Not Your Ordinary Feather (IMAGE) DOE/SLAC National Accelerator Laboratory Caption The is the fossilized feather long considered to be the "holotype" specimen of Archaeopteryx. Credit Brad Plummer/SLAC 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.