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The Geological Timescale


EON ERA EPOCH SERIES STAGE AGE (BP) Other Name
PhanerozoicQuaternary Holocene Flandrian Post-Glacial 10000
Pleistocene Upper Devensian Glacial 75000
Cenozoic Ipswichian Interglacial 125000
Anglian Glacial 175000
Middle Hoxnian Interglacial 375000
Cromerian Complex 430000 "Crag"
Lower Pre-Cromerian 2m
Pliocene 5.5m Neogene
Miocene 22.5m
Oligocene Latorfian 36m Palaeogene
Eocene Upper Headonian 39m
Middle Marinesian 42m
Lutetian 50m
Lower Cuisian 53m
Sparnacian 57m
Thanetian 61m
Palaeocene Dano-Montian 65m
Mesozoic Cretaceous Upper Maastrichtian 74m Upper Chalk
Campanian 83m
Santonian 87m
Coniacian 89m
Turonian 90m Middle Chalk
Cenomanian 97m Lower Chalk
Lower Albian 112m Gault
Aptian 125m Lower Greensand
Barremian 132m
Hautverian 135m
Valanginian 141m
Ryazanian 146m
Jurassic Upper Portlandian 135m
Kimmeridgian 155m
Oxfordian 157m Corallian Beds
Middle Callovian 161m
Bathonian 166m
Bajocian 174m
Aalenian 178m
Lower Toarcian 187m Upper Lias
Pliensbachian 195m Middle Lias
Sinemurian 203m Lower Lias
Hettangian 208m
Triassic Upper Rhaetian 210m
Norian 223m
Carnian 235m
Middle Ladinian 240m
Anisian 241m
Lower Scythian 245m
Palaeozoic Permian Zechstein 256m
Rotliegendes 290m
Carboniferous Upper Stephanian 303m Pennsylvanian
Westphalian 318m
Namurian 333m
Lower Visean 350m Mississippian
Tournasian 362m
Devonian Famennian 367m
Frasnian 377m
Giventian 381m
Eifelian 386m
Emsian 390m
Siegenian 396m
Geddinnian 408m
Silurian Pridoli 411m
Ludlow 424m
Wenlock 430m
Llandovery 439m
Ordovician Ashgill 443m
Caradoc 464m
Llandeilo 468m
Llanvirn 476m
Arenig 493m
Tremadoc 510m
Cambrian Merioneth 517m
St Davids 536m
Comley 570m
Proterozoic Sinian Vendian 610m Pre-Cambrian
Sturtian 800m
Riphean 1.65b
Aphebian 2.7b
Archean 4.0b Azoic
Priscoan 4.5b

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