4steps from the big bang
48things can go into it
mammals
NaturalLiving
The first true mammals were small, furry and nocturnal, living in the dinosaurs' shadow. They fed their young on milk.
First appearedAbout 200 million years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Evolved from
The first true mammals were small, furry and nocturnal, living in the dinosaurs' shadow. They fed their young on milk.
From the big bang to mammals
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
sheepc. 11,000 yrs ago
mammalsc. 200 m yrs ago