| Family | Genus | Species |
|---|---|---|
| Actinommidae | 11 | 19 |
| Artostrobiidae | 2 | 4 |
| Cannobotryidae | 1 | 1 |
| Carpocaniidae | 1 | 3 |
| Coccodiscidae | 2 | 5 |
| Collophidiidae | 2 | 9 |
| Collosphaeridae | 5 | 14 |
| Collozoidae | 1 | 5 |
| Ethmosphaeridae | 1 | 2 |
| Hexalonchidae | 1 | 1 |
| Larnacillidae | 1 | 2 |
| Litheliidae | 2 | 3 |
| Orosphaeridae | 2 | 2 |
| Plagiacanthidae | 8 | 15 |
| Plagoniidae | 1 | 2 |
| Pterocorythidae | 4 | 13 |
| Pyloniidae | 5 | 11 |
| Rhizosphaeridae | 2 | 4 |
| Sphaerozoidae | 5 | 25 |
| Spongodiscidae | 10 | 26 |
| Thalassicollidae | 0 | 0 |
| Thalassophysidae | 0 | 0 |
| Theoperidae | 7 | 21 |
| Trissocyclidae | 4 | 6 |