Science History
4700Ma Solar system forming
3900Ma Life appear
600Ma Sponge (One germ layer)
580Ma Jellyfish (Two germ layer)
550Ma Flatworm (Three germ layer)
505Ma Fish
360Ma Amphibian
300Ma Reptile
220Ma Mammal
65Ma Primates
2.5Ma Human Genus
600K Hunting-gathering
500K Speaking language
400K Fire-making
70000BC Clothing
60000BC Human being migration
50000BC Modern human
40000BC Painting
35000BC Flute and music
35000BC Tallystick and counting
28000BC Ceramics
13000BC Domestic pig
9000BC First city
4500BC Bronze
3000BC Pyramid
500AD Arabic numbers
1687AD Universal Gravitation
If you like this app, please buy full version to support me, thanks.