Ischnochitonida
Ischnochitonida is an order of molluscs belonging to the class Polyplacophora. Families: Callistoplacidae Pilsbry, 1893 Callochitonidae Plate, 1901 Chaetopleuridae Plate, 1899 Chitonidae Rafinesque, 1815 †Gryphochitonidae Ischnochitonidae Dall, 1889 Loricidae Iredale & Hull, 1923 Mopaliidae Dall, 1889 †Ochmazochitonidae Schizochitonidae Dall, 1889 Schizoplacidae Bergenhayn, 1955 Subterenochitonidae Tonicellidae Simroth, 1894 References Chitons Mollusc orders