Chitonida
Chitonida is an order of chitons. The order was erected to class chitons with elaborate hull outgrowths on their eggs.
Taxonomy
- Acanthochitonidae Henry [Augustus Pilsbry|Pilsbry], 1893
- Callistoplacidae Pilsbry, 1893
- Callochitonidae Plate, 1901
- Chaetopleuridae Plate, 1899
- Chitonidae Constantine [Samuel Rafinesque|Rafinesque], 1815
- Choriplacidae Ashby, 1928
- Cryptoplacidae Adams (zoologist)|Adams] & Adams, 1858
- Hemiarthridae Sirenko, 1997
- Ischnochitonidae William [Healey Dall|Dall], 1889
- Mopaliidae Dall, 1889
- †Ochmazochitonidae Hoare et Smith, 1984
- Schizochitonidae Dall, 1889
- Schizoplacidae Bergenhayn, 1955
- Tonicellidae Simroth, 1894