![File:Guelph Formation stromatolite.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Guelph_Formation_stromatolite.jpg/799px-Guelph_Formation_stromatolite.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:41, 26 November 2015 | ![]() | 3,333 × 2,500 (3.65 MB) | The Cosmonaut | == {{int:filedesc}} == {{Information |Description= {{en|A stromatolite, preserved in dolostone of the Guelph Formation. Diameter is ~0.75 m.}} |Source={{own}} |Date= 2015-11-26 |Author= Óðinn |Permissi... |
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