<i>Changchunsaurus</i> Tooth Replacement (IMAGE) University of Toronto Caption A thin section showing a partly worn tooth of Changchunsaurus and the unique position of its developing replacement tooth. Credit University of Toronto Mississauga Usage Restrictions Please credit U of T Mississauga 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.