3steps from the big bang
45things can go into it
amphibians
NaturalLiving
The first four-legged animals crawled out of the water about 370 million years ago.
First appearedAbout 370 million years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Evolved into
The first four-legged animals crawled out of the water about 370 million years ago.
From the big bang to amphibians
The most direct chain from the start of the universe, following what things are made from and, for living things, what they evolved from. Each step shows when it first appeared.
big bang13.8 bn yrs ago
Hhydrogen13.8 bn yrs ago
water4.4 bn yrs ago
amphibiansc. 370 m yrs ago