A Bone Trabecle of This Vertebral Cavity (image) University of Bonn Share Print E-Mail Caption A bone trabecle of this vertebral cavity shows the fine fibers of the pneumosteum, which indicate the former presence of air sacs. Credit (c) Modified from Lambertz et al. (2018) Biol. Lett. doi:10.1098/rsbl.2017.0514 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.