This post is a basic timeline of Earth. There are 9 events listed below chronologically. Source: Wikipedia
- Formation of Earth (4.5 billion years ago)
- First life (4.0 billion years ago)
- First photosynthesis (3.2 billion years ago)
- Oxygen-rich atmosphere (2.3 billion years ago)
- Cambrian explosion (530 million years ago)
- First vertebrate animals (380 million years ago)
- First dinosaurs (230 million years ago)
- Extinction of dinosaurs (66 million years ago)
- First humans (2 million years ago)
- First civilization (4000 BC)
