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Sadie Mills posted an image in the group
Paleo Pics from the myFOSSIL app 5 years, 1 month ago 5 years, 1 month ago5 years, 1 month agoThis 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
The stone that started it all for me as a little girl growing up in Michigan
love this stone, I used to live in Michigan and went and picked them up all the time. It’s really touristy now though if you don’t get there early in the season.