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Physics 17 Online
OpenStudy (anonymous):

What is the Petoskey Stone and where was it found?

OpenStudy (anonymous):

@dan815 @nono266

OpenStudy (anonymous):

A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral. Petoskey stones are found in the Gravel Point Formation of the Traverse Group. They are fragments of a coral reef that was originally deposited during the Devonian period.

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