Order: Echinoida
Systematics :
Kingdom | Animals (Animalia) | ||||||
Phylum | Echinoderms (Echinodermata) | ||||||
Klasse | Sea urchins (Echinoidea) | ||||||
Order | Echinoida | ||||||
Family | Parechinidae | ||||||
Genus | Psammechinus | ||||||
Species | Grønnsjøpiggsvin (Psammechinus miliaris) | ||||||
Family | Strongylocentrotidae | ||||||
Genus | Strongylocentrotus | ||||||
Species | Drøbaksjøpiggsvin (Strongylocentrotus droebachiensis) |