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The Age of Reptiles in Three Acts

The Age of Reptiles in Three Acts

Season 1 Episode 40
10:45
The Weird, Watery Tale of Spinosaurus

The Weird, Watery Tale of Spinosaurus

Season 1 Episode 41
7:28
Early Life on Earth

Where Did Viruses Come From?

Season 1 Episode 45
7:29
When Fish First Breathed Air

When Fish First Breathed Air

Season 1 Episode 46
8:40
Dinosaurs

How the T-Rex Lost Its Arms

Season 1 Episode 47
6:54
FAQs From Our First Year

FAQs From Our First Year

Season 1 Episode 48
9:20
When Insects First Flew

When Insects First Flew

Season 1 Episode 49
8:38
When Fish Wore Armor

When Fish Wore Armor

Season 1 Episode 51
9:37
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Eons

How the Chalicothere Split In Two

Season 1 Episode 39

Two extinct relatives of horses and rhinos are closely related to each other but have strikingly different body plans. How did two of the same kind of animal, living in the same place, end up looking so different?

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Season
A Brief History of Geologic Time
12:08
Geologists have been able to identify crucial episodes in life’s history.
An Illustrated History of Dinosaurs
12:20
Our image of dinosaurs has been constantly changing since naturalists started studying the
When Whales Walked
4:56
We know whales as graceful giants bound to the sea.
Living Fossils' Aren't Really a Thing
5:05
Even the most ancient-looking organisms show us that evolution is always at work.
When The Earth Was Purple
5:37
But imagine a time when the Earth looked a little … purple.
How Did Dinosaurs Get So Huge?
5:42
Creatures as tall as a five-story buildings shook the Earth.
History's Most Powerful Plants
5:20
Fossil fuels are made from the remains of extinct organisms.
The Age of Giant Insects
5:28
Insects and other arthropods weren’t always so small.
The Strange Case of the Buzzsaw Jaws
3:54
A 270-million-year-old sea creature called Helicoprion that once swam the seas.
The Extinction That Never Happened
7:36
Natural history is full of living things that were long thought to have gone extinct only
Dimetrodon: Our Most Unlikely Ancestor
5:21
Take a close look and you might see a little bit of yourself.
The Biggest Thing That Ever Flew
4:27
Today, we’re familiar with two types of flying vertebrates -- birds and bats.
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