| Family | Genus | Species |
|---|---|---|
| Acanthochitonidae | 7 | 42 |
| Callistoplacidae | 2 | 11 |
| Callochitonidae | 1 | 10 |
| Chaetopleuridae | 1 | 8 |
| Chitonidae | 10 | 68 |
| Choriplacidae | 1 | 1 |
| Cryptoplacidae | 1 | 6 |
| Hemiarthridae | 1 | 1 |
| Ischnochitonidae | 7 | 65 |
| Loricidae | 2 | 2 |
| Mopaliidae | 11 | 64 |
| Schizochitonidae | 1 | 1 |
| Schizoplacidae | 1 | 1 |
| Tonicellidae | 4 | 25 |