Subfamily
Taffinnae Schuchert et Cooper, 1931
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Strophomenata |
| Order | Strophomenida |
| Superfamily | Plectambonitoidea |
| Family | Taffiidae |
| Subfamily | Ahtiellinae |
| Taffinnae | |
| Genus | Ukoa |