Made Of

Everything is made of something.

← What it takes

What it leads to →

Evolved from

early amniotes

Needs

air

5steps from the big bang

47things can go into it

reptiles

NaturalLiving

Lizards, snakes, turtles, crocodiles and dinosaurs all belong to this line, which split from the one leading to mammals over 300 million years ago.

First appearedAbout 312 million years ago

Evolved into

dinosaurs

Lizards, snakes, turtles, crocodiles and dinosaurs all belong to this line, which split from the one leading to mammals over 300 million years ago.

From the big bang to reptiles

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

star13.6 bn yrs ago

Ooxygen13.6 bn yrs ago

air2.4 bn yrs ago

reptilesc. 312 m yrs ago