Geological Time Scale
Explore Earth's history through this interactive geological time scale. Click on any era, period, or epoch to learn more.
Phanerozoic Eon (541 Ma - Present)
Cenozoic Era (66 Ma - Present)
Quaternary Period (2.58 Ma - Present)
Holocene & Pleistocene epochs
Geological Time Scale Viewer
Explore the interactive geological time scale with eras, periods, and epochs. Click on any segment to learn more about Earth's history.
Cenozoic
Mesozoic
Paleozoic
Precambrian
Select a geological time period
Click on an era, period, or epoch above to see details here.