Oldest fossil of a flying squirrel sheds new light on its evolutionary tree. New study suggests prehistoric giant flying squirrels roamed present-day Catalonia, Spain, earlier than previously thought and changed very little in almost 12 million years.

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Oldest fossil of a flying squirrel sheds new light on its evolutionary tree. New study suggests prehistoric giant flying squirrels roamed present-day Catalonia, Spain, earlier than previously thought and changed very little in almost 12 million years.