Main Slab of Pengornithid Enantiornithine (image) Chinese Academy of Sciences Headquarters Share Print E-Mail Caption Main slab of Pengornithid Enantiornithine, preserved in three-dimensions unlike most compression fossils from the Jehol Biota. Scale bar is one centimeter. Credit Jingmai O'Connor Usage Restrictions None Share Print E-Mail 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.