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The Age of Reptiles in Three Acts

Reptiles emerged from the Paleozoic as humble creatures, but in time, they grew to become some of the largest forms of life ever to stomp, swim, and soar across the planet. This Age of Reptiles was a spectacular prehistoric epic, and it all took place in a single era: the Mesozoic.
Season 1 Episode 40 Length 10:45 Premiere: 05/07/18

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Clips & Previews

Specials

Season 1 Episodes

The Two People We're All Related To
S1 E62 Length 08:44 Premiere Date 10/25/18

Your Place in the Primate Family Tree
S1 E61 Length 11:35 Premiere Date 10/17/18

When Giant Amphibians Reigned
S1 E60 Length 09:51 Premiere Date 10/17/18

Can We Get DNA From Fossils?
S1 E59 Length 11:22 Premiere Date 10/03/18

Did Raptorex Really Exist?
S1 E58 Length 12:27 Premiere Date 09/19/18

When We First Walked
S1 E57 Length 10:56 Premiere Date 09/19/18

Life, Sex & Death Among the Dire Wolves
S1 E56 Length 09:15 Premiere Date 09/19/18

The Rise and Fall of the Bone-Crushing Dogs
S1 E55 Length 08:29 Premiere Date 08/28/18

How a Supervolcano Made the Cenozoic’s Coolest Fossils
S1 E54 Length 09:15 Premiere Date 08/28/18

How Horses Took Over North America (Twice)
S1 E53 Length 09:08 Premiere Date 08/14/18

When Birds Had Teeth
S1 E52 Length 11:29 Premiere Date 08/07/18

When Fish Wore Armor
S1 E51 Length 09:37 Premiere Date 07/24/18

The Mystery of the Eocene’s Lethal Lake
S1 E50 Length 07:59 Premiere Date 07/17/18

When Insects First Flew
S1 E49 Length 08:38 Premiere Date 07/10/18

FAQs From Our First Year
S1 E48 Length 09:20 Premiere Date 07/03/18

How the T-Rex Lost Its Arms
S1 E47 Length 06:54 Premiere Date 06/26/18

When Fish First Breathed Air
S1 E46 Length 08:40 Premiere Date 06/19/18

Where Did Viruses Come From?
S1 E45 Length 07:29 Premiere Date 06/12/18

Why Triassic Animals Were Just the Weirdest
S1 E44 Length 09:07 Premiere Date 06/05/18

That Time It Rained for Two Million Years
S1 E43 Length 07:31 Premiere Date 05/22/18

From the Fall of Dinos to the Rise of Humans
S1 E42 Length 12:34 Premiere Date 05/16/18

The Weird, Watery Tale of Spinosaurus
S1 E41 Length 07:28 Premiere Date 05/08/18

The Age of Reptiles in Three Acts
S1 E40 Length 10:45 Premiere Date 05/07/18

How the Chalicothere Split In Two
S1 E39 Length 07:03 Premiere Date 04/24/18

How the Squid Lost Its Shell
S1 E38 Length 08:05 Premiere Date 04/17/18

What Was the Ancestor of Everything?
S1 E37 Length 11:06 Premiere Date 04/11/18

Inside the Dinosaur Library
S1 E36 Length 07:19 Premiere Date 04/02/18

The Most Useful Fossils In The World
S1 E35 Length 05:49 Premiere Date 03/26/18

What a Dinosaur Looks Like Under a Microscope
S1 E34 Length 08:09 Premiere Date 03/19/18

How the Turtle Got Its Shell
S1 E33 Length 08:29 Premiere Date 03/12/18

The Other Explosion You Should Know About
S1 E32 Length 06:25 Premiere Date 03/05/18

How Sex Became A Thing
S1 E31 Length 05:39 Premiere Date 02/26/18

From the Cambrian Explosion to the Great Dying
S1 E30 Length 10:28 Premiere Date 02/20/18

The Whole Saga of the Supercontinents
S1 E29 Length 08:40 Premiere Date 02/12/18

The Great Snake Debate
S1 E28 Length 06:28 Premiere Date 02/05/18

Untangling the Devil's Corkscrew
S1 E27 Length 06:11 Premiere Date 01/29/18

The Time Terror Birds Invaded
S1 E26 Length 05:32 Premiere Date 01/22/18

How Two Microbes Changed History
S1 E25 Length 07:39 Premiere Date 01/15/18

When Giant Fungi Ruled
S1 E24 Length 06:37 Premiere Date 12/18/17

What Happened to the World's Greatest Ape?
S1 E23 Length 07:01 Premiere Date 12/11/17

The Last Time the Globe Warmed
S1 E22 Length 09:54 Premiere Date 12/04/17

The Facts About Dinosaurs & Feathers
S1 E21 Length 10:01 Premiere Date 11/27/17

The Search for the Earliest Life
S1 E20 Length 05:37 Premiere Date 11/20/17

A Brief History of Geologic Time
S1 E19 Length 12:08 Premiere Date 11/07/17

An Illustrated History of Dinosaurs
S1 E18 Length 12:20 Premiere Date 02/15/18

When Whales Walked
S1 E17 Length 04:56 Premiere Date 10/23/17

Living Fossils' Aren't Really a Thing
S1 E16 Length 05:05 Premiere Date 10/16/17

When The Earth Was Purple
S1 E15 Length 05:37 Premiere Date 10/09/17

How Did Dinosaurs Get So Huge?
S1 E14 Length 05:42 Premiere Date 10/02/17

History's Most Powerful Plants
S1 E13 Length 05:20 Premiere Date 09/26/17

The Age of Giant Insects
S1 E12 Length 05:28 Premiere Date 09/18/17

The Strange Case of the Buzzsaw Jaws
S1 E11 Length 03:54 Premiere Date 09/11/17

The Extinction That Never Happened
S1 E10 Length 07:36 Premiere Date 09/21/17

Dimetrodon: Our Most Unlikely Ancestor
S1 E9 Length 05:21 Premiere Date 09/21/17

The Biggest Thing That Ever Flew
S1 E8 Length 04:27 Premiere Date 08/14/17

That Time Oxygen Almost Killed Everything
S1 E7 Length 04:45 Premiere Date 08/07/17

The Story of Saberteeth
S1 E6 Length 05:26 Premiere Date 07/31/17

What Colors Were Dinosaurs?
S1 E5 Length 05:02 Premiere Date 07/24/17

Stegosaurs: Tiny Brains & Thagomizers
S1 E4 Length 04:49 Premiere Date 07/17/17

The Tully Monster & Other Problematic Creatures
S1 E3 Length 04:01 Premiere Date 07/11/17

When Did the First Flower Bloom?
S1 E2 Length 04:21 Premiere Date 07/03/17

The Trouble With Trilobites
S1 E1 Length 06:46 Premiere Date 06/26/17

A Quick Introduction to Eons
Preview Length 01:28 Premiere Date 06/22/17

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