ammonites
Araeoscelis gracilis Williston 1910 (diapsid)

Reptilia - Araeoscelidia - Araeoscelidae

Full reference: S. W. Williston. 1910. New Permian reptiles; rhachitomous vertebrae. Journal of Geology 18:585-600

Belongs to Araeoscelis according to S. W. Williston 1910

Sister taxon: Araeoscelis casei

Type specimen: Its type locality is Craddock Bonebed, Brush Creek, 38 (Arroyo Formation), which is in a Kungurian terrestrial claystone/sandstone in the Arroyo Formation of Texas

Ecology: