In the Eocene Epoch, there was a reptile that had teeth equipped for biting through flesh, its hind legs were a lot longer than its front legs and instead of claws, its toes were each capped with hooves. How did this living nightmare come to evolve?
| Creator | Hank Green |
|---|---|
| Actor | Kallie Moore, Blake de Pastino, Michelle Barboza-Ramirez |
| Country | United States of America |
| Production | PBS Digital Studios |
| Season 0(6 episode) |
|---|
| Season 1(24 episode) |
| Season 2(45 episode) |
| Season 3(39 episode) |
| Season 4(39 episode) |
| Season 5(31 episode) |
| Season 6(68 episode) |
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