Diadematoida

== Translingual == === Etymology === Diadema +‎ -oida === Proper noun === Diadematoida A taxonomic order within the class Echinoidea – hollow-spined sea urchins. ==== Hypernyms ==== (order): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Deuterostomia – superphylum; Echinodermata – phylum; Echinozoa – subphylum; Echinoidea – class; Euechinoidea - subclass; Acroechinoidea - infraclass ==== Hyponyms ==== (order): Diadematidae - family ==== Coordinate terms ==== (order): Aspidodiadematoida, Micropygoida, Pedinoida - orders === References === Diadematoida on Wikipedia.Wikipedia Diadematoida on Wikispecies.Wikispecies Category:Diadematoida on Wikimedia Commons.Wikimedia Commons Diadematoida at World Register of Marine Species