| Family | Genus | Species |
|---|---|---|
| Acanthochitonidae | 9 | 43 |
| Callistoplacidae | 5 | 11 |
| Callochitonidae | 3 | 10 |
| Chaetopleuridae | 2 | 8 |
| Chitonidae | 12 | 69 |
| Choriplacidae | 1 | 1 |
| Cryptoplacidae | 1 | 6 |
| Hemiarthridae | 2 | 1 |
| Ischnochitonidae | 10 | 65 |
| Loricidae | 2 | 2 |
| Mopaliidae | 12 | 65 |
| Schizochitonidae | 1 | 1 |
| Schizoplacidae | 1 | 1 |
| Tonicellidae | 8 | 25 |