The History of Life on Earth

The Formation of Earth (4.6 billion years ago)

Jan 1, 2015

The First Single-celled Organisms (3,500 million years ago)

Mar 3, 2015

First Multicellular Organisms (650 million years ago)

Nov 11, 2015

Cambrian Explosion (542 million years ago)

Nov 16, 2015

First Dinosaurs Evolve (231 million years ago)

Dec 10, 2015

Extinction of Dinosaurs (66 million years ago)

Dec 24, 2015

First Humans Evolve at 11:35 pm (400,000-200,000 years ago)

Dec 31, 2015

At 11:35 pm