These lowly animals belong to that group of the star-fish class (Echinodermata), the species of which possess generally spheroidal bodies, built up of multitudinous calcareous plates, and constitute the order Echinoidea.    From Wordnik.com.  [On the Genesis of Species] Reference

Echinoidea, which has the literal meaning spiny skin.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

The mouth of the Echinoidea, often referred to as Aristotle's Lantern because of the way he first described it, is located at the central most part of the animal's circular, spiny body.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Echinoidea.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Echinoidea, 44.    From Wordnik.com.  [On the Genesis of Species] Reference

Ophiuroidea, brittle stars, Echinoidea, sea urchins, sand dollars, and Holothuroidea, sea cucumbers.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference