Family
Cyclopygidae Raymond, 1925
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Asaphida |
| Superfamily | Cyclopygoidea |
| Family | Cyclopygidae |
| Nileidae |
See also
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Asaphida |
| Superfamily | Cyclopygoidea |
| Family | Cyclopygidae |
| Nileidae |