Ants learned to farm fungi during a mass extinction Ars TechnicaAnts Mastered Agriculture Millions of Years Before Humans NewsweekScientists discover how ants took advantage of an asteroid that killed the dinosaurs The IndependentAnts Farmed Fungi in the Wake of Dinosaurs’ Demise 66 Million Years Ago Smithsonian MagazineGenetic database shows some fungal crops became completely reliant on ants 27 million years ago Phys.org