Flying squirrels are monophyletic.

摘要: Seven genera of flying squirrels share five characters wrist anatomy, which form a functional complex associated with the support patagium. In these characters, they differ from all tree and ground examined. Among mammals, gliding membranes have evolved independently in several other groups. The manner attachment patagium to forelimb is different each demonstrates morphologies differing that squirrels. This anatomy provides evidence only once among are monophyletic group.