NORGES

The 2004 Time Scale

F.M. Gradstein, J.G. Ogg, A.G. Smith et al.: Geologic Time Scale 2004. Cambridge University Press.

International Stratigraphic Chart - April 2006

Time scales through history

Interactive time scale creator, TSCreator.

Gradstein, F.M. & Finney, S. 2007. On the Ordovician Period and Quaternary Sub-Era. GeoArabia 12:205-210

Standard timescale color code

Detailed charts:

Eonothem/EonErathem/EraSystem/PeriodCharts Time Scale Creator charts
Phanerozoic Cenozoic Neogene Planktonic forams & nannos
Dinos & rads
Pliocene-Pleistocene
All
Paleogene Planktonic forams & nannos (upper part)
Dinos & rads (upper part)
Terrestrial (upper part)
Planktonic forams & nannos (lower part)
Dinos & rads (lower part)
Terrestrial (lower part)
All
Mesozoic Cretaceous Upper part
Middle part
Lower part
Late
Early
Jurassic Upper part
Lower part
Late
Early
Triassic Upper part
Lower part
Late
Early
Paleozoic Permian Upper part
Lower part
Carboniferous Upper part
Lower part
Devonian Upper part
Lower part
Silurian Graptolites & conodonts
Graptolites, chitinozoans & terrestrial
Ordovician Upper part
Lower part
Cambrian Upper part
Lower part