Subfamily
Mutationellinae Cloud, 1942
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Terebratulida |
| Suborder | Terebratulidina |
| Superfamily | Stringocepaloidea |
| Family | Meganterididae |
| Subfamily | Meganteridinae |
| Mutationellinae | |
| Genus | Mutationella |