. ©AMNH/C. Chesek
In this well-preserved Rhamphorhynchus muensteri fossil, researchers detected layers of skin threaded with blood vessels, muscles and long fibers that stiffened the wing. Because of the shadowy color of the wing membrane, paleontologists call this fossil “Dark Wing.” What other secrets do pterosaur fossils reveal? Find out when “Pterosaurs: Flight in the Age of Dinosaurs” opens January 30, 2016! http://pterosaurs.carnegiemnh.org/