"Aetosauria is a group of four-legged, armoured reptiles whose terrestrial ecology is concluded to include herbivores and omnivores. Most species of aetosaurs reach a total body length of between 2 and 6 m (6.6-20 feet)."

The extinct animal lived in what is now called the United States during the mid-Triassic Norian, around 218 million years ago. Its fossilized skeleton was found in the Cooper Canyon Formation in Garza County, Texas. It was discovered with associated carapace that includes elements from the left and right sides of the body.