Life (root) » Animalia (Animals) » Echinodermata (Echinoderms) » Echinozoa (sea urchins and sea cucumbers) » Echinoidea (Sea Urchins, Sand Dollars, and Heart Urchins) » Euechinoidea (sea urchins) » Carinacea » Echinacea » Camarodonta » Echinidea » Odontophora » Echinometridae » Echinometra (Rock-boring Urchins) » Echinometra mathaei (Indo-Pacific Rock-boring Urchin)