From what I can tell, the "trees came before tree-eating-fungi" theory is discredited: Popular press: https://arstechnica.com/science/2016/01/why-was-most-of-t

From what I can tell, the "trees came before tree-eating-fungi" theory is discredited: Popular press: https://arstechnica.com/science/2016/01/why-was-most-of-the-earths-coal-made-all-at-once/ https://arstechnica.com/science/2016/01/why-was-most-of-the-... Full paper: https://www.pnas.org/content/113/9/2442 https://www.pnas.org/content/113/9/2442 Contextual overview: https://www.pnas.org/content/113/9/2334 https://www.pnas.org/content/113/9/2334