| Family | Genus | Species |
|---|---|---|
| Cancellothyrididae | 3 | 14 |
| Chlidonophoridae | 1 | 1 |
| Dallinidae | 3 | 5 |
| Dyscoliidae | 2 | 3 |
| Ecnomiosidae | 1 | 2 |
| Gryphidae | 1 | 2 |
| Gwyniidae | 1 | 1 |
| Kraussinidae | 4 | 6 |
| Laqueidae | 8 | 15 |
| Megathyrididae | 2 | 2 |
| Platidiidae | 1 | 4 |
| Terebratellidae | 7 | 14 |
| Terebratulidae | 4 | 11 |
| Tichosidae | 1 | 5 |
| Zeilleriidae | 1 | 3 |