Hadean
Hadean Eon
4567 Ma
→ Permian · 252 Ma
HISTORY OF EARTHThe geologic time scale · Eons, Eras, Periods, Epochs and the major mass extinctions← older · ages in millions of years (Ma) · present →MASS EXTINCTIONS1End-Ordovician · 444 Ma2Late Devonian · 372 Ma3End-Permian - the Great Dying · 252 Ma4End-Triassic · 201 Ma5End-Cretaceous / K-Pg · 66 Mapresent-day biodiversity crisis (debated, ongoing)HadeanArcheanProterozoicPhanerozoicno formal subdivisionEoarcheanPaleoarcheanMesoarcheanNeoarcheanPaleoproterozoicMesoproterozoicNeoproterozoicPaleozoicMesozoicCenozoicno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionSiderianRhyacianOrosirianStatherianCalymmianEctasianStenianTonianCryogenianEdiacaranCambrianOrdovicianSilurianDevonianCarboniferousPermianTriassicJurassicCretaceousPaleogeneNeogeneQuaternaryno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionno formal subdivisionTerreneuvianSeries 2MiaolingianFurongianEarlyMiddleLateLlandoveryWenlockLudlowPridoliEarlyMiddleLateMississippianPennsylvanianCisuralianGuadalupianLopingianEarlyMiddleLateEarlyMiddleLateEarlyLatePaleoceneEoceneOligoceneMiocenePliocenePleistoceneHoloceneEONERAPERIODEPOCH45674031250016001000538.8485443.8419.2358.9298.9251.9201.414566232.60million years ago (Ma)12345Horizontal scale is not linear: very long intervals are logarithmically compressed for legibility - read the ages along the axis for true proportions. Boundary ages follow ICS (2023); Phanerozoic period/era colors follow the ICS/CGMW standard. The Hadean is informal; Cambrian "Series 2" is unnamed; the Anthropocene was not ratified as a formal epoch (2024).