New pterosaur fossils and studies are revealing just how unusual these huge, flying reptiles from the dinosaur era were. Based on current findings, many pterosaurs, which lived on nearly every continent during the Mesozoic Era from approximately 248 million to 65 million years ago, possessed tweezer-like heads, body fur and incredibly large, varied head crests. The recent discoveries, outlined in the current issue of Biologist, also suggest that pterosaurs walked on four limbs instead of two, as previously believed. Paleontologists have struggled with this issue, due to the bat-like way the flying reptile's wings were attached to its fore-limbs and...