2.6" Polished Stromatolite (Gongylina) Slab - 1.88 Billion Years

This is a beautiful polished slab of Paleoproterozoic stromatolites (Gongylina sp.) that was collected from a small island at the northeast end of Blanchet Island, within the Northwest Territories of Canada. These precambrian stromatolites have been dated at roughly 1.88 million years old. The slab has been polished to a glossy finish on one side.

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.
DETAILS
SPECIES
Gongylina sp.
LOCATION
NE of Blanchet Island, NWT, Canada
FORMATION
Utsingi Formation
SIZE
2.6 x 1.4", .2" thick
CATEGORY
ITEM
#180018
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