spatangus
Spa*tan"gus, n. Etym: [NL., fr. L. spatangius a kind of sea urchin, Gr. (Zoöl.) Defn: A genus of heart-shaped sea urchins belonging to the Spatangoidea.
Spa*tan"gus, n. Etym: [NL., fr. L. spatangius a kind of sea urchin, Gr. (Zoöl.) Defn: A genus of heart-shaped sea urchins belonging to the Spatangoidea.