Banded Iron Formation - Nuvvuagittug

 

Proposed oldest fossils in the world, with 3.77 billion years (3.77Ga)

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https://www.ucl.ac.uk/made-at-ucl/stories/unearthing-worlds-oldest-fossils

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https://astrobiology.nasa.gov/news/oldest-evidence-for-early-life-on-earth-dated-to-at-least-377-billion-years/