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12y ago
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11y ago

"Echinodermata" literally means "spiny skin". Echinoderms include sea stars, sea urchins, sand dollars, sea cucumbers, and brittle stars.

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11y ago

yes and no.mostly yes.i would have to say around 45-50% no.some scientists would revise that figure to be more around 55%,but this seems grossly exaggerated.

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Q: What animals belong to echinoderms?
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