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Fossil from Fossil ID system

Georockshop
Paraloid B72 100g
3.75 EUR



  MI Petoskey
  USA

Added:
september 2006
Last Modified:
september 2006

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Location description

At the shores of Lake Michigan near Petosky in the north of the Michigan state , U.S., you can find the so called "Petoskey Stones". The fossils are from the "Gravel Point Formation, Traverse Group" from the middle Devonian period. The “Petoskey Stone” is the official state rock of Michigan.

The polished corals are found between the gravel on the shores of the lake. Look for the grey-white rounded limestones. The stones originally come from the underlying limestone layers, and were rounded and transported by the glaciers in the iceages. The best time to look for fossils is in spring, after the melting of the ice. At some places tourists have collected most of the fossils, and few are left to find.


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Directions

Petoskey is located about 350 km north of Detroit at the shores of Lake Michigan. The “Petoskey Stones” are found at the shores of Lake Michigan and Lake Huron, between Traverse City in the west to Alpena in the east. The best spot is north of Petoskey, in direction of Mackinac City. Also in the inland you can find the corals, but these are less beautiful, because they are not polished by the water.

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Finds

The so called "Petoskey Stones" are tabulate hexacorals of the species Hexagonaria percarinata.

There are 1 photographs of fossils from this location in our Fossil ID System.
Go to the MI Petoskey Species List to identify your own finds!

Literature recommended by members

No literature was added for this location.

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Other locations in the area

Fossil location: Alpena (Thunder Bay quarry)
Fossil location: Charlevoix
Society: Grand Traverse Area Rock and Mineral Club: History Center

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