-13.8 Ga-4.5 Ga-3.8 Ga-541.0 Ma-252.0 Ma-66.0 Ma-50.0 Ma-20.0 Ma-10.0 Ma-5.0 Ma-2.0 Ma-1.5 Ma-1.0 Ma500,000 BC200,000 BC100,000 BC50,000 BC20,000 BC10,000 BC8,000 BC5,000 BC3,000 BC2,000 BC1,000 BC500 BC0 AD500 AD1,000 AD1,500 AD2,000 ADBig BangAtoms formMilky Way assembly startsSun and Solar System formEarth formsMoon formsOrganisms emergePhotosynthesisGreat OxidationEukaryotesCambrian ExplosionPlants colonise landFirst reptiles on landThe Great DyingDinosaursMammalsK–Pg extinctionCenozoic EraHuman–chimp last common ancestorHumans evolve in Africa; first stone toolsHumans spread into EurasiaNeanderthals evolveDaily use of fireHomo sapiens evolvesCognitive RevolutionSapiens settle AustraliaNeanderthals go extinctSapiens settle the AmericasHomo floresiensis goes extinctAgricultural Revolution
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