Eons
How the Turtle Got Its Shell (S02E09)
What is the origin of turtles, and how did they develop their shells? Discovering the answers to these questions would lead scientists to reevaluat...
S02E09
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Season 2 Episodes
S02E02 - The Time Terror Birds Invaded
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S02E03 - Untangling the Devil's Corkscrew
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S02E04 - The Great Snake Debate
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S02E05 - The Whole Saga of the Supercontinents
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S02E06 - From the Cambrian Explosion to the Great Dying
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S02E07 - How Sex Became a Thing
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S02E08 - The Other Explosion You Should Know About
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S02E09 - How the Turtle Got Its Shell
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S02E10 - What a Dinosaur Looks Like Under a Microscope
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S02E11 - The Most Useful Fossils in the World
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S02E12 - Inside the Dinosaur Library
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S02E13 - What Was the Ancestor of Everything?
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S02E14 - How the Squid Lost Its Shell
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S02E15 - How the Chalicothere Split In Two
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S02E16 - The Age of Reptiles in Three Acts
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S02E17 - The Weird, Watery Tale of Spinosaurus
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S02E18 - From the Fall of Dinos to the Rise of Humans
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S02E19 - That Time It Rained for Two Million Years
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S02E20 - Why Triassic Animals Were Just the Weirdest
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S02E21 - Where Did Viruses Come From?
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S02E22 - When Fish First Breathed Air
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S02E23 - How the T-Rex Lost Its Arms
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S02E24 - FAQs From Our First Year
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S02E25 - When Insects First Flew
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S02E26 - The Mystery of the Eocene’s Lethal Lake
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S02E27 - When Fish Wore Armor
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S02E28 - When Birds Had Teeth
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S02E29 - How Horses Took Over North America (Twice)
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S02E30 - How a Supervolcano Made the Cenozoic’s Coolest Fossils
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S02E31 - The Rise and Fall of the Bone-Crushing Dogs
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S02E32 - Life, Sex & Death Among the Dire Wolves
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S02E33 - When We First Walked
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S02E34 - Did Raptorex Really Exist?
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S02E35 - Can We Get DNA From Fossils?
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S02E36 - When Giant Amphibians Reigned
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S02E37 - Your Place in the Primate Family Tree
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S02E38 - The Two People We're All Related To
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S02E39 - When Rodents Rafted Across the Ocean
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S02E40 - When Birds Stopped Flying
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S02E41 - When Camels Roamed North America
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S02E42 - How Sloths Went From the Seas to the Trees
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S02E43 - When Sharks Swam the Great Plains
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S02E44 - When Apes Conquered Europe
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