| Acanthochitona, Notoplax, Acanthochitona zelandica, Craspedochiton, Cryptoconchus|
Acanthochitonidae is a family of chitons.
These small to large chitons are characterised by a broad girdle with erect tufts of up to ten large bristles. The coarsely granular valves of the shell are partially overlapped by the girdle. This girdle is all covered by coarse spines. The articulating flange, or articulamentum, is well developed. The margin of the cephalic plate has about five slits. The lateral insertion plates all have a single notch.
According to the World Register of Marine Species (WoRMS) the following genera are included in this family Acanthochitona Gray, 1821
Bassethullia Pilsbry, 1928
Choneplax Carpenter MS, Dall, 1882
Craspedochiton Shuttleworth, 1853
Craspedoplax Iredale & Hull, 1925
Cryptoconchus de Blainville MS, Burrow, 1815
Leptoplax Carpenter MS, Dall, 1882
Notoplax H. Adams, 1861
Pseudotonicia Ashby, 1928