Petoskey Stones were formed by the fossilization of ancient coral, Hexagonaria. The coral lived in shallow waters. Petoskey Stones are found on many beaches of Lake Michigan and Lake Huron. Petoskey stones, only found in Michigan.
A YOUNG EARTH: Polystrate fossil tree - In a thousand locations including the Fossil Cliffs of Joggins, Nova Scotia, polystrate fossils such as trees span many strata disproving the claim that the layers were deposited slowly over millions of years.