A Fossil Cellular Microbe (<i>Primaevifilum minutum</i>) (IMAGE)

Proceedings of the National Academy of Sciences

A Fossil Cellular Microbe (<i>Primaevifilum minutum</i>)

Caption

A fossil cellular microbe (Primaevifilum minutum) from the 3.5-billion-year-old chert interpreted to be a non-oxygen-producing photosynthesizer.

Credit

PNAS

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