This fellow survived an attack by a predator, probably a Coyote, as indicated by the tooth marks on the back quarter of the carapace, and the healed wound to the eye that faces the camera.
This observation was made to help identify an observation of the same plant earlier in the season, which at that time had purplish basal leaves: https://www.inaturalist.org/observations/204314085
New River Gorge National Park - Thurmond