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35,000 BCE
Cyanobacteria (3.5 Billon BCE)
Oldest known bacteria -
Formed structures known as Stromatolites -
Capable of Photosynthesis and release Oxygen -
20,000 BCE
First Unicellular Eukaryotic Fossil (2 Billion BCE)
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16,000 BCE
First Multicellular Eukaryotic Fossil (1.6 Billion BCE)
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5600 BCE
First Animal Fossil Found (560 Million BCE)
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Primordial Soup Theory
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RNA World Hypothesis
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Ribosyme Discovery