Flying Squirrel: Pteromyini
While the flying squirrel is not capable of powered flight as such, it has been known to glide between trees of lengths up to 90 meters. Studies do show that these flying squirrels might well have originated 18–20 million years ago!

 Flying Squirrel: Pteromyini

While the flying squirrel is not capable of powered flight as such, it has been known to glide between trees of lengths up to 90 meters. Studies do show that these flying squirrels might well have originated 18–20 million years ago!