| Family | Genus | Species |
|---|---|---|
| Ascidiidae | 4 | 43 |
| Cionidae | 2 | 16 |
| Clavelinidae | 2 | 30 |
| Corellidae | 3 | 13 |
| Diazonidae | 2 | 6 |
| Didemnidae | 7 | 164 |
| Euherdmaniidae | 1 | 2 |
| Hexacrobylidae | 1 | 1 |
| Molgulidae | 4 | 32 |
| Octacnemidae | 7 | 15 |
| Perophoridae | 2 | 20 |
| Polycitoridae | 7 | 61 |
| Polyclinidae | 4 | 84 |
| Pseudodistomidae | 1 | 5 |
| Pycnoclavellidae | 1 | 15 |
| Pyuridae | 7 | 83 |
| Styelidae | 40 | 313 |
| Synoicidae | 1 | 1 |