Phylum Mollusca Linnaeus, 1758 - molluscs Class Polyplacophora Blainville, 1816 [monotypic] - chitons Subclass Polyplacophora Gray, 1821 [monotypic] see Class Polyplacophora Blainville, 1816 Order Lepidopleurida Thiele, 1910 1 Suborder Lepidopleurina Thiele, 1910 2 Suborder Chitonina Thiele, 1909 3 Suborder Acanthochitonina Bergenhayn, 1930