Flying Mammals Lived With Dinos

A new fossil discovery from China shows that a tiny squirrel-like creature glided through the air during the age of dinosaurs, more than 75 million years earlier than scientists had documented that ability in a mammal.

The creature might have even beaten birds into the air.

Like today's flying squirrels, it stretched a furry membrane between its limbs to provide an airfoil for gliding after it jumped from a tree. But it's not related to anything living today.
(via)