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4600 million years ago
(4.6 billion years ago)
Formation of Earth
4500 million years ago
(4.5 billion years ago)
Accretion of Earth
Formation of the Moon
4400 million years ago
(4.4 billion years ago)
Accretion of Earth
4300 million years ago
(4.3 billion years ago)
Iron Catastrophe
Earth separates into layers
4200 million years ago
(4.2 billion years ago)
Early Atmosphere
No Life
4100 million years ago
(4.1 billion years ago)
Early Atmosphere
No Life
4000 million years ago
(4.0 billion years ago)
Oldest Rocks on Earth
3900 million years ago
(3.9 billion years ago)
Liquid Water Present
Early Oceans Form
3800 million years ago
(3.8 billion years ago)
First Bacteria
(Prokaryotic)
3700 million years ago
(3.7 billion years ago)
Bacteria
3600 million years ago
(3.6 billion years ago)
Bacteria
3500 million years ago
Stromatolites
(3.5 billion years ago)
Cyanobacteria
(aka blue green algae)
Photosynthesis Produces Oxygen!
3400 million years ago
Stromatolites
(3.4 billion years ago)
Cyanobacteria
(aka blue green algae)
Photosynthesis Produces Oxygen!
3300 million years ago
Stromatolites
(3.3 billion years ago)
Cyanobacteria
(aka blue green algae)
Photosynthesis Produces Oxygen!
3200 million years ago
Stromatolites
(3.2 billion years ago)
Cyanobacteria
(aka blue green algae)
Photosynthesis Produces Oxygen!
3100 million years ago
Stromatolites
(3.1 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
3000 million years ago
Stromatolites
(3.0 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
2900 million years ago
Stromatolites
(2.9 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
2800 million years ago
Stromatolites
(2.8 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
2700 million years ago
Stromatolites
(2.7 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
2600 million years ago
Stromatolites
(2.6 billion years ago)
Cyanobacteria
Photosynthesis Produces Oxygen!
2500 million years ago
Stromatolites
(2.5 billion years ago)
Photosynthesis Produces Oxygen!
2400 million years ago
Stromatolites
(2.4 billion years ago)
Photosynthesis Produces Oxygen!
2300 million years ago
Stromatolites
(2.3 billion years ago)
Photosynthesis Produces Oxygen!
2200 million years ago
Stromatolites
(2.2 billion years ago)
Photosynthesis Produces Oxygen!
2100 million years ago
Stromatolites
(2.1 billion years ago)
Photosynthesis Produces Oxygen!
2000 million years ago
Beginning of Oxygenated Atmosphere
Redbeds
First Pollution Crisis!
(2.0 billion years ago)
Evidence of significant free oxygen
1900 million years ago
Oxygenated Atmosphere
(1.9 billion years ago)
Cyanobacteria still producing oxygen!
1800 million years ago
Oxygenated Atmosphere
(1.8 billion years ago)
Cyanobacteria still producing oxygen!
1700 million years ago
Cells get a nucleus!
(1.7 billion years ago)
Single-celled Eukaryotes Appear
Still Present:
1600 million years ago
(1.6 billion years ago)
Single-celled Eukaryotes
Still Present:
1500 million years ago
(1.5 billion years ago)
Single-celled Eukaryotes
Still Present:
1400 million years ago
(1.4 billion years ago)
Single-celled Eukaryotes
Still Present:
1300 million years ago
(1.3 billion years ago)
Single-celled Eukaryotes
Still Present:
1200 million years ago
(1.2 billion years ago)
Single-celled Eukaryotes
Still Present:
1100 million years ago
(1.1 billion years ago)
Single-celled Eukaryotes
Still Present:
Earth View
1000 million years ago
(1.0 billion years ago)
Multicellular Organisms Appear
Marine Invertebrates
Soft Bodies
900 million years ago
Still Present:
Marine Invertebrates Flourish
800 million years ago
Still Present:
Marine Invertebrates Flourish
Earth View
700 million years ago
Still Present:
Marine Invertebrates Flourish
Earth View
600 million years ago
Earth View
Still Present:
Ediacara Fauna
500 million years ago
543 mya
First Hard Parts
(Shells & Bones)
First Primitive Fish
Life Migrates to Land
470 mya
Earth View
438 million years ago
Mass Extinction
400 million years ago
First Seed Plants
First Amphibians
Most life still underwater
Still Present:
367 million years ago
Mass Extinction
300 million years ago
Earth View
Vast Coal Swamps on Land
Origin of Many Animals
amphibians, sharks, reptiles, insects
245 million years ago
Earth View
Mass Extinction
90 % of all species perish
200 million years ago
Age of the Dinosaurs and Reptiles
First mammals
Earth View
Still Present:
Plant Life: Ferns & Gymnosperms
100 million years ago
First birds
First Placental Mammals
Still Present:
First Flowering Plants
65 million years ago
Mass Extinction
Extinction of the dinosaurs and others
Earth View
65 million years ago to Present Day
(0 mya)
Dominance of
flowering plants, insects
mammals, and birds
Earth View
Still Present:
Humans 5 mya
Smithsonian Institute
Field Museum
NASA
University of California, Berkeley Museum
http://rainbow.ldeo.columbia.edu/courses/v1001/7.html
http://www.geol.umd.edu/~kaufman/ppt/chapter3/sld019.htm
http://www.uta.edu/geology/geol1425earth_system/images/gaia_chapter_11/ArcheanLandscape.jpg
http://www.uta.edu/geology/geol1425earth_system/1425chap11.html
http://www.geol.umd.edu/~kaufman/ppt/chapter3/sld019.htm
http://www.exhibits.lsa.umich.edu/Exhibits/Anthropology/Diaramas/Nat.Am./Copper/Copper.html

Picture Credits