JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Coelurosauravus prehistoric lizards. Computer illustration of two Coelurosauravus sp. lizards in a tree, showing the specialised wing-like structures that allowed it to glide. Coelurosauravus lived during the Upper Permian period (around 250 million years ago).
Model release not required. Property release not required.