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The Traits That Spawned the Age of Mammals

Season 4 Episode 2 | 7m 44s

Lots of the traits we think of as defining us as mammals show up pretty early, during the time of the dinosaurs. And, in some cases, they show up a lot earlier and in things that weren’t mammals at all.

Aired: 07/20/21
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500+ pterosaur fossils found at Solnhofen may be hiding a dark secret distorting our view of them.
Why are our teeth so sensitive? The answer originates in the armored skin of ancient fish.
For flowering plants to take over, they first helped burn the old world—and then put the fires out.
Ancient weeds mimicked crops, tricking farmers into domesticating friends—and enemies—by mistake.
Brains and brawn aren’t opposites—they’ve been linked far longer than we might think.
Understanding the Isthmus of Panama.
How we might borrow genes from that ancient past of Greenland to help us adapt to the future.
Tiny mammals and a group of lizard-like reptiles shared a trait that helped them survive extinction.
Where the space rock came from 66 million years ago that crashed and killed the dinosaurs.