-
3650 BCE
Earliest Evidence of Life
-
Period: 3650 BCE to 550 BCE
Precambrian Era
-
2500 BCE
First Photosynthetic/Autotrophic Bacteria Appear
-
2200 BCE
First Great Extinction
Aerobic organisms come alive and bacteria producing oxygen affect the environment. -
1750 BCE
First Eukaryotes
-
650 BCE
Sexual Reproduction Begins
-
650 BCE
Multicellular Life
-
550 BCE
Cambrian Explosion
-
Period: 550 BCE to 245 BCE
Paleozoic Era
-
505 BCE
Marine Invertebrates
-
438 BCE
Second Great Extinction
Fish Arrive -
408 BCE
Land Plants Appear
-
360 BCE
Great Extinction III
Amphibians appear -
286 BCE
Reptilian Life Appears
-
245 BCE
The Fourth Great Extinction
Seed plants appear -
Period: 245 BCE to 66 BCE
Mesozoic Era
-
208 BCE
A Fifth Great Extinction
Mammals and dinosaurs appear -
144 BCE
Primitive Birds Appear
-
66 BCE
Final Great Extinction
rest in peace dinosaurs -
Period: 66 BCE to
Cenozoic Era
-
60 BCE
Primates Appear
-
38 BCE
Anthropoids Appear
-
37 BCE
Primitive Horses Appear
-
1 BCE
Humans Appear
-
19
Jesus's Date of Birth
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Declaration of Independence