Is Fungus the Decomposer of the Earth?

Fungus may have played a role in the evolving primacy of mammals in the food chain after the k p g extinction. A new study has found that fungus was getting to run a post k t extinction event. This is just something that wouldn't have been possible ten years ago. And all this also backed up by fossil evidence we used to see oke winter when lichen branching occurred among some families.