
Phylum: Echinoderms (Echinodermata)
Class: Sea urchins (Echinoidaea)
Family: Echinidae
Family: Diadematidae
Family: Echinothuriidae (Echinothuriidae)
Family: Echinometridae
Family: Parechinidae
Family: Toxopneustidae
Family: Strongylocentrotidae
