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BIO345- Assignment 2
2
Transcript
History of Life
Craig Green
BIO 345
|
| = 1 billion year
4.5 GYA
Formation of Earth
https://www.annualreviews.org/doi/abs/10.1146/annurev.ea.18.050190.001225?journalCode=earth
4.5 GYA
~3.8 GYA
Start of life
Microbes - earliest forms of life
~3.8 GYA
2.7 GYA
Orgin of Eukaryotes
2.7 GYA
2.3 GYA
Oxygenation of Earths Atmosphere
https://www.science.org/doi/full/10.1126/sciadv.1600134
2.3 GYA
2.0 GYA
Orgin of Multicellularity
2.0 GYA
65 MYA
Extinction of Dinosaurs
https://onlinelibrary.wiley.com/doi/full/10.1111/brv.12128
65 MYA
~200 KYA
Orgins of Homosapeins
200 KYA
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