Skull of Gansu hyena (IMAGE) University of California - Berkeley Caption Drawing of the skull of the Gansu hyena. Note the rounded and expanded ear chamber to the right of the jaw joint, indicating similar hearing capability as living aardwolves. Credit Mick Ellison, 2020 Usage Restrictions Please credit Mick Ellison 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.