Year Index

4500 - 3800 Ma	Hadean Eon	417 - 354 Ma	Devonian Period
3800 - 3600 Ma	Eoarchean Era	354 - 290 Ma	Carboniferous Period
3600 - 3200 Ma	Paleoarchean Era	290 - 248 Ma	Permian Period
3200 - 2800 Ma	Mesoarchean Era	248 - 206 Ma	Triassic Period - Mesozoic
2800 - 2500 Ma	Neoarchean Era	206 - 144 Ma	Jurassic Period
2500 - 2300 Ma	Siderian Period	144 - 65 Ma	Cretaceous Period
2300 - 2050 Ma	Rhyacian Period	65 - 23 Ma	Paleogene Period - Cenozoic
2050 - 1800 Ma	Orosirian Period	23 - 2 Ma	Neogene Period
1800 - 1600 Ma	Statherian Period	2 Ma - 10000 BCE	Quarternary Period
1600 - 1400 Ma	Calymmian Period	10000 - 5000 BCE	Recent Era
1400 - 1200 Ma	Ectasian Period	4999 - 4000 BCE	Recent Era
1200 - 1000 Ma	Stenian Period	3999 - 3000 BCE	Recent Era
1000 - 850 Ma	Tonian Period	2999 - 2000 BCE	Recent Era
850 - 635 Ma	Cryogenian Period	1999 - 1000 BCE	Recent Era
635 - 542 Ma	Ediacaran Period	999 - 0 BCE	Recent Era
542 - 488 Ma	Cambrian Period- Paleozoic	1 - 1000 CE	Recent Era
488 - 443 Ma	Ordovician Period	1001 - 2000 CE	Last Millenium
443 - 417 Ma	Silurian Period	2001 - 2010 CE	Current Decade