5steps from the big bang
47things can go into it
synapsids
NaturalLiving
The line that leads to mammals. Early synapsids like Dimetrodon looked reptile-like but were never reptiles.
First appearedAbout 306 million years ago
Made Of
Everything is made of something.← What it takes
What it leads to →
Evolved from
Needs
Evolved into
The line that leads to mammals. Early synapsids like Dimetrodon looked reptile-like but were never reptiles.
From the big bang to synapsids
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
synapsidsc. 306 m yrs ago