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Bothriocidaroida |
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Bothriocidaroida [‚bä·thrē·ō‚sik·ə′rȯid·ē·ə]
(paleontology) An order of extinct echinoderms in the subclass Perischoechinoidea in which the ambulacra consist of two columns of plates, the interambulacra of one column, and the madreporite is placed radially. 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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