File:Petoskey stone unpolished with cm scale.jpg
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![File:Petoskey stone unpolished with cm scale.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/8/86/Petoskey_stone_unpolished_with_cm_scale.jpg/750px-Petoskey_stone_unpolished_with_cm_scale.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:55, 18 July 2010 | ![]() | 1,280 × 1,024 (914 KB) | Dfred | {{Information |Description={{en|1=Unpolished, fossilized ''Hexagonaria percarinata'', commonly known as en:Petoskey stone. Sample found in the Sturgeon River, en:Cheboygan County, Michigan. Shown with cm scale. }} |Sourc |
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