Fossil Jaw (image) Arizona State University Share Print E-Mail Caption This is a close up view of the mandible just steps from where it was sighted by Chalachew Seyoum, ASU graduate student, who is from Ethiopia. Credit Brian Villmoare Usage Restrictions Image may be used in conjunction with media coverage of this article. No other use is authorized. Share Print E-Mail 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.