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Palaechinoida |
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Palaechinoida [¦pāl·ē·kī′nȯid·ē·ə]
(paleontology) An extinct order of echinoderms in the subclass Perischoechinoidea with a rigid test in which the ambulacra bevel over the adjoining interambulacra. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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