the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Echinodermata (phylum)
Echinozoa (superclass)
Echinoidea (class)
Euechinoidea (subclass)
Echinoida (order)
Strongylocentrotidae (family)
Strongylocentrotus (genus)
Strongylocentrotus purpuratus (species)
purple urchin (primary common name)
[hide inferior taxa]