| -15,000,000,000 |
|
"Big Bang" |
| -4,600,000,000 |
|
Age of Sun and Earth |
| -4,000,000,000 |
|
First life appears on Earth (single-celled organisms) |
| -540,000,000 |
|
Cambrian Period - life proliferates in sea |
| -425,000,000 |
|
Vegetation colonizes land, and Arthropods first land animals |
| -230,000,000 |
|
First dinosaurs appear |
| -200,000,000 |
|
Continents begin to split into present configuration |
| -150,000,000 |
|
Archaeopteryx earliest known bird |
| -70,000,000 |
|
First primates and other modern mammals appear |
| -65,000,000 |
|
Dinosaurs die out |
| -4,000,000 |
|
Ape-like hominids first appear in Africa |
| -2,000,000 |
|
Australipithecidae makes tools, but later dies out |
| -750,000 |
|
Homo Habilus walks upright |
| -500,000 |
|
Homo Erectus - discovery of fire |
| -200,000 |
|
Neanderthal Man |
| -100,000 |
|
Anatomically modern Homo Sapiens appears in Africa |
| -25,000 |
|
Homo Sapiens reaches Europe - earliest Paleolithic art |
| -15,000 |
|
First Asian immigrants cross Bering Straits to North America |
| -9,000 |
|
Mastodons and other large animals become extinct |
| -8,000 |
|
End of last Ice Age |
| -6,000 |
|
New Stone Age (Neolithic) in Europe - settled agriculture |
| -3,000 |
|
Bronze Age in Europe |
| -1,800 |
|
Main circle built at Stonehenge, Britain |
| -1,000 |
|
Iron Age in Europe |
