Bison Jaw (IMAGE) University of Washington Caption The third molar from a bison jawbone grows to 3 inches in length and has several times more surface area than a quarter. Credit Kathryn Hoppe Usage Restrictions Use for news purposes only. No commercial use. 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.