Timeline of Environmental History - 4,560,000,000 Ya

4,560,000,000 Ya

4.56 Ga

• Geo : Formation of our solar system: Solar system

3.8 Ga

• Evo : Prokaryotes : Simple Cells

3.6 Ga

• Geo : Vaalbara Supercontinent

3.0 Ga

• Evo : photosynthesis
• Geo : Ur Supercontinent smaller than Australia is today

2.7 Ga

• Geo : Kenorland Supercontinent : Forms

2.4 Ga

• Geo : Great Oxygenation Event
• Clima : Huronian Ice Age : Begins

2.1 Ga

• Clima : Huronian Ice Age : Ends
• Geo : Kenorland Supercontinent : Splits