English: Aardonyx is a basal sauropodomorph with many intermediate features between prosauropods and sauropods. It grew to about 6 m in length, and was facultatively bipedal. This means that it would normally walk on two legs, but could move on all fours as well. Its jaws also bear transitional features. They are more narrow than more derived sauropods, but seem to indicate sauropod-like reduced cheeks. This unusual combination of features suggest feeding behavior transitioning toward the bulk-browsing common in later sauropods.