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    <skos:prefLabel xml:lang="en">ECHINODERMS</skos:prefLabel>
    <gcmd:reference gcmd:text="Burn, David M. Animal World.  1980.  Octopus Books Ltd.  London." xml:lang="en"/>
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    <skos:definition xml:lang="en">The phylum Echinoderms is a wholly marine group whose members includethe familiar starfish and sea urchins often found on the shore. Some oftheir particular features are their five-sided adult symmetry, theirendoskeleton which consists of many small crystals of calcium carbonateand tube feet, which are outward manifestations of their water vascularsystem.</skos:definition>
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