develops_from develops from develops from existence ends during has skeleton fully formed stage organism subdivision limb extremity flipper extremities limb sensu Vertebrata pentadactyl limb free limb A paired appendage that is evolved from a paired fin. The extent of this structure includes autopod, stylopod and zeugopod regions when present, but excludes the girdle and its parts. tetrapod limb limb bud skeleton of limb paired limb/fin