the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Echinodermata (phylum)
Asterozoa (class)
Asteroidea (infraclass)
Forcipulata (order)
Asteriidae (family)
[hide inferior taxa]
Aphelasterias japonica (species)
Asterias (genus)
Distolasterias nipon (species)
Marthasterias glacialis (species)
Pisaster (genus)
Pycnopodia helianthoides (species)