Family
Acanthoessidae Hay, 1902
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Organism group | Gnathostomata |
| Class | Chondrichthyes |
| Order | Acanthodei |
| Family | Acanthoessidae |
| Genus | Machaeracanthus |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Organism group | Gnathostomata |
| Class | Chondrichthyes |
| Order | Acanthodei |
| Family | Acanthoessidae |
| Genus | Machaeracanthus |