Locality : Chencha Formation, Torgo, Yakutia, Russia
Period : Proterozoic, 580 m.d.a.
Dimension : 15,5 x 10 x 0,7 cm
Weight : 194 gram
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This is an exceptional example the Earth's oldest fossil, stromatolite, from an unusual South American Cretaceous formation. This slab of stromatolite 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.