The structures belong to microfossils of Navifusa majensis, a presumed cyanobacteria found in northern Australia.

Thus, the ancient bacteria help scientists understand how one of the most fundamental life processes on Earth arose.

The teams research ispublishedtoday in Nature.

Stromatolites in Western Australia’s Shark Bay.

Stromatolites in Western Australia’s Shark Bay.Photo:Wikimedia Commons

Exactly when oxygenic photosynthesis evolved in cyanobacteria in relation to the Great Oxidation Event is unknown.

However, more fossils like the thylakoid-bearing N. majensis could provide some answers.

News from the future, delivered to your present.

Blue-green algae, which cause harmful algal blooms, are cyanobacteria.

Blue-green algae, which cause harmful algal blooms, are cyanobacteria.Photo: Justin Sullivan (Getty Images)

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U.S. President Donald Trump speaks to the media during a guided tour of the John F. Kennedy Center for the Performing Arts before leading a board meeting on March 17, 2025 in Washington, DC.

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