Class Cephalopoda Cuvier, 1795 - cephalopods Subclass Coleoidea Bather, 1888 Superorder Vampyropoda Boletzky, 1992 see Superorder Octopodiformes Young et al., 1998 Order Vampyromorpha Grimpe, 1917 - vampire squids see Order Vampyromorphida Pickford, 1939 Suborder †Prototeuthina Naef, 1921 Family †Plesioteuthididae Naef, 1921