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  • Sadie Mills posted an image in the group Group logo of Paleo PicsPaleo Pics from the myFOSSIL app 11 months, 3 weeks ago

    11 months, 3 weeks ago
    11 months, 3 weeks ago

    This Petoskey stone is fossilized coral from the genus hexagonaria. The “hex” part comes from the 6-sided chambers that make up the colony. It is around 350 million years old, making it my oldest fossil! #fossil