<i>Hyla sanchiangensis</i> (IMAGE) University of California - Berkeley Caption The frog Hyla sanchiangensis from eastern China is a descendant of one of three lineages (Hyloidea) that made it through Earth's last mass extinction 66 million years ago to flourish worldwide today. It's ancestors diversified out of South America. Credit Image courtesy of Peng Zhang, Sun Yat-Sen University. Usage Restrictions None 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.