|
Eon
|
|
Era
|
|
Period
|
|
Epoch
|
|
Age/Stage
|
|
Years (Ma)
|
|
Hadean
|
|
-
|
|
4567.3 ± 0.16 – 4031 ± 3
|
|
Archean
|
|
Eoarchean
|
|
-
|
|
4031 ± 3 – 3600
|
|
Paleoarchean
|
|
-
|
|
3600 – 3200
|
|
Mesoarchean
|
|
-
|
|
3200 – 2800
|
|
Neoarchean
|
|
-
|
|
2800 – 2500
|
|
Proterozoic
|
|
Paleoproterozoic
|
|
Siderian
|
|
-
|
|
2500 – 2300
|
|
Rhyacian
|
|
-
|
|
2300 – 2050
|
|
Orosirian
|
|
-
|
|
2050 – 1800
|
|
Statherian
|
|
-
|
|
1800 – 1600
|
|
Mesoproterozoic
|
|
Calymmian
|
|
-
|
|
1600 – 1400
|
|
Ectasian
|
|
-
|
|
1400 – 1200
|
|
Stenian
|
|
-
|
|
1200 – 1000
|
|
Neoproterozoic
|
|
Tonian
|
|
-
|
|
1000 – ~720
|
|
Cryogenian
|
|
-
|
|
~720 – ~635
|
|
Ediacaran
|
|
-
|
|
~635 – 538.8 ± 0.6
|
|
Phanerozoic
|
|
Paleozoic
|
|
Cambrian
|
|
Terreneuvian
|
|
Fortunian
|
|
538.8 ± 0.6 – ~529
|
|
Age 2
|
|
~529 – ~521
|
|
Epoch 2
|
|
Age 3
|
|
~521 – ~514.5
|
|
Age 4
|
|
~514.5 – ~506.5
|
|
Miaolingian
|
|
Wuliuan
|
|
~506.5 – ~504.5
|
|
Drumian
|
|
~504.5 – ~500.5
|
|
Guzhangian
|
|
~500.5 – ~497
|
|
Furongian
|
|
Paibian
|
|
~497 – ~494.2
|
|
Jiangshanian
|
|
~494.2 – ~491
|
|
Age 10
|
|
~491 – 486.85 ± 1.5
|
|
Ordovician
|
|
Early
|
|
Tremadocian
|
|
486.85 ± 1.5 – 477.1 ± 1.2
|
|
Floian
|
|
477.1 ± 1.2 – 471.3 ± 1.4
|
|
Middle
|
|
Dapingian
|
|
471.3 ± 1.4 – 469.4 ± 0.9
|
|
Darriwilian
|
|
469.4 ± 0.9 – 458.2 ± 0.7
|
|
Late
|
|
Sandbian
|
|
458.2 ± 0.7 – 452.8 ± 0.7
|
|
Katian
|
|
452.8 ± 0.7 – 445.2 ± 0.9
|
|
Hirnantian
|
|
445.2 ± 0.9 – 443.1 ± 0.9
|
|
Silurian
|
|
Llandovery
|
|
Rhuddanian
|
|
443.1 ± 0.9 – 440.5 ± 1.0
|
|
Aeronian
|
|
440.5 ± 1.0 – 438.6 ± 1.0
|
|
Telychian
|
|
438.6 ± 1.0 – 432.9 ± 1.2
|
|
Wenlock
|
|
Sheinwoodian
|
|
432.9 ± 1.2 – 430.6 ± 1.3
|
|
Homerian
|
|
430.6 ± 1.3 – 426.7 ± 1.5
|
|
Ludlow
|
|
Gorstian
|
|
426.7 ± 1.5 – 425.0 ± 1.5
|
|
Ludfordian
|
|
425.0 ± 1.5 – 422.7 ± 1.6
|
|
Pridoli
|
|
422.7 ± 1.6 – 419.62 ± 1.36
|
|
Devonian
|
|
Early
|
|
Lochkovian
|
|
419.62 ± 1.36 – 413.02 ± 1.91
|
|
Pragian
|
|
413.02 ± 1.91 – 410.62 ± 1.95
|
|
Emsian
|
|
410.62 ± 1.95 – 393.47 ± 0.99
|
|
Middle
|
|
Eifelian
|
|
393.47 ± 0.99 – 387.95 ± 1.04
|
|
Givetian
|
|
387.95 ± 1.04 – 382.31 ± 1.36
|
|
Late
|
|
Frasnian
|
|
382.31 ± 1.36 – 372.15 ± 0.46
|
|
Famennian
|
|
372.15 ± 0.46 – 358.86 ± 0.19
|
|
Carboniferous
|
|
Mississippian
|
|
Early
|
|
Tournaisian
|
|
358.86 ± 0.19 – 346.7 ± 0.4
|
|
Middle
|
|
Visean
|
|
346.7 ± 0.4 – 330.3 ± 0.4
|
|
Late
|
|
Serpukhovian
|
|
330.3 ± 0.4 – 323.4 ± 0.4
|
|
Pennsylvanian
|
|
Early
|
|
Bashkirian
|
|
323.4 ± 0.4 – 315.2 ± 0.2
|
|
Middle
|
|
Moscovian
|
|
315.2 ± 0.2 – 307.0 ± 0.1
|
|
Late
|
|
Kasimovian
|
|
307.0 ± 0.1 – 303.7 ± 0.1
|
|
Gzhelian
|
|
303.7 ± 0.1 – 298.9 ± 0.15
|
|
Permian
|
|
Cisuralian
|
|
Asselian
|
|
