Subfamily
Mucrospiriferinae Boucot, 1959
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Spiriferida |
| Suborder | Delthyridina |
| Superfamily | Delthyrioidea |
| Family | Mucrospiriferidae |
| Subfamily | Mucrospiriferinae |
| Genus | Mucrospirifer |