Which organism, fossils found in azoic era?​

The earliest identifiable fossils consist of stromatolites, which are microbial mats formed in shallow water by cyanobacteria. The earliest stromatolites are found in 3.48 billion-year-old sandstone discovered in Western Australia. Stromatolites are found throughout the Archean and become common late in the Archean.

a substance in a physical state in which it does not resist change of shape and will expand indefinitely to fill any container.

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