Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
319.0 Ma
Paleozoic
Carboniferous
Pennsylvanian
Bashkirian
Mississippian
Serpukhovian
Visean
13.4 Ma
Paleozoic
Carboniferous
Mississippian
Tournaisian
Devonian
Late Devonian
Famennian
Frasnian
54.1 Ma
Paleozoic
Silurian
Ludlow
Gorstian
Wenlock
Homerian
Sheinwoodian
Llandovery
Telychian
Aeronian
Rhuddanian
Ordovician
Late Ordovician
Hirnantian
Katian
Sandbian
Middle Ordovician
Darriwilian
Dapingian
Early Ordovician
Floian
Tremadocian
Cambrian
Furongian
Stage 10
Jiangshanian
Paibian
Series 3
Guzhangian
Drumian
Stage 5
Series 2
Stage 4
Stage 3
582.0 Ma
Mesoproterozoic
Stenian