Stromatolites and Cyanobacteria: Oxygenating Earth's Ancient Seas

Posted: 2025-05-08 13:44:30 UTC

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This article contains some claims that remain unverified. While much of the content may be accurate, exercise care when relying on this information.

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2025-05-08 13:44:58 UTC

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Stromatolites, layered formations made by cyanobacteria, played a crucial role in oxygenating Earth's atmosphere billions of years ago.

Cyanobacteria are the primary builders of stromatolites.

Stromatolites are among the oldest known fossils, dating back billions of years.

Cyanobacteria oxygenated Earth's atmosphere 2.4 to 2.1 billion years ago.