squirrel, they are scansorial mammals that use their patagium to glide, unpowered, to move quickly through their environment.

Evolutionary history

Prior to the 21st century, the evolutionary history of the flying squirrel was frequently debated. This debate was clarified greatly as a result of two molecular studies. These studies found support that flying squirrels originated 18-20 million years ago, are monophyletic, and have a sister relationship with tree squirrels. Due to their close ancestry,

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