the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Echinodermata (phylum)
Echinozoa (superclass)
Echinoidea (class)
Euechinoidea (subclass)
Echinoida (order)
Echinidae (family)
[hide inferior taxa]
Echinus esculentus (species)
Paracentrotus lividus (species)
Parechinus angulosus (species)
Psammechinus miliaris (species)
Psammechinus sp. (species)
Pseudocentrotus depressus (species)