Skull Detail with Feathers (IMAGE) Smithsonian Caption This is a detail of the top of the skull showing feathers adhering to the cranium of Apteribis sp. Credit Carla Dove 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.