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Updated March 2026
795+ Fossil Entries
coralDevonianUpdated March 2026

Wisconsin Petoskey Stone

Devonian

Wisconsin Petoskey Stone fossil specimen

About Wisconsin Petoskey Stone

The Wisconsin Petoskey Stone is a coral fossil dating to the Devonian. Petoskey Stone is a realistic Wisconsin fossil profile built around weathered colonial coral Hexagonaria polished by Great Lakes waves. In this state, success usually comes from learning glacial till, Devonian limestones, and Lake Superior gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

“According to TroveRadar, Wisconsin Petoskey Stone fossils from the Devonian are found across Wisconsin. TroveRadar's field database catalogs 795+ fossil entries for identification and collection guidance.

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Identification Tips

  • six-sided corallite pattern
  • rounded beach-worn shape
  • gray fossil coral texture
  • Check glacial till, Devonian limestones, and Lake Superior gravels

Where Found

Wisconsin

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Explore More

How do I identify a Wisconsin Petoskey Stone fossil?
Wisconsin Petoskey Stone fossils from the Devonian can be identified by: six-sided corallite pattern. rounded beach-worn shape. gray fossil coral texture. Check glacial till, Devonian limestones, and Lake Superior gravels. They are most commonly found in Wisconsin.
Where are Wisconsin Petoskey Stone fossils found?
Wisconsin Petoskey Stone fossils are found in Wisconsin. Look in sedimentary rock formations dating to the Devonian era. The best collecting is typically found in exposed roadcuts, creek banks, and quarry sites.
How old are Wisconsin Petoskey Stone fossils?
Wisconsin Petoskey Stone fossils date to the Devonian. They are classified as coral fossils in TroveRadar's database, which catalogs 795+ fossil entries across North America.
Is it legal to collect Wisconsin Petoskey Stone fossils?
Fossil collecting laws vary by state and land ownership. Common invertebrate fossils are generally collectible on some public lands for personal use, but vertebrate fossils and collecting on protected lands may require permits. Always check local regulations before collecting. Use TroveRadar's State Guides for specific rules.