Geological Timeline

The geological timeline for natural history and the geology of the earth can be traced back millions and even billions of years, from the formation of the universe, the forming of the planet Earth, and the evolution of all living things on the planet. It has been a fascinating journey that is constantly changing. In retrospect, humans have only been on the geological timeline for a very short period in history. Understand that the dates are approximations and things are changing all the time as new evidence is discovered.

Check out the timeline below to examine the long history of all living things!

Geological Timeline

4.6 Billion Years Ago Formation of The Solar System

4.6 Billion Years Ago Dust From The Birth of The Sun Forms The Earth

4.5 Billion Years Ago Earth's Crust and Core Formed

4.4 Billion Years Ago The Earth's First Oceans Formed

3.8 Billion Years Ago Single-Cell Organisms Without A Cell Nucleus (Prokaryotes)

3.7 Billion Years Ago Seafloor Spreading, Formation of Volcanoes and Mountains

1.8 Billion Years Ago Single-Cell Organisms With A Cell Nucleaus (Eukaryotes)

1.5 Billion Years Ago Oxygen Began To Accumlate In The Atmosphere

1.1 Billion Years Ago The First Sexually Reproducing Organism

700 Million Years Ago The First Simple Single-Celled Animals

570 Million Years Ago The First Anthropods Evolve

530 Million Years Ago The First Fish With Vertebrates Evolved

475 Million Years Ago The First Mossy Plants

450 Million Years Ago The First Land Plants With A Stem (Cooksonia)

435 Million Years Ago The First Soil Worms

425 Million Years Ago The First Land Animal (Kampecaris)

385 Million Years Ago The First Forest Appeared

350 Million Years Ago The First Land Vertebrates (Amphibians) Evolve From Fish

320 Million Years Ago The First Reptiles Evolved From Amphibians

225 Million Years Ago The Dinosaurs Evolved From Lizards

200 Million Years Ago The Mammals Evolved

150 Million Years Ago The First Birds Evolved

130 Million Years Ago The First Flowering Plants Evolved

100 Million Years Ago The First Bees Evolved

65 Million Years Ago The Dinosaurs and Ammonites Became EXTINCT

14 Million Years Ago The First Great Apes Appeared In Africa

2.5 Million Years Ago The Genus Homo Evolves

150,000 Years Ago The Homo Sapiens Evolved (Our Species)

35,000 Years Ago Homo Sapiens Left Africa and Migrated To The North

10,000 Years Ago End of The Last Ice Age

Note: All dates are approximations using various dating techiques to determine the age of plant and animal fossils found in the rock strata.

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