Genus
Cyrtina Davidson, 1858
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Spiriferinida |
| Superfamily | Cyrtinoidea |
| Family | Cyrtinidae |
| Genus | Cyrtina |
| Species | hamiltonensis |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Spiriferinida |
| Superfamily | Cyrtinoidea |
| Family | Cyrtinidae |
| Genus | Cyrtina |
| Species | hamiltonensis |