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