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Season 1 Episode 40 | 10m 45s
Reptiles emerged from the Paleozoic as humble creatures, but in time, they grew to become some of the largest forms of life ever to stomp, swim, and soar across the planet. This Age of Reptiles was a spectacular prehistoric epic, and it all took place in a single era: the Mesozoic.
Aired: 05/07/18
Video has closed captioning.
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Scientists have been working for decades to unlock the genetic secrets of the past.
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Horses vanished from North America for 10,000 years until a mammal brought them back.
420 million years ago, some fish wore armor – and it may have served a surprising purpose.
