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Science Keywords > EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS

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ECHINODERMS  

DÉFINITION

  • The phylum Echinoderms is a wholly marine group whose members include the familiar starfish and sea urchins often found on the shore. Some of their particular features are their five-sided adult symmetry, their endoskeleton which consists of many small crystals of calcium carbonate and tube feet, which are outward manifestations of their water vascular system.

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https://gcmd.earthdata.nasa.gov/kms/concept/70892c25-4206-4673-9504-2876927d19a3

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