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The History of the Earth Timeline
Some important events in the Earth's History
28
Science
11th Grade
09/24/2013

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Cards

Term
Earth Forms
Definition
4.56 Billion years ago (BP)
Term
Oldest piece of rock ever found
Definition
4.1 Billion years old (BP)
Term
Oldest evidence of a continent
Definition
3.9 Billion years (BP)
Term
First evidence of life
Definition
3.8 Billion years (BP)
Term
First fossils (alage and bacteria)
Definition
3.5 Billion years (BP)
Term
Free O2 in atmosphere
Definition
1.8 Billion years (BP)
Term
First abundant life found in the rock record
Definition
540 Million years (BP)
Term
First fish
Definition
460 Million years (BP)
Term
First land plants
Definition
440 Million years (BP)
Term
First land animals
Definition
410 Million years (BP)
Term
Largest mass extinction
Definition
250 Million years (BP)
Term
First dinosuars
Definition
247 Million years (BP)
Term
First mammals
Definition
240 Million years (BP)
Term
Break-up of super continent Pangaea begins
Definition
220 Million years (BP)
Term
First flowering plants
Definition
145 Million years (BP)
Term
Dinosuars and other animals go extinct
Definition
65 Million years (BP)
Term
Mammals/flowering-plants become abundant
Definition
30 Million years (BP)
Term
Beginning of Cascade
Definition
5 Million years (BP)
Term
First primate in genus Homo
Definition
1.8 Million years (BP)
Term
First homosapiens
Definition
40,000 years (BP)
Term
Humans first inhabit North America
Definition
13,000 years (BP)
Term
End of last Ice Age
Definition
10,000 years (BP)
Term
Founding of Jericho (first known city)
Definition
8,000 years (BP)
Term
Roman domination of the world
Definition
2,000 years (BP)
Term
European rediscovery of the Americas
Definition
500 years (BP)
Term
Humans first explore the moon
Definition
~34 years (BP)
Term
First fossil of complex organism (worm)
Definition
1.1 Billion years (BP)
Term
Oldest mineral grain ever found
Definition
4.4 Billion years (BP)
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