Echinoida

Echinoida Temporal range: Late Cretaceous–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Echinus melo
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Subclass:	Euechinoidea
Superorder:	Echinacea
Order:	Echinoida Troschal, 1872
Families
(See Text)

Echinoida is an order of sea urchins in the class Echinoidea. They are distinguished from other sea urchins by simultaneously possessing both an un-sculpted test and a feeding lantern with large plates fused across the top of each pyramid.

Taxonomy

Order Echinoida

• Family Echinidae
• Family Echinometridae
• Family Parasaleniidae
• Family Strongylocentrotidae

See also

• Colobocentrotus atratus - Shingle urchin
• Echinus acutus - White sea urchin
• Echinus esculentus - Common sea urchin
• Echinus tylodes
• Evechinus chloroticus - New Zealand sea urchin
• Heterocentrotus mammillatus - Red pencil urchin
• Heterocentrotus trigonarius - Slate pencil urchin
• Loxechinus albus - Chilean sea urchin

References

• Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 981. ISBN 0-03-056747-5. 
• National History Museum. "Echinoida". Retrieved 19 Dec 2009.