Tag: Petoskey stones

Petoskey stones, stones, rocks

Michigan’s State Rock is an Ancient Sea Creature

More than 350 million years ago, warm, shallow seas covered many parts of North America, including much of the Midwest. During this time period, known as the Devonian era, these shallow waters were teaming with salt water marine life. Fish, mussels, crustaceans, and micro-organisms flourished in the region. In addition to the other sea animals, …

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