History of Life

4.5 BYA

Apr 1, 2012

FORMATION OF THE SOLAR SYSTEM AND THE MOON

4.0 BYA

Apr 2, 2012

LATE HEAVY BOMBARDMENT AND FORMATION OF THE EARTH'S CRUST AND OCEANS

3.5 BYA

Apr 3, 2012

OLDEST GEOLOGICAL EVIDENCE OF LIFE

3.0 BYA - 2.5 BYA

Apr 4, 2012

PROLIFERATION OF CYANOBACTERIA

2.0 BYA

Apr 5, 2012

EVOLUTION OF EUKARYOTES

1.2 BYA

Apr 6, 2012

EVOLUTION OF MULTICELLULAR ORGANISMS

0.5 BYA

Apr 7, 2012

CAMBRIAN EXPLOSION

230 MYA - 65 MYA

Apr 8, 2012

REIGN OF THE DINOSAURS

2000 TYA

Apr 9, 2012

APPEARANCE OF MODERN HUMANS