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EXTINCTIONS CHOICE - Large Green Stromatolite
STROMATOLITE
Stock Number XISTR124
EXTINCTIONS Choice

Name:   Collenia sp. (Stromatolite)
Age:  Precambrian
Formation:  Bad River Dolomite
Location:  Bayfield County, Wisconsin
Size:  Slab is 6.6" X 7.0"
This specimen is not for sale
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This is a very large example of a colorful Collenia stromatolite from the Precambrian of Wisconsin. Authorities believe that stromatolites were formed by masses of green or blue-green algae, or ''cyanobacteria''. This stromatolite specimen is believed to be 2.2 billion years old! This large slab has been highly polished on one side for optimal display. The unique greenish-yellow coloration of this stromatolite makes for a striking specimen. This is a beautiful slice of an extremely old piece of the Earth's history.