Study describe fossils of possible fungi that could be up to a billion years old. An electron microscope showed the fossil cell walls were bi-layered like a fungus, and chemically looked like it contained derivatives of chitin, a complex polymer of sugars that forms the cell wall of modern fungi.

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Study describe fossils of possible fungi that could be up to a billion years old. An electron microscope showed the fossil cell walls were bi-layered like a fungus, and chemically looked like it contained derivatives of chitin, a complex polymer of sugars that forms the cell wall of modern fungi.