Eons
When Ichthyosaurs Led a Revolution in the Seas (S03E20)
After The Great Dying, which decimated over 90 percent of ocean life and forever altered the marine ecosystem, the marine reptiles known as Ichthyo...
S03E20
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Season 3 Episodes
S03E02 - How Blood Evolved (Many Times)
Eons
S03E03 - The Humans That Lived Before Us
Eons
S03E04 - The Island of Shrinking Mammoths
Eons
S03E05 - The Evolution of the Heart (A Love Story)
Eons
S03E06 - How 7,000 Years of Epic Floods Changed the World
Eons
S03E07 - The Island of Huge Hamsters and Giant Owls
Eons
S03E08 - The Giant Bird That Got Lost in Time
Eons
S03E09 - When We First Made Tools
Eons
S03E10 - When Giant Scorpions Swarmed the Seas
Eons
S03E11 - When We Tamed Fire
Eons
S03E12 - The Mystery Behind the Biggest Bears of All Time
Eons
S03E13 - The Croc That Ran on Hooves
Eons
S03E14 - When We Took Over the World
Eons
S03E15 - The Ghostly Origins of the Big Cats
Eons
S03E16 - The History of Climate Cycles (and the Woolly Rhino) Explained
Eons
S03E17 - The Hellacious Lives of the "Hell Pigs"
Eons
S03E18 - How Evolution Works (And How We Figured It Out)
Eons
S03E19 - When the Synapsids Struck Back
Eons
S03E20 - When Ichthyosaurs Led a Revolution in the Seas
Eons
S03E21 - When We Met Other Human Species
Eons
S03E22 - How Volcanoes Froze the Earth (Twice)
Eons
S03E23 - How Earth's First, Unkillable Animals Saved the World
Eons
S03E24 - When Giant Deer Roamed Eurasia
Eons
S03E25 - Was This Dinosaur a Cannibal?
Eons
S03E26 - The Missing Link That Wasn’t
Eons
S03E27 - The Raptor That Made Us Rethink Dinosaurs
Eons
S03E28 - When Bats Took Flight
Eons
S03E29 - How Pterosaurs Got Their Wings
Eons
S03E30 - When Giant Lemurs Ruled Madagascar
Eons
S03E31 - When Antarctica Was Green
Eons
S03E32 - The Case of the Dinosaur Egg Thief
Eons
S03E33 - When Hobbits Were Real
Eons
S03E34 - Were These Monsters Inspired by Fossils?
Eons
S03E35 - How We Domesticated Cats (Twice)
Eons
S03E36 - When Giant Hypercarnivores Prowled Africa
Eons
S03E37 - Why Male Mammoths Lost the Game
Eons
S03E38 - The Forgotten Story of the Beardogs
Eons