aardonyx is a genus of dinosaur. it lived in what is now south africa during the early jurassic about 195 million years ago. the aardonyx had a long, slender neck and a small head. it had a thick, barrel chest and primarily stood on two legs, but could walk on four. it was 20 feet long and 6 feet tall. it weighed about half a ton. its diet was herbivorous.