A Pterodactylus preserved beautifully uncrushed from the famous Solnhofen Limestone in Southern Germany. Kimmeridgian, Jurassic. Ctenochasmatoidea Photo took at the Dinosaurier Freilicht Museum, Altmühltal

A Pterodactylus preserved beautifully uncrushed from the famous Solnhofen Limestone in Southern Germany. Kimmeridgian, Jurassic. Ctenochasmatoidea Photo took at the Dinosaurier Freilicht Museum, Altmühltal

Parallel fibers that stiffened a pterosaur’s wing membrane—each just two-thousandths of an inch (0.05 millimeters) thick—are visible in this fossil of a Rhamphorhynchus. The fossil was found in Germany’s Solnhofen limestone beds, where incredibly fine grain preserves minute details [1280×1024]

Parallel fibers that stiffened a pterosaur’s wing membrane—each just two-thousandths of an inch (0.05 millimeters) thick—are visible in this fossil of a Rhamphorhynchus. The fossil was found in Germany’s Solnhofen limestone beds, where incredibly fine grain preserves minute details [1280×1024]