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A modern snail is shown crawling across maple tree leaves in North Carolina. Photo courtesy of T. Scott, Florida Geological Survey.

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Modern beach shell lag, or accumulation of shells, from Florida. Shells in this deposit composed mainly of snail (gastropod) and clam (bivalve) mollusks. Photo courtesy of T. Scott, Florida Geological Survey.

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Live conch shell (Strombus raninus) from Florida. Arrows point to eye stalks of the gastropod protruding from within its shell. Photo courtesy of T. Scott, Florida Geological Survey.

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Dense accumulation of fossil mollusks, mainly clams and snails. Pliocene age Pinecrest Beds, Quality Aggregates Pit, Florida. Note trowel for scale. Photo courtesy of T. Scott, Florida Geological Survey.

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Gloved hand holding a Tulip snail (Fasciolaria) that is in the process of eating a pearl oyster (Pinctada), Florida. Photo courtesy of T. Scott, Florida Geological Survey.