Atelostomata

Translingual

Spatangus purpureus

Etymology

From Ancient Greek ἀτελής (atelḗs, “imperfect, incomplete”) + στόμα (stóma, “mouth”).

Proper noun

Atelostomata

1. 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

• “Atelostomata”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC. (supplement)
• Atelostomata on Wikipedia.Wikipedia
• Atelostomata on Wikispecies.Wikispecies
• Category:Atelostomata on Wikimedia Commons.Wikimedia Commons