the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Arthropoda (phylum)
Crustacea (subphylum)
Cirripedia (subclass)
Thoracica (order)
Balanidae (family)
Balanus (genus)
[hide inferior taxa]
Balanus albicostatus (species)
Balanus amphitrite (species)
Balanus improvisus (species)
Balanus nubilis (species)