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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.

Echinoida
Temporal range: Late Cretaceous–Recent
Riccio Melone a Capo Caccia adventurediving.it.jpg
Echinus melo
Scientific classification
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Echinoida

Troschal, 1872
Families

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TaxonomyEdit

See alsoEdit

ReferencesEdit

  • 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.