• Question: how old are the oldest fossils on earth

    Asked by anon-238824 to Hannah, binuraj, Alice on 18 Mar 2020.
    • Photo: Binuraj Menon

      Binuraj Menon answered on 18 Mar 2020:

      I made389gas,

      I have no correct answer to this and I am not an expert so what I could do is, just to google this for you.

    • Photo: Hannah Blyth

      Hannah Blyth answered on 19 Mar 2020:

      Hello made389gas 🙂 I was reminded of this while looking for information for other answers and I did a course in Astrobiology on Coursera when I was at University! As far as I am aware the earliest fossils were discovered in Western Australia and are dated back to about 3.5 billion years ago. These are stromatolites, which can be formed by the growth of layer upon layer of single-celled microbes, such as cyanobacteria.

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