 While features of the limbs indicate that aetosaurs probably dug for food , features of the skull and teeth can indicate what kind of food they were eating . Aetosaurs have many derived features not seen in other crurotarsans , which indicate that they are adapted to a different diet . Unlike the sharp , recurved teeth of other <unk> archosaurs , aetosaurs had simple , conical teeth . The tips of the jaws were edentulous , or toothless , and probably supported a beak . The teeth have very little wear , suggesting that aetosaurs did not consume stiff and tough plant material . It is more likely that they consumed non @-@ abrasive vegetation such as soft leaves . 
