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Eons

Why Wasn't There A Second Age of Reptiles?

Season 7 Episode 15 | 9m 59s

An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals. But why was it the mammals who triumphed?

Aired: 02/24/25
Extras
Watch • 10:09
Eons
How Mountains Make Evolution Weird
What do mountains reveal about primates?
Episode: S7 E14 | 10:09
Watch • 10:39
Eons
The Mystery of the Cretaceous Pompeii
When you take a deeper look at Pompeii, a different story could be told about the final moments.
Episode: S7 E13 | 10:39
Watch • 10:38
Eons
How Asteroids Set the Stage for Life on Earth
We may have planet-shattering asteroids...
Episode: S7 E12 | 10:38
Watch • 11:50
Eons
When Neandertals Became Apex Predators
What doomed the Neandertals?
Episode: S7 E11 | 11:50
Watch • 11:25
Eons
When the Amazon Flowed Backwards
What did life look like when the Amazon watershed flowed backwards?
Episode: S7 E10 | 11:25
Watch • 12:10
Eons
How Animals Got Butts
Did you know the evolution of the butthole was a major breakthrough in animal development?
Episode: S7 E9 | 12:10
Watch • 12:28
Eons
What Happened To The Other Mesozoic Mammals?
Learn about the complicated the history of mammals and their disappearance.
Episode: S7 E8 | 12:28
Watch • 9:19
Eons
The Dinosaurs That Evolution Forgot
Where are all the east coast dinosaurs?
Episode: S7 E7 | 9:19
Watch • 10:50
Eons
Where Did the Moon Come From?
Where did our moon come from? The origin is even stranger than you may imagine.
Episode: S7 E5 | 10:50
Watch • 10:04
Eons
How the Himalayas Changed the World
The Himalayas changed everything.
Episode: S7 E6 | 10:04
Latest Episodes
All
  • All
  • Eons Season 7
  • Eons Season 6
  • Eons Season 5
  • Eons Season 4
  • Eons Season 3
  • Eons Season 2
  • Eons Season 1
Watch • 10:09
Eons
How Mountains Make Evolution Weird
What do mountains reveal about primates?
Episode: S7 E14 | 10:09
Watch • 10:39
Eons
The Mystery of the Cretaceous Pompeii
When you take a deeper look at Pompeii, a different story could be told about the final moments.
Episode: S7 E13 | 10:39
Watch • 10:38
Eons
How Asteroids Set the Stage for Life on Earth
We may have planet-shattering asteroids...
Episode: S7 E12 | 10:38
Watch • 11:50
Eons
When Neandertals Became Apex Predators
What doomed the Neandertals?
Episode: S7 E11 | 11:50
Watch • 11:25
Eons
When the Amazon Flowed Backwards
What did life look like when the Amazon watershed flowed backwards?
Episode: S7 E10 | 11:25
Watch • 12:10
Eons
How Animals Got Butts
Did you know the evolution of the butthole was a major breakthrough in animal development?
Episode: S7 E9 | 12:10
Watch • 12:28
Eons
What Happened To The Other Mesozoic Mammals?
Learn about the complicated the history of mammals and their disappearance.
Episode: S7 E8 | 12:28
Watch • 9:19
Eons
The Dinosaurs That Evolution Forgot
Where are all the east coast dinosaurs?
Episode: S7 E7 | 9:19
Watch • 10:50
Eons
Where Did the Moon Come From?
Where did our moon come from? The origin is even stranger than you may imagine.
Episode: S7 E5 | 10:50
Watch • 10:04
Eons
How the Himalayas Changed the World
The Himalayas changed everything.
Episode: S7 E6 | 10:04