When a massive asteroid wiped out the dinosaurs, ants began farming fungi CNNAsteroid impact may have turned ants into fungus farmers 66 million years ago ScienceGenetic database shows some fungal crops became completely reliant on ants 27 million years ago Phys.orgScientists discover how ants took advantage of the asteroid that wiped out the dinosaurs The IndependentAnts Farmed Fungi in the Wake of Dinosaurs’ Demise 66 Million Years Ago Smithsonian Magazine