Superfamily
Stenoscismatoidea Oehlert, 1997
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Rhynchonellida |
| Superfamily | Ancistrorhynchoidea |
| Camarotoechioidea | |
| Norelloidea | |
| Pugnacoidea | |
| Rhynchotrematoidea | |
| Stenoscismatoidea | |
| Family | Stenoscismatidae |
| Superfamily | Uncinuloidea |
| Family | Glossinotoechiidae |
| Ladogiidae | |
| Rhynchonellidae | |
| Septalariidae | |
| Tetrarhynchiidae |