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Did These Giant Sloths Poop Themselves to Death?

Did These Giant Sloths Poop Themselves to Death?

Season 4 Episode 1
10:01
The Traits That Spawned the Age of Mammals

The Traits That Spawned the Age of Mammals

Season 4 Episode 2
7:44
The Island of the Last Surviving Mammoths

The Island of the Last Surviving Mammoths

Season 4 Episode 3
8:06
Where Are All the Medium-Sized Dinosaurs?

Where Are All the Medium-Sized Dinosaurs?

Season 4 Episode 4
11:01
How the Starfish Got Its Arms

How the Starfish Got Its Arms

Season 4 Episode 5
10:53
The Creature That Stumped Darwin

The Creature That Stumped Darwin

Season 4 Episode 6
6:46
How Pollination Got Going Twice

How Pollination Got Going Twice

Season 4 Episode 7
9:32
How a Supervolcano Ignited an Evolutionary Debate

How a Supervolcano Ignited an Evolutionary Debate

Season 4 Episode 8
9:59
How a Mass Extinction Event Created the Amazon

How a Mass Extinction Event Created the Amazon

Season 4 Episode 9
7:55
When Mammals Only Went Out At Night

When Mammals Only Went Out At Night

Season 4 Episode 10
11:09
How Ancient Whales May Have Changed the Deep Ocean

How Ancient Whales May Have Changed the Deep Ocean

Season 4 Episode 11
10:05
How Dinosaurs Coupled Up

How Dinosaurs Coupled Up

Season 4 Episode 12
7:49
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Eons

Where Are All The Squid Fossils?

Season 3 Episode 45

It might surprise you but cephalopods have a pretty good fossil record, with one major exception. If squids were swimming around in the same oceans as their closest cousins, where did all the squids go?
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