Simulation of Australopithecus Africanus (VIDEO) Arizona State University This video is under embargo. Please login to access this video. Caption Compressive stress in the cranium of Australopithecus africanus, an extinct early human, imposed by biting on the premolar teeth. Bright colors correspond to high stresses, and indicate that a bony pillar running alongside the opening of the nasal cavity acts as a strut that structurally reinforces the face against premolar loads. Credit Simulation courtesy of Arizona State University and the "Hominid Feeding Biomechanics" research team Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.