Genus
Crassitestella Baarli, 1995
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Strophomenata |
| Order | Strophomenida |
| Superfamily | Strophomenoidea |
| Family | Rafinesquinidae |
| Subfamily | Rafinesquininae |
| Genus | Crassitestella |
| Hedstroemina | |
| Kjaerina | |
| Kjerulfina | |
| Pirgumena | |
| Rafinesquina | |
| Rakverina |