Echinacea (animal)

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Echinacea Temporal range: Lower Jurassic–recent PreЄ Є O S D C P T J K Pg N

Echinus melo
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Superorder:	Echinacea
Orders
(See Text)

The Echinacea are a superorder of sea urchins. They are distinguished by the presence of a rigid test, with ten buccal plates around the mouth, and solid spines. Unlike some other sea urchins, they also possess gills. The group is a large one, with species found worldwide.

Taxonomy

According to World Register of Marine Species :

Order Arbacioida (Gregory, 1900)
Order Camarodonta (Jackson, 1912)
Order Stomopneustoida Kroh & Smith, 2010
Family Glyphopneustidae Smith & Wright, 1993 †

Arbacia lixula,
an Arbacioida
Echinus esculentus,
a Camarodonta
Glyptocidaris crenularis,
a Stomopneustoida

References

Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 980. ISBN 0-03-056747-5.

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