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Stromatolite Age: Precambrian Formation: Bad River Dolomite Location: Bayfield County, Wisconsin Size: Slab is 4.1'' X 6.5'' This specimen is not for sale Click here for similar specimens that are for sale
This is an attractive slab of stromatolite from the Precambrian of Wisconsin. Authorities believe that stromatolites were formed by masses of green or blue-green algae. This thick slab has been highly polished on one side. The unique coloration of this stromatolite makes for a striking display. This is a very pretty slice of an extremely old stromatolite.