Earth Timeline
4.56 Billion Years Ago
Earth Forms
4.4 Billion Years Ago
Oldest Mineral Grain found
4.1 Billion Years Ago
Oldest piece of rock ever found
3.9 Billion Years Ago
Oldest evidence of a continent
3.8 Billion Years Ago
First Evidence of Life
3.5 Billion Years Ago
First Fossils (algae and bacteria)
1.8 Billion Years Ago
Free O2 in atmosphere
1.1 Billion Years Ago
First fossil of a complex orgasnism (a worm)
540 Million Years Ago
First Abundant Life found in the Rock Record
460 Million Years Ago
First Fish
440 Million Years Ago
First Land Plants
410 Million Years Ago
First Land Animals
250 Million Years Ago
Largest Mass Extinction
247 Million Years Ago
First Dinosaurs
240 Million Years Ago
First Mammals
220 Million Years Ago
Break-up of super continent Pangaea begins
145 Million Years Ago
First flowering plants
65 Million Years Ago
Dinosaurs and other animals go extinct
30 Million Years Ago
Mammals/ flowering plants become abundant
5 Million Years Ago
Beginning of Cascade
1.8 Million Years Ago
First primate in genus Homo
40,000 Years Ago
First Homo Sapiens
13,000 Years Ago
Humas first inhabit North America
10,000 Years Ago
End of Last Ice Age
8,000 Years Ago
Founding of Jericho, the first known city
2,000 Years Ago
Roman domination of the World
500 Years Ago
European rediscovery of the Americas
About 34 Years Ago
Humans first explore the Moon
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