Name:
Crystalline Stromatolite
Age: Ordovician
Formation: Oneota Formation
Location: Central Wisconsin
Size: Stromatolite is 4.2 inches tall
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This is a beautiful example of a colorful crystalline stromatolite from the Lower Ordovician of Wisconsin. Authorities believe that stromatolites were formed by masses of green or blue-green algae, or ''cyanobacteria''. This large stromatolite specimen is believed to be 495 million years old! This colorful stromatolite has re-crystallized into a stunning display of druzy quartz. The natural, maroon-red coloration of this stromatolite is simply beautiful. This is a wonderful example of the crystalline structure of a stromatolite.
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