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The Rise & Fall of ET Species | Ancient Aliens
7:37
YouTubeHISTORY
The Rise & Fall of ET Species | Ancient Aliens
Exploring Earth’s incredible diversity of life, this examination considers the many species that have vanished through past extinction events and the mysteries surrounding the planet’s ever-changing history. See more in this clip from Season 1, Episode 4, "The Mission." Stay up to date on all of your favorite shows on The HISTORY Channel ...
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