the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Cnidaria (phylum)
Hydrozoa (class)
Hydroida (order)
Anthomedusae (suborder)
Hydractiniidae (family)
[hide inferior taxa]
Hydractinia echinata (species)
Hydractinia symbiolongicarpus (species)
Podocoryne carnea (species)