Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
417.1 Ma
Paleozoic
Devonian
Early Devonian
Lochkovian
Silurian
Pridoli
Ludlow
Ludfordian
Gorstian
Wenlock
Homerian
Sheinwoodian
Llandovery
Telychian
Aeronian
Rhuddanian
Ordovician
Late Ordovician
Hirnantian
58.4 Ma
Paleozoic
Cambrian
Series 3
Drumian
Stage 5
Series 2
Stage 4
Stage 3
Terreneuvian
Stage 2
Fortunian
Neoproterozoic
Ediacaran
515.1 Ma
Mesoproterozoic
Stenian
Ectasian