Rise of the Mammals
Season 46 Episode 17 | 53m 17s
Sixty-six million years ago, an asteroid wiped out the dinosaurs in a fiery global catastrophe. But we know little about how their successors, the mammals, recovered and took over the world. Now, hidden inside ordinary-looking rocks, an astonishing trove of fossils reveals a dramatic new picture of how rat-sized creatures ballooned in size and began to evolve into the vast array of species.
Expires: 10/23/21Video has closed captioning.
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Stunning new mammal fossils were hiding in plain sight.