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Perischoechinoidea |
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Perischoechinoidea [pə¦ris·kō‚ek·ə′nȯid·ē·ə] (invertebrate zoology) A subclass of principally extinct echinoderms belonging to the Echinoidea and lacking stability in the number of columns of plates that make up the ambulacra and interambulacra. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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