the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Arthropoda (phylum)
Crustacea (subphylum)
Cirripedia (subclass)
Thoracica (order)
Balanidae (family)
Megabalanus (genus)
[hide inferior taxa]
Megabalanus rosa (species)
Megabalanus sp. (species)
Megabalanus volcano (species)