Echinoidea
From BiblePortal Wikipedia
Revision as of 02:56, 13 October 2021 by BiblePortalWiki (talk | contribs)
Echinoidea [1]
(n. pl.) The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid.
