| Family | Genus | Species |
|---|---|---|
| Aphrocallistidae | 2 | 5 |
| Aulocalycidae | 3 | 6 |
| Auloplacidae | 1 | 1 |
| Caulophacidae | 0 | 0 |
| Craticulariidae | 1 | 1 |
| Dactylocalycidae | 2 | 4 |
| Euplectellidae | 21 | 72 |
| Euretidae | 9 | 15 |
| Farreidae | 4 | 17 |
| Hyalonematidae | 3 | 21 |
| Leucopsacidae | 3 | 6 |
| Monorhaphididae | 1 | 1 |
| Pheronematidae | 7 | 25 |
| Rossellidae | 19 | 74 |
| Tretodictyidae | 4 | 12 |
| Uncinateridae | 1 | 4 |