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  • Mike Edwards posted an image in the group Group logo of What is it?What is it? from the myFOSSIL app 1 year, 12 months ago

    1 year, 12 months ago
    1 year, 12 months ago

    What type of rock is this please? Found outside Yellowstone on the east side of Gardiner MT. Has fossils in this very bright white rock. Thank you!!