6.7" Polished Precambrian Stromatolite Slab - Siberia

This is a 6.7" wide slab of cut and polished, columnar stromatolite from the Torgo Formation in Siberia. It is Mesoproterozoic Mesoproterozoic (Ectasian Period) in age, or approximately 1.2 billion years old.

Stromatolites are the layered trace fossils of microbial life, primarily cyanobacteria. Some of them date back an astounding 3.4 billion years, making them the oldest record of life on planet Earth. Stromatolites and Microbialites were typically formed in shallow water by the growth of layer upon layer of cyanobacteria, a single-celled, photosynthesizing microbe. These layers often form very beautiful, and colorful banded structures in the rock.

These oxygen producing cyanobacteria were so simple they lacked DNA packaging nucleus, but were responsible for possibly the largest changes the earth has undergone. They were the only major source of atmospheric oxygen critical for the development of more complex life.
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DETAILS
SPECIES
Unidentified
LOCATION
Sakha-Jakiutia, Siberia, Russia
FORMATION
Torgo Formation
SIZE
6.7 x 5.8", .35" thick
CATEGORY
ITEM
#227209
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