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Fossilized shark teeth are up to 300 million years old. While teeth from living sharks are white, fossil teeth may vary in color according to the mineral content of the soil in which they were preserved.
Teeth come from species which are extinct as well as those whose decedents inhabit today's seas. A shark may produce 24,000 teeth in it's lifetime. These prehistoric teeth come from ancient seabeds, now exposed by currents and other conditions in the Gulf of Mexico on the Florida coast of the USA.
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