Paleozoic
Carboniferous
Pennsylvanian
Kasimovian
Moscovian
115.7 Ma
Paleozoic
Silurian
Ludlow
Ludfordian
1.8 Ma
Paleozoic
Silurian
Ludlow
Gorstian
Wenlock
Homerian
Sheinwoodian
Llandovery
Telychian
118.9 Ma
Neoproterozoic
Ediacaran
378.4 Ma
Neoproterozoic
Tonian
Mesoproterozoic
Stenian