Basic Timeline
The basic timeline of a 4.6 billion year old Earth, with approximate dates:
- 3.6 billion years of simple cells (prokaryotes),
- 3.4 billion years of stromatolites demonstrating photosynthesis,
- 2 billion years of complex cells (eukaryotes),
- 1 billion years of multicellular life,
- 600 million years of simple animals,
- 570 million years of arthropods (ancestors of insects, arachnids and crustaceans),
- 550 million years of complex animals,
- 500 million years of fish and proto-amphibians,
- 475 million years of land plants,
- 400 million years of insects and seeds,
- 360 million years of amphibians,
- 300 million years of reptiles,
- 200 million years of mammals,
- 150 million years of birds,
- 130 million years of flowers,
- 65 million years since the dinosaurs died out,
- 2.5 million years since the appearance of the genus Homo,
- 200,000 years of anatomically modern humans,
- 25,000 years since the disappearance of Neanderthal traits from the fossil record.
- 13,000 years since the disappearance of Homo floresiensis from the fossil record.
Read more about this topic: Timeline Of Evolutionary History Of Life
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