Bone Wars
A third North American genus called "Stegomus" was named by Othniel Charles Marsh in 1896. Marsh had a long-time rivalry with Cope that was made famous in the Bone Wars of the late 19th century, in which the two tried to out-compete one another in the field and in scientific literature. Unlike Cope's aetosaurs, "Stegomus" was found from the eastern United States in Connecticut. Marsh also recognized "Stegomus" as an aetosaur rather than a phytosaur in his initial description of the genus. Like Cope, many paleontologists tended to consider aetosaur scutes to belong to phytosaurs during this time period.