Superfamily
Stringocepaloidea King, 1850
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Terebratulida |
| Suborder | Terebratulidina |
| Superfamily | Cancellothyridoidea |
| Cryptonelloidea | |
| Cyscolioidea | |
| Dielasmatoidea | |
| Loboidothyridoidea | |
| Stringocepaloidea | |
| Family | Meganterididae |
| Stringocephalidae | |
| Superfamily | Terebatuloidea |
| Zeillerioidea |