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THE GENIUS OF CHARLES DARWIN -- ILLUSTRATED SCREENPLAY & SCREENCAP GALLERY |
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So, each layer you go down to,
you find a completely different set of animals.
And if you look at the animals that you find and plants
over the great span of time,
you find that they form a kind of ordered sequence.
You find fish 400 million years ago,
but you find no mammals at all 400 million years ago.
The fish gradually changed into amphibians,
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