Kingdom Animalia Linnaeus, 1758 - animals Phylum Mollusca Linnaeus, 1758 - molluscs Class Cephalopoda Cuvier, 1795 - cephalopods Subclass Coleoidea Bather, 1888 1 Order Sepioida - cuttlefish 2 Order Teuthoida - squids 3 Order Octopoda Leach, 1817 - octopuses 4 Order Vampyromorpha Grimpe, 1917 - vampire squids see Order Vampyromorphida Pickford, 1939