Genus
Pugnax Hall et Clarke, 1893
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Rhynchonellida |
| Superfamily | Pugnacoidea |
| Family | Pugnacidae |
| Genus | Pugnax |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Rhynchonellida |
| Superfamily | Pugnacoidea |
| Family | Pugnacidae |
| Genus | Pugnax |