International Chronostratigraphic Chart

Can you name all the supereons, eons, eras, periods, epochs, and ages of the geologic column as according to the International Commission on Stratigraphy?

The age given for 'Ma' refers to the beginning of the unit

Data accurate as of v 2022/10

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Last updated: January 19, 2023

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First submitted	October 28, 2022
Times taken	146
Average score	25.9%
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Supereon

Eon (Eonothem)

Era (Erathem)

Period (System)

Subperiod (Subsystem)

Epoch (Series)

Sub-epoch (Sub-series)

Age (Stage)

Precambrian

Hadaean

4567

Archaean

Eoarchaean

4000

Palaeoarchaean

3600

Mesoarchaean

3200

Neoarchaean

2800

Proterozoic

Palaeoproterozoic

Siderian

2500

Rhyacian

2300

Orosirian

2050

Statherian

1800

Mesoproterozoic

Calymmian

1600

Ectasian

1400

Stenian

1200

Neoproterozoic

Tