Episode Overview
Whether you've visited, lived in, or even just flown over the central region of North America, you’ve likely noticed traces of a remarkably intriguing ecosystem. Known to scientists as the Western Interior Seaway, this body of water once stretched from the Caribbean Sea all the way to the Canadian Arctic during its peak.
Show Information
Season 2 Episodes 45
1.
How Two Microbes Changed History
2.
The Time Terror Birds Invaded
3.
Untangling the Devil's Corkscrew
4.
The Great Snake Debate
5.
The Whole Saga of the Supercontinents
6.
From the Cambrian Explosion to the Great Dying
7.
How Sex Became a Thing
8.
The Other Explosion You Should Know About
9.
How the Turtle Got Its Shell
10.
What a Dinosaur Looks Like Under a Microscope
11.
The Most Useful Fossils in the World
12.
Inside the Dinosaur Library
13.
What Was the Ancestor of Everything?
14.
How the Squid Lost Its Shell
15.
How the Chalicothere Split In Two
16.
The Age of Reptiles in Three Acts
17.
The Weird, Watery Tale of Spinosaurus
18.
From the Fall of Dinos to the Rise of Humans
19.
That Time It Rained for Two Million Years
20.
Why Triassic Animals Were Just the Weirdest
21.
Where Did Viruses Come From?
22.
When Fish First Breathed Air
23.
How the T-Rex Lost Its Arms
24.
FAQs From Our First Year
25.
When Insects First Flew
26.
The Mystery of the Eocene’s Lethal Lake
27.
When Fish Wore Armor
28.
When Birds Had Teeth
29.
How Horses Took Over North America (Twice)
30.
How a Supervolcano Made the Cenozoic’s Coolest Fossils
31.
The Rise and Fall of the Bone-Crushing Dogs
32.
Life, Sex & Death Among the Dire Wolves
33.
When We First Walked
34.
Did Raptorex Really Exist?
35.
Can We Get DNA From Fossils?
36.
When Giant Amphibians Reigned
37.
Your Place in the Primate Family Tree
38.
The Two People We're All Related To
39.
When Rodents Rafted Across the Ocean
40.
When Birds Stopped Flying
41.
When Camels Roamed North America
42.
How Sloths Went From the Seas to the Trees
43.
When Sharks Swam the Great Plains
44.
When Apes Conquered Europe
45.
Why Megalodon (Definitely) Went Extinct
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