Simplified Mesozoic Avian Cladogram (IMAGE) Chinese Academy of Sciences Headquarters Caption This is a simplified Mesozoic avian cladogram showing the possible phylogenetic positions of Chongmingia zhengi. Credit Image by SHI Aijuan 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.