Uploaded March 2026 | Updated September 2026, 3 weeks ago

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FROM THE ARCHIVES: What did Earth look like before the dinosaurs went extinct? Britannica attempted to answer that in its 1970 film: "Dinosaurs: The Age of the Terrible Lizards." Are these lizards really so terrible? And what did Britannica get wrong about dinosaurs back in the 70s? Let us know in the comments below.

More from Britannica:
Did Dinosaurs Have Feathers? britannica.com/story/how-do-we-know-that-dinosaurs-may-have-had-feathers
Why Does "-Saur" Appear in So Many Dino Names? britannica.com/story/why-does--saur-appear-so-often-in-dinosaur-names

00:00 Opening Credits
00:42 Intro
01:46 Mesozoic Era
03:15 Land
05:32 Water
06:01 Air
07:30 Size
08:08 Duckbills
08:50 T. rex
09:18 Triceratops
09:50 Stegosaurus
10:16 Brain
11:23 Fight
12:27 Skeletons
13:45 Dig
17:29 Fossil Recreation
20:49 Extinction
22:23 End Credits

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