LepidopleuridaLepidopleurida is an order of molluscs belonging to the class Polyplacophora.The order Lepidopleurida is the oldest group of polyplacophoran molluscs Families: Abyssochitonidae †Acutichitonidae Afossochitonidae †Camptochitonidae †Cymatochitonidae †Glyptochitonidae †Gryphochitonidae Hanleyidae †Heterochitonidae †Lekiskochitonidae Leptochitonidae †Llandeilochitonidae †Mesochitonidae Nierstraszellidae †Permochitonidae Protochitonidae