Genus
Machaeracanthus Newberry, 1857
Classification
| Organism group | Biota |
| Domain | Eukaryota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Infraphylum | Gnathostomata |
| Class | Chondrichthyes |
| Subclass | Acanthodii |
| Family | Machaeracanthidae |
| Genus | Machaeracanthus |
| Species | peracutus |