Chicken and Alligator Morphology (IMAGE) Imperial College London Caption This image shows the skull bones and brain shape of a chicken (top) and an American alligator (bottom). Credit Fabbri et al., 2017 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.