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Fossil Age Minerals

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Echinoderm Fossil Collection

Echinoderms are Marine invertebrates which include starfishes, sea urchins, brittlestars, crinoids, and sea cucumbers. They have fivefold radial symmetry, a calcareous skeleton, and tube feet operated by fluid pressure. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone.  


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