Atelostomata

== Translingual == === Etymology === From Ancient Greek ἀτελής (atelḗs, “imperfect, incomplete”) + στόμα (stóma, “mouth”). === Proper noun === Atelostomata A taxonomic superorder within the class Echinoidea – echinoderms having a rigid, exocyclic shell and no jaw. ==== Hypernyms ==== (superorder): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Deuterostomia – infrakingdom; Deuterostomia – superphylum; Echinodermata – phylum; Echinozoa – subphylum; Echinoidea – class; Euechinoidea - subclass ==== Hyponyms ==== (superorder): Cassiduloida, Spatangoida (heart urchins) (orders) === References === William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “Atelostomata”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC. (supplement) Atelostomata on Wikipedia.Wikipedia Atelostomata on Wikispecies.Wikispecies Category:Atelostomata on Wikimedia Commons.Wikimedia Commons