The skull of "Epidexipteryx" is also unique in a number of features. It had teeth only in the front of the jaws, with unusually long front teeth angled forward, a feature only seen in "Masiakasaurus" among other theropods. The tail of "Epidexipteryx" bore unusual vertebrae towards the tip which resembled the feather-anchoring pygostyle of modern birds and some oviraptors.