Cranial Base of Ardipithecus ramidus (image) Arizona State University Caption This is the 4.4 million-year-old cranial base of Ardipithecus ramidus from Aramis, Middle Awash research area, Ethiopia. Credit Photo courtesy Tim White. Usage Restrictions Image may be used accompanying coverage of this paper only. All other use by permission of ASU Institute of Human Origins only. 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.