembles the Caseosaurus holotype. Langer (2004) examined the ilium and reassigned it back to the genus Chindesaurus. Other paleontologists also agree that this may be the same dinosaur as Chindesaurus, which lived during the same period and geological region.
  However, in 2018 Caseosaurus was considered a valid species, as a relative of Herrerasaurus outside of the Dinosauria.
caption: Referred ilium
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