Stromatolite Fossil Bolivia Precambrian Polished Slice Natural Specimen 111mm For Sale
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Stromatolite Fossil Bolivia Precambrian Polished Slice Natural Specimen 111mm:
$49.03
Stromatolite Fossil Bolivia Precambrian Polished Slice Natural Specimen 139mmThis polished stromatolite slice from Bolivia measures approximately 11.1cm and exposes a striking cross-section through the original layered structure. Across both faces, dark brown and black bands form repeated domed and column-like patterns against warm ochre and golden-brown material, with the strongest layering concentrated around the outer portions of the specimen.
Stromatolites are structures created by communities of microorganisms living in shallow aquatic environments. Layer by layer, microbial mats trapped sediment and encouraged mineral deposition, gradually building the distinctive laminated formations seen in polished cross-section today. The rounded and undulating bands visible within this specimen represent those successive phases of growth rather than the remains of a single organism.
These Bolivian stromatolites date to the Paleoproterozoic, approximately 2.2–2.4 billion years ago, placing them extraordinarily early in the history of life on Earth. Stromatolites provide some of the most important evidence for ancient microbial ecosystems, and photosynthetic microorganisms such as cyanobacteria played a major role in producing oxygen and transforming Earth’s atmosphere. This long process helped create the oxygen-rich conditions that eventually allowed complex life to develop.
As well as its scientific significance, this specimen has particularly attractive natural patterning, with the polished surface making the ancient growth structures easy to examine while retaining the irregular outline of the original material.
Type: Stromatolite
Age: Paleoproterozoic, approximately 2.2–2.4 billion years old
Origin: Bolivia
Approximate size: 11.1cm
All specimens are genuine and carefully selected for quality and presentation.
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