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Rock Fossil with circles

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Fossils38 of 86Orthoceras FossilsCoprolite Specimen and Viewing Figurines
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    Posted 7 years ago

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    Kenny-Rodg…
    (2 items)

    This is some kind of Rock Fossil with circular lines inside, how they formed like this is a mystery to me. Any suggestions?

    Unsolved Mystery

    Help us close this case. Add your knowledge below.

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    Comments

    1. blunderbuss2 blunderbuss2, 7 years ago
      Petrified tree.
    2. fortapache fortapache, 7 years ago
      I think bb2 solved the mystery.
    3. BadPenny BadPenny, 7 years ago
      Yes, growth rings from a tree, I agree. Very nice specimen.
    4. Kenny-Rodgers53, 7 years ago
      I found it on the sea shore, some people told me it maybe cannonball rock as it is only 2 inches in diameter.

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