GeologicTimescale

Numbers refer to end of time period, in millions of years before now.

NeogenePeriod

23 PalaeogenePeriod

65 MesozoicEra

CretaceousPeriod

146 JurassicPeriod

208 TriassicPeriod

245 PalaeozoicEra

PermianPeriod

290 CarboniferousPeriod

363 DevonianPeriod

409 SilurianPeriod

439 OrdovicianPeriod

510 CambrianPeriod

570 PrecambrianEra