Nautilus shell cross-section

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Nautilus shell spiral

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Nautilus shell cross-section

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Nautilus shell spiral

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close-up of a snail shell

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Nautilus shell spiral

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Nautilus shell on brown surface

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Nautilus shell on textured surface

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Nautilus shell with brown stripes

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orange spiral seashell

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white spiral seashell

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close-up of a snail shell

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