The Standard Geologic Column and Time Scale
© Robert E. Gentet 2015
Eras
Systems (of Rocks)
Periods (of Time)
Series (of Rocks)
Epochs (of Time)
Millions of Years
(Standard Geologic Time)
0 - 1.5
1.5 - 65
65 - 245
245 - 500
Recent
Pleistocene
Tertiary
Pliocene
Miocene
Oligocene
Eocene
Paleocene
Devonian
Silurian
Ordovician
Cambrian
Cenozoic
500 - 4600
Cretaceous
Jurassic
Triassic
Permian
Pennsylvanian
Mississippian
Carboniferous Systems
Mesozoic
Paleozoic
Precambrian
Quaternary