
The rise of the mammals and fall of the dinosaurs (Ep 85)
Big Biology
00:00
What if the Asteroid Never Hit?
Mammals ind to day's wer about six thousand species, and the vast majority of those, about 95 %, are placenta mammals. But you also have marsupials. These are things like coalas and kangaroos. They're very unusual for people that live in europe or north america. And then there's one other type of living mammal, and these are the weirdest ones. While these are the monotremes, there's only a handful of species, the platipus and some different species of acidna. The odds were wer were slim. They were really slim. And you can imagine so many alternative histories. Now,
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