From Infogalactic: the planetary knowledge core
Jump to: navigation, search
Temporal range: Early Jurassic–Recent
Diadema setosum
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Subclass: Euechinoidea
Superorder: Diadematacia
Order: Diadematoida
Duncan, 1889

(See Text)

Diadematoida is an order of sea urchins. They are distinguished from other sea urchins by the fact that their spines are hollow, or at best have an open mesh at the core, and by the presence of ten buccal plates around the mouth. Their test can be either solid or flexible.


According to ITIS :

According to World Register of Marine Species :


  • Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 980. ISBN 0-03-056747-5.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  • National History Museum. "Diadematoida". Retrieved 20 Dec 2009.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>