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Hexactinellida |
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Hexactinellida [hek‚sak·tə′nel·ə·də] (invertebrate zoology) A class of the phylum Porifera which includes sponges with a skeleton made up basically of hexactinal siliceous spicules. 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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Two species of hexactinosidan sponges, Aphrocallistes vastus and Heterochone calyx, build a framework of densely packed sponge skeletons while several other species of hexactinellida and demosponges are accessory fauna. |
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