The Vampyromorphida are characterized by such apomorphies as the possession of photophores , a peculiar type of uncalcified endoskeleton ( the gladius ) , eight webbed arms , and the two velar filaments .
The Vampyromorphida are characterized by the possession of photophores , a peculiar type of uncalcified endoskeleton called `` gladius '' , 8 webbed arms and the 2 velar filaments .