Factually! with Adam Conover cover image

The Rise and Reign of the Mammals with Stephen Brusatte

Factually! with Adam Conover

CHAPTER

The Expansion of the Earth's Ego Systems

Dinosaurs had been ruling the world for over a hundred and 50 million years, and then bam. This horrible, unexpected, completely unpredictable, random act of space violence happens. Triserotops was there, as were mammals, the small mammals, they're all there looking over the gagn o ss going on. Because they would have no idea, you know, e would have had no clue. But we had ancestors that stared down that asteroid. And this is worth just repeating and thinking about. Three out of every four species that were alive the day the asteroid hit are gone. That's when mammals, finely, finely, started to get bigger. They took over for the

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