Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
Middle Pleistocene
Calabrian
71.1 Ma
Mesozoic
Cretaceous
Late Cretaceous
Maastrichtian
Campanian
Santonian
Coniacian
Turonian
Cenomanian
Early Cretaceous
Albian
Aptian
38.4 Ma
Mesozoic
Jurassic
Late Jurassic
Oxfordian
5.0 Ma
Mesozoic
Jurassic
Middle Jurassic
Bathonian
Bajocian
79.5 Ma
Mesozoic
Triassic
Early Triassic
Olenekian
Induan
101.4 Ma
Paleozoic
Carboniferous
Mississippian
Tournaisian
16.3 Ma
Paleozoic
Devonian
Late Devonian
Frasnian
Middle Devonian
Givetian
Eifelian
Early Devonian
Emsian
38.6 Ma
Paleozoic
Silurian
Wenlock
Sheinwoodian
Llandovery
Telychian
Aeronian
Rhuddanian
Ordovician
Late Ordovician
Hirnantian
Katian
Sandbian
Middle Ordovician
Darriwilian
2131.6 Ma
Neoarchean
Mesoarchean