Lower Proterozoic Stromatolites from Bolivia
Time: Precambrian - Paleoproterozoic (2.2 to 2.4 Billion Years Old)
mm by 170 mm (maximum)
Eastern Andes South of Cochabamba, District of Cochabamba, Bolivia, South
This is an exceptional example the Earth's oldest fossil, stromatolite,
from an unusual South American Precambrian formation. This slab
of stromatolites was cut and polished perpendicularly to the individual
colonial layers and thus exhibits multiple colored growth rings.
The stromatolite has been polished to a mirror finish on one side,
vividly rendering the inherent beauty of stromatolite and making
apparent the biogenic process in its formation. The age is estimated
to be 2.2 to 2.4 BILLION years old, near the Lower Paleoproterozoic,
from a time in the Precambrian when stromatolite is believed to
have been both ubiquitous and abundant on earth.
remarkable specimen is appropriate for display, teaching or research,
representing primitive prokaryotic life responsible for forming
the atmosphere that we breathe today. Stromatolites have persisted
to the modern day in such places as Shark Bay, Australia where they
continue their billions of years old lifestyle.
Across Geologic Time