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Key terms: sea urchin spines period echinoids fossils echinoidea cm stars raw served www feeding eaten roe species lantern humans genes sauce spiny sand eggs sharp teeth shell coast tube feet symmetry sea star brittle biology anatomy gallery chilean visible evolved triassic adhesive jurassic delicacy survived echinoderms aristotle paleozoic sea cucumber specimens upper part holothuroidea cretaceous period irregular echinoids Search external links cited by footnotes on Wikipedia page Sea urchin: |
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