Phylum Mollusca Linnaeus, 1758 - molluscs Class Polyplacophora Blainville, 1816 - chitons Subclass Neoloricata Bergenhayn, 1955 Order Chitonida Thiele, 1909 1 Suborder Acanthochitonina Bergenhayn, 1930 2 Suborder Chitonina Thiele, 1909