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Eons
When a Billion Years Disappeared
Season 3
Episode 3
In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it. This missing chapter in Earth’s history might be linked to a fracturing supercontinent, out-of-control glaciers, and maybe the diversification of life itself.
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This is Lizards' Fascinating And Competitive History.

11:27
This small change in our appearance has helped shape the evolution of our entire lineage.

7:53
It arose from rhino ancestors, but Paraceratherium took a different evolutionary path.

8:48
Aegirocassis may have been the biggest animal in the Early Ordovician.

6:46
What is it about the crab’s form that makes it so evolutionarily successful?

7:52
We’ve only started to get to the bottom of how clubs worked and how it developed.

9:48
How and why does botanical carnivory keep evolving?

8:54
Our primate family tree actually originated here!

8:23
The horns probably had a purpose - one that rodents would likely benefit from today.

6:27
How did this giant marine reptile end up high in the Andes Mountains?

9:43
What if the rock art drawings of strange animals really existed?

8:48
How did Thrinaxodon and Broomistega become entombed together?