Age: Precambrian
(2.4 to 2.6 billion years old) Size
(25.4 mm = 1 inch): 345 by 155 maximum (13 1/2 by 6 inches) - 9 mm thick
Fossil
Site: Bad River Dolomite, Bayfield County, Wisconsin
Code:
DS13
Price:
$125.00 - sold
While
polished stromatolite is often very pretty, seldom are such traces
of rich green color manifest. This unique fossil is also very
ancient, dating back to the boundary of the Archean and the Proterozoic
in Precambrian time. This was a time on Earth when environments
were still hostile to life as we know it. It was a time when bacteria
reined, and those Prokaryotic bacteria (no cell nucleus) that
produced their energy through photosynthesis were ubiquitous and
were oxygenating the Earth's atmosphere. This was also the peak
of stromatolite formations on Earth. This stromatolite is the
oldest microfossil of Wisconsin and occures below banded iron
formations.
Such
huge pieces are hard to get, and difficult to cut and polish. |
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