-
1 CE
Hadean Event: Proto-Earth and Planetoid Theia Collide
-
1 CE
Origin of Earth
-
10
Oldest Rocks
-
17
Earliest Chemical Evidence of Life
-
17
Archean Event: Oceans Cool & Form
-
54
First Eukaryotic Cells Appear
-
60
Free Oxygen in the Atmosphere
-
69
Formation of Early Rodinia
-
84
Early Multicellular Organisms
-
84
Proterozoic Event: Snowball Earth Hypothesis
-
88
Cambrian Explosion
-
88
Early Shelled Organisms
-
89
Early Fish Appear
-
90
End-Ordovician Extinction
-
91
First Land Animals
-
91
Late Devonian Extinction
-
91
Acadian Orogeny
-
93
Final Assembly of Pangea
-
93
Earliest Trees Appear + Formation of Coal Deposits
-
94
End-Permian Extinction
-
95
Dinosaurs Become Dominant
-
95
End-Triassic Extinction
-
95
Mesozoic: Major Volcanic Eruptions
-
96
Earliest Angiosperms Appear
-
97
Coniferous Plants are most abundant
-
98
North America and Europe Separate
-
98
End-Cretaceous/ K-PG Extinction
-
99
Mammals + Flowering Plants Become Abundant
-
99
Great American Biotic Interchange
-
99
First primate, genus Homo appears
-
99
Beginning of Recorded Human History
-
99
My Birth Year (2001)
-
99
Modern Homo Sapiens Appear
-
99
Most Recent Ice Age Ends
