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 Suborder Lepidopleurina Thiele, 1910 Family Leptochitonidae Dall, 1889 1 Subfamily Leptochitoninae Dall, 1889 see Family Leptochitonidae Dall, 1889