Dryolimnas Rail Flightless vs. Flighted (image) University of Portsmouth Share Print E-Mail Caption Wing bones fossils of flighted (right) and flightless Dryolimnas rails. Credit Dr Julian Hume. 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.