the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Cnidaria (phylum)
Hydrozoa (class)
Hydroida (order)
Leptomedusae (suborder)
Campanulariidae (family)
Obelia (genus)
[hide inferior taxa]
Obelia geniculata (species)
Obelia longissima (species)