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Sign in to savehard shell of some spherical marine animals, notably sea urchins and microorganisms such as testate foraminiferans, radiolarians, and testate amoebae
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- Echinoidea tests
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Foraminifera
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bone
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Testudines
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International Standard Book Number
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Adriatic Sea
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Mollusca
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skeleton
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seed
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skull
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protist
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isotope
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fossil
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digital object identifier
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International Standard Serial Number
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Echinoidea
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cellulose
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Cephalopod
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crystallography
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calcium carbonate
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Phanerozoic
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