Eons
The Triassic Reptile With "Two Faces" (S04E39)
Determining the true appearance of this creature's face would require years of research by paleontologists. However, gaining insights into this unu...
S04E39
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Season 4 Episodes
S04E02 - The Neanderthals That Taught Us About Humanity
Eons
S04E03 - The Giant Dinosaur That Was Missing a Body
Eons
S04E04 - How South America Made the Marsupials
Eons
S04E05 - A Short Tale About Diplodocus' Long Neck
Eons
S04E06 - When the Rainforests Collapsed
Eons
S04E07 - How a Hot Planet Created the World's Biggest Snake
Eons
S04E08 - When the Sahara Was Green
Eons
S04E09 - When Penguins Went From The Sky To The Sea
Eons
S04E10 - How the Egg Came First
Eons
S04E11 - How Dogs (Eventually) Became Our Best Friends
Eons
S04E12 - When a Billion Years Disappeared
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S04E13 - The Risky Paleo Diets of Our Ancestors
Eons
S04E14 - How the Andes Mountains Might Have Killed a Bunch of Whales
Eons
S04E15 - How Plants Caused the First Mass Extinction
Eons
S04E16 - The Two Viruses That We’ve Had For Millions of Years
Eons
S04E17 - How We Identified One of Earth’s Earliest Animals
Eons
S04E18 - When Dinosaur Look-Alikes Ruled the Earth
Eons
S04E19 - The World Before Plate Tectonics
Eons
S04E20 - When Dinosaurs Chilled in the Arctic
Eons
S04E21 - How the Walrus Got Its Tusks
Eons
S04E22 - The Story of the Dino Stampede
Eons
S04E23 - The Biggest Frog that Ever Lived
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S04E24 - The Dinosaur Who Was Buried at Sea
Eons
S04E25 - How We Figured Out Fermentation
Eons
S04E26 - The Oddest Couple in the Fossil Record
Eons
S04E27 - How Ancient Art Captured Australian Megafauna
Eons
S04E28 - The Sea Monster from the Andes
Eons
S04E29 - When Rodents Had Horns
Eons
S04E30 - The First and Last North American Primates
Eons
S04E31 - How Plants Became Carnivores
Eons
S04E32 - How Ankylosaurs Got Their Clubs
Eons
S04E33 - Why Do Things Keep Evolving Into Crabs?
Eons
S04E34 - How Plankton Created A Bizarre Giant of the Seas
Eons
S04E35 - The Rise and Fall of the Tallest Mammal to Walk the Earth
Eons
S04E36 - How Humans Lost Their Fur
Eons
S04E37 - When Lizards Took Over the World
Eons
S04E38 - When the Earth Suddenly Stopped Warming
Eons