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Masquerade Mask - Download From Over 28 Million High Quality Stock Photos, Images, Vectors. Sign up for FREE today. Image: 34573198

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Pterodactyl fossil. Have you ever really wondered in what way an extinct animal or bird is a proof of evolution? What about those who didn't go extinct and still roam the Earth today essentially unchanged?

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"In 1782: The Great Seal is adopted and the bald eagle becomes standard symbol of the United States. This copper dollar from 1794 carries the first depiction of an eagle on any U.S. national coin."

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