Geokronoloogiline skaala Georg S G2R1 By medis 4600 BCE Hadaikum Period: 4600 BCE to 4000 BCE Hadaikum 4000 BCE Arhaikum Period: 4000 BCE to 2500 BCE Arhaikum Period: 2500 BCE to 542 BCE Proterosoikum Period: 542 BCE to 252 BCE Paleosoikum Period: 542 BCE to 1 BCE Fanerosoikum Period: 252 BCE to 66 BCE Mesosoikum Period: 66 BCE to 2 BCE Kainosoikum
