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The Creature That Stumped Darwin

Toxodon was one of the last members of a lineage that vanished 11,000 years ago after thriving in isolation for millions of years. And its fossils would inspire a revolutionary thinker to tackle a bigger mystery than Toxodon itself: evolution.
Season 4 Episode 6 Length 06:46 Premiere: 09/01/21

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Season 4 Episodes

The Fungi That Turned Ants Into Zombies
S4 E40 Length 08:13 Premiere Date 08/23/22

How Whale Evolution Kind Of Sucked
S4 E39 Length 09:49 Premiere Date 08/16/22

Did An Ancient Pathogen Reshape Our Cells?
S4 E38 Length 07:40 Premiere Date 08/09/22

Why Does Caffeine Exist?
S4 E37 Length 08:29 Premiere Date 07/28/22

How Plate Tectonics Transformed Los Angeles
S4 E36 Length 12:34 Premiere Date 07/21/22

When Giant Millipedes Reigned
S4 E35 Length 07:02 Premiere Date 07/12/22

Giant Viruses Blur The Line Between Alive and Not
S4 E34 Length 09:19 Premiere Date 06/29/22

Something Has Been Making This Mark For 500 Million Years
S4 E33 Length 09:42 Premiere Date 06/15/22

We Can “Bring Back” The Woolly Mammoth. Should We?
S4 E32 Length 06:40 Premiere Date 06/08/22

Is This The Oldest Dad In The Fossil Record?
S4 E31 Length 06:37 Premiere Date 05/26/22

The Curious Case of the Cave Lion
S4 E30 Length 08:09 Premiere Date 05/17/22

When Ants Domesticated Fungi
S4 E29 Length 09:05 Premiere Date 05/10/22

The Ancient Human Species With A Missing Body
S4 E28 Length 07:56 Premiere Date 04/27/22

Why Sour May Be The Oldest Taste
S4 E27 Length 07:02 Premiere Date 04/20/22

How the Smallest Animal Got So Simple
S4 E26 Length 06:52 Premiere Date 04/13/22

The Extreme Hyenas That Didn't Last
S4 E25 Length 07:50 Premiere Date 03/29/22

The Sudden Rise of the First Colossal Animal
S4 E24 Length 08:44 Premiere Date 03/22/22

When a Giant Pterosaur Ruled the European Islands
S4 E23 Length 08:50 Premiere Date 03/15/22

Why We Only Have Ten Toes (It's a Long Story)
S4 E22 Length 09:12 Premiere Date 02/23/22

How Horses Went From Food To Friends
S4 E21 Length 06:32 Premiere Date 02/16/22

How Vertebrates Got Teeth... And Lost Them Again
S4 E20 Length 08:52 Premiere Date 02/08/22

Did Eating Insects Shrink These Dinos?
S4 E19 Length 10:21 Premiere Date 01/27/22

Primates vs Snakes (An Evolutionary Arms Race)
S4 E18 Length 07:53 Premiere Date 01/18/22

How Our Deadliest Parasite Turned To The Dark Side
S4 E17 Length 08:06 Premiere Date 01/11/22

When Pterosaurs Walked
S4 E16 Length 09:38 Premiere Date 12/16/21

The 40 Million-Year-Old Ecosystem In Your Mouth
S4 E15 Length 08:14 Premiere Date 12/09/21

Why The Paleo Diet Couldn't Save The Neanderthals
S4 E14 Length 09:17 Premiere Date 12/02/21

When It Was Too Hot for Leaves
S4 E13 Length 10:11 Premiere Date 11/17/21

How Dinosaurs Coupled Up
S4 E12 Length 07:49 Premiere Date 10/28/21

How Ancient Whales May Have Changed the Deep Ocean
S4 E11 Length 10:05 Premiere Date 10/21/21

When Mammals Only Went Out At Night
S4 E10 Length 11:09 Premiere Date 10/07/21

How a Mass Extinction Event Created the Amazon
S4 E9 Length 07:55 Premiere Date 09/29/21

How a Supervolcano Ignited an Evolutionary Debate
S4 E8 Length 09:59 Premiere Date 09/23/21

How Pollination Got Going Twice
S4 E7 Length 09:32 Premiere Date 09/16/21

The Creature That Stumped Darwin
S4 E6 Length 06:46 Premiere Date 09/01/21

How the Starfish Got Its Arms
S4 E5 Length 10:53 Premiere Date 08/24/21

Where Are All the Medium-Sized Dinosaurs?
S4 E4 Length 11:01 Premiere Date 08/12/21

The Island of the Last Surviving Mammoths
S4 E3 Length 08:06 Premiere Date 07/29/21

The Traits That Spawned the Age of Mammals
S4 E2 Length 07:44 Premiere Date 07/21/21

Did These Giant Sloths Poop Themselves to Death?
S4 E1 Length 10:01 Premiere Date 07/14/21

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