Minnesota Petoskey Stone
Devonian
About Minnesota Petoskey Stone
The Minnesota Petoskey Stone is a coral fossil dating to the Devonian. Petoskey Stone is a realistic Minnesota 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, Minnesota Petoskey Stone fossils from the Devonian are found across Minnesota. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Turn Minnesota Petoskey Stone into a month, law, metro, and ground plan.
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Minnesota state guide
Fossil collecting rules in Minnesota vary by land status and fossil type. Common invertebrate fossils may be collectible on some public lands, but vertebrate fossils, protected park units, tribal lands, and cultural sites require a much higher level of care and often a permit. This is especially relevant in Ordovician fossils, agates, and glacial gravels.
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Location: Chippewa National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Superior National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Itasca State Park
State Park • Photo opportunities, Exposed shoreline stones
Location: Whitewater State Park
State Park • Photo opportunities, Exposed shoreline stones
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
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Wisconsin Horn Coral
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