Phylum Mollusca Linnaeus, 1758 - molluscs Subphylum Aculifera Hatschek, 1891 Class Polyplacophora Blainville, 1816 - chitons Order Neoloricata Bergenhayn, 1955 see Subclass Neoloricata Bergenhayn, 1955 Suborder Acanthochitonina Bergenhayn, 1930 1 Family Acanthochitonidae Pilsbry, 1893 2 Family Cryptoplacidae H. Adams & A. Adams, 1858