Iconic Gunflint Stromatolites from Ontario


Stratifera Form Genus

Hand Polished

Geological Time: Paleoproterozoic, ~ 1.9 Billion Years Old

Size: Stromatolite fossil is 135 mm by 200 mm (maximum)

Fossil Site: Gunflint Formation, near Kakabeka Falls Ontario, Canada (outside of the nature preserve)

Code: DS17019

Price: Sold

Iconic Gunflint Stromatolites from OntarioDescription: This stromatolite is from the Gunflint Formation, a Paleoproterozoic chemical-clastic sedimentary assemblage outcropping to the immediate northwest of Lake Superior that became famous in 1954 for containing the oldest fossil assemblage known at that time. Older microfossils have since been discovered, but the Gunflint prokaryotes remain one of the most diverse Precambrian fossil communities. In the March 7, 2002 issue of Nature (Volume 406), J.W. Schopf, famous for his role in the discovery of Domain of Life Archaea, reported discovery of cellular remains of prokaryotic cells in the Gunflint stromatolites (combining optically discernible morphology with analyses of chemical composition using laser-Raman spectroscopic imagery). His results remain controversial, however. At about the same time, the age was measured at 1.9 billion years. This example comes from a gated road cut at a power plant near Kakabeka Falls. Permission was granted to a member of the Lake Superior Geological Group by the falls manager, and an associate was given a few specimens to cut and polished. This is the LAST I have available.

Fossils for Sale

click stromatolites pictures to enlarge

Iconic Gunflint Stromatolites from Ontario

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