Species
Hydrocephalus hicksii (Salter, 1866)
Synonyymit
1958 Hydrocephalus hicksii (Salter, 1866) — Snajdr
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Redlichiida |
| Suborder | Redlichiina |
| Superfamily | Paradoxidoidea |
| Family | Paradoxididae |
| Genus | Hydrocephalus |
| Species | hicksii |
| spinulosus | |
| vikensis |