
Uncover the surprising ancient origins of mammals, a story that began long before the dinosaurs' reign. Surveying Earth's tumultuous past reveals how some of our earliest ancestors, the therapsids – creatures that looked like reptiles but were starting to develop mammalian traits – survived multiple global catastrophes. Through remarkable adaptations like burrowing and the emergence of warm-bloodedness, they forged a lineage that persevered against all odds. Fascinating fossil clues and cutting-edge science reveal how a small, resilient group of animals faced extinction events, outlived giants, and ultimately gave rise to the diverse world of mammals we know today, including us.
Directed byThomas Cirotteau
Featuring

Mercer Boffey
Self - Narrator
Keep watching

1937
The Nervous System
1937 · Film

1989
After Man
1989 · Film

1931
The Frog
1931 · Film
7.82014·7.8
Attacking the Devil: Harold Evans and the Last Nazi War Crime
2014 · Film
6.02023·6.0
House of Grucci
2023 · Film

2024
Testerep
2024 · Film

2025
Dinolandia
2025 · Film

2018
The Sun: Inferno in the Sky
2018 · Film
8.01948·8.0
Popular Science L-7-4
1948 · Film

1938
Popular Science J-8-1
1938 · Film

2024
A Symphonic Odyssey with Professor Brian Cox
2024 · Film
6.22017·6.2
The Hunt for Dark Matter
2017 · Film
7.52025·7.5
Cracking the Code: Phil Sharp and the Biotech Revolution
2025 · Film

2021
Living Worlds
2021 · Film
7.61996·7.6
Microcosmos
1996 · Film
7.22024·7.2
The Sun
2024 · Film
8.02026·8.0
La Station spatiale internationale - Missions à haut risque
2026 · Film
Picked for you
6.62024·6.6
Secrets of the Neanderthals
2024 · Film
7.72017·7.7
Earth: One Amazing Day
2017 · Film
7.12023·7.1
Unknown: Cave of Bones
2023 · Film
6.81996·6.8
Looking for Richard
1996 · Film
8.92026·8.9
You Can See Everything
2026 · Film
7.52011·7.5
One Life
2011 · Film
7.72009·7.7
Charles Darwin and the Tree of Life
2009 · Film
7.32010·7.3
180° South
2010 · Film
8.02025·8.0
My Mom Jayne
2025 · Film
6.82026·6.8
The Crash
2026 · Film
7.42022·7.4
Dinosaurs: The Final Day with David Attenborough
2022 · Film
7.12022·7.1
Fantastic Beasts: A Natural History
2022 · Film
7.12025·7.1
Come See Me in the Good Light
2025 · Film
7.42016·7.4
Bright Lights: Starring Carrie Fisher and Debbie Reynolds
2016 · Film
7.02019·7.0
The Inventor: Out for Blood in Silicon Valley
2019 · Film
7.32021·7.3
14 Peaks: Nothing Is Impossible
2021 · Film
7.61999·7.6
42 Up
1999 · Film
7.22022·7.2
Polar Bear
2022 · Film
6.62014·6.6
Harmontown
2014 · Film
6.82010·6.8
Food Matters
2010 · Film