STROMATOLITE (POLISHED SLICE) - 100 million years old - Andes Mountains, Bolivia
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Cut and polished
100 million years old
(Cretaceous period)
Potosi, Andes Mountains, Bolivia
This is a beautiful example of a stromatolite preserved in rock.
Stromatolites are structures formed in shallow water by cyanobacteria (blue-green algae). They are among the oldest fossils, dating back 3.5 billion years. They use water, carbon dioxide and sunlight to create food and give out oxygen as a by-product and are thought to have been responsible for the oxygen in the Earth’s primaeval atmosphere. Today stromatolite communities are rare.
This specimen is a more unusual and horizontal cross section. It is polished on both sides. It is supplied with a free plastic stand.
Click on a picture for a larger image
Size: 11 x 8.5 x 1 centimetres
Weight: 225 grams
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