298.9 ± 0.15 – 293.52 ± 0.17
|
|
Sakmarian
|
|
293.52 ± 0.17 – 290.1 ± 0.26
|
|
Artinskian
|
|
290.1 ± 0.26 – 283.3 ± 0.4
|
|
Kungurian
|
|
283.3 ± 0.4 – 274.4 ± 0.4
|
|
Guadalupian
|
|
Roadian
|
|
274.4 ± 0.4 – 266.9 ± 0.4
|
|
Wordian
|
|
266.9 ± 0.4 – 264.28 ± 0.16
|
|
Capitanian
|
|
264.28 ± 0.16 – 259.51 ± 0.21
|
|
Lopingian
|
|
Wuchiapingian
|
|
259.51 ± 0.21 – 254.14 ± 0.07
|
|
Changhsingian
|
|
254.14 ± 0.07 – 251.902 ± 0.024
|
|
Mesozoic
|
|
Triassic
|
|
Early
|
|
Induan
|
|
251.902 ± 0.024 – 249.9
|
|
Olenekian
|
|
249.9 – 246.7
|
|
Middle
|
|
Anisian
|
|
246.7 – 241.464 ± 0.28
|
|
Ladinian
|
|
241.464 ± 0.28 – ~237
|
|
Late
|
|
Carnian
|
|
~237 – ~227.3
|
|
Norian
|
|
~227.3 – ~205.7
|
|
Rhaetian
|
|
~205.7 – 201.4 ± 0.2
|
|
Jurassic
|
|
Early
|
|
Hettangian
|
|
201.4 ± 0.2 – 199.5 ± 0.3
|
|
Sinemurian
|
|
199.5 ± 0.3 – 192.9 ± 0.3
|
|
Pliensbachian
|
|
192.9 ± 0.3 – 184.2 ± 0.3
|
|
Toarcian
|
|
184.2 ± 0.3 – 174.7 ± 0.8
|
|
Middle
|
|
Aalenian
|
|
174.7 ± 0.8 – 170.9 ± 0.8
|
|
Bajocian
|
|
170.9 ± 0.8 – 168.2 ± 1.2
|
|
Bathonian
|
|
168.2 ± 1.2 – 165.3 ± 1.1
|
|
Callovian
|
|
165.3 ± 1.1 – 161.5 ± 1.0
|
|
Late
|
|
Oxfordian
|
|
161.5 ± 1.0 – 154.8 ± 0.8
|
|
Kimmeridgian
|
|
154.8 ± 0.8 – 149.2 ± 0.7
|
|
Tithonian
|
|
149.2 ± 0.7 – 143.1 ± 0.6
|
|
Cretaceous
|
|
Early
|
|
Berriasian
|
|
143.1 ± 0.6 – 137.05 ± 0.2
|
|
Valanginian
|
|
137.05 ± 0.2 – 132.6 ± 0.6
|
|
Hauterivian
|
|
132.6 ± 0.6 – 125.77
|
|
Barremian
|
|
125.77 – 121.4 ± 0.6
|
|
Aptian
|
|
121.4 ± 0.6 – 113.2 ± 0.3
|
|
Albian
|
|
113.2 ± 0.3 – 100.5 ± 0.1
|
|
Late
|
|
Cenomanian
|
|
100.5 ± 0.1 – 93.9 ± 0.2
|
|
Turonian
|
|
93.9 ± 0.2 – 89.8 ± 0.3
|
|
Coniacian
|
|
89.8 ± 0.3 – 85.7 ± 0.2
|
|
Santonian
|
|
85.7 ± 0.2 – 83.6 ± 0.2
|
|
Campanian
|
|
83.6 ± 0.2 – 72.2 ± 0.2
|
|
Maastrichtian
|
|
72.2 ± 0.2 – 66.0
|
|
Cenozoic
|
|
Tertiary
|
|
Paleogene
|
|
Paleocene
|
|
Danian
|
|
66.0 – 61.66
|
|
Selandian
|
|
61.66 – 59.24
|
|
Thanetian
|
|
59.24 – 56.00
|
|
Eocene
|
|
Ypresian
|
|
56.00 – 48.07
|
|
Lutetian
|
|
48.07 – 41.03
|
|
Bartonian
|
|
41.03 – 37.71
|
|
Priabonian
|
|
37.71 – 33.9
|
|
Oligocene
|
|
Rupelian
|
|
33.9 – 27.30
|
|
Chattian
|
|
27.30 – 23.04
|
|
Neogene
|
|
Miocene
|
|
Aquitanian
|
|
23.04 – 20.45
|
|
Burdigalian
|
|
20.45 – 15.98
|
|
Langhian
|
|
15.98 – 13.82
|
|
Serravallian
|
|
13.82 – 11.63
|
|
Tortonian
|
|
11.63 – 7.246
|
|
Messinian
|
|
7.246 – 5.333
|
|
Pliocene
|
|
Zanclean
|
|
5.333 – 3.600
|
|
Piacenzian
|
|
3.600 – 2.58
|
|
Quaternary
|
|
Pleistocene
|
|
Gelasian
|
|
2.58 – 1.80
|
|
Calabrian
|
|
1.80 – 0.774
|
|
Chibanian
|
|
0.7741 – 0.129
|
|
Late
|
|
0.129 – 0.0117
|
|
Holocene
|
|
Greenlandian
|
|
0.0117 – 0.0082
|
|
Northgrippian
|
|
0.0082 – 0.0042
|
|
Meghalayan
|
|
0.0042 – 0
|
