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Season 4
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Eons
When It Was Too Hot for Leaves
For the first 80 million years of plants' existence, leaves didn't exist. Here's why.
Eons
When a Giant Pterosaur Ruled the European Islands
The giant pterosaur's occupied the empty Hateg Island.
Eons
The Sudden Rise of the First Colossal Animal
A truly enormous ichthyosaur reached its size within just a few million years.
Eons
Is This The Oldest Dad In The Fossil Record?
Diictodon used burrows to breed and a male parent may have stayed behind to feed it.