-
66
Cenozoic Era
66 MYA -
179
Mesozoic Era
66 MYA- 245 MYA -
305
Paleozoic Era
245 MYA-550 MYA -
Precambrian Era
550 MYA- 3,650 MYA -
Earliest evidence of Life
3,650 MYA -
First Photosynthetic/autotrophic bacteria appear
2,500 MYA -
First Great Extinction, oxygen poducing bacteria "poison" the environment, age of aerobic organisms begins
2,200 MYA -
First Eukaryotes Appear
1,700 MYA -
Sexual Reproduction begins
650 MYA -
Multicellular Life appears
650 MYA -
"Cambrian Explosion"
550 MYA -
Marine Invertebrates Appear
505 MYA -
Great Extinction
438 MYA -
Land Plants Appear
408 MYA -
Great Extinction, amphibians appear
360 MYA -
Reptiles Appear
286 MYA -
Great Extinction, seed plants appear
245 MYA -
Great Extinction, mammals and dinosaurs appear
208 MYA -
Primitive Birds Appear
144 MYA -
Great Extinction, Dinosaurs disappear
66 MYA -
Primates appear
60 MYA -
Anthropoids
38 MYA -
Primitive Horses appear
37 MYA -
Humans Appear
0.1 MYA -
Historical date of Jesus birth
0.002 MYA -
USA's declaration of Independence
0.0002 MYA