Note that this hypothesis has been challenged, e.g. here [1] (paper here [2]). [1] https://www.earthmagazine.org/article/lack-fungi-did-not-lead-copious-carbon

Note that this hypothesis has been challenged, e.g. here [1] (paper here [2]). [1] https://www.earthmagazine.org/article/lack-fungi-did-not-lead-copious-carboniferous-coal/ https://www.earthmagazine.org/article/lack-fungi-did-not-lea... [2] https://www.pnas.org/doi/10.1073/pnas.1517943113 https://www.pnas.org/doi/10.1073/pnas.1517943113