family tree of birds (IMAGE) The University of Hong Kong Caption Figure 1. Simplified family tree of birds. All seven fossil birds with meals fossilised in their stomachs are colour coded. The other 150+ named species of Mesozoic birds do not preserve any meals. Credit Image credit: Case Vincent Miller & Michael Pittman, silhouettes from phylopic.org. Usage Restrictions N/A License Original 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.