A bizarre Jurassic maniraptoran theropod with preserved evidence of membranous wings

A recently discovered fossil belonging to the Scansoriopterygidae, a group of bizarre dinosaurs closely related to birds, represents a new scansoriopterygid species and preserves evidence of a membranous aerodynamic surface very different from a classic avian wing. At the base of the dinosaur lineage that eventually led to birds there is a small group of bizarre dinosaurs called scansoriopterygids. They were very small, often with long digits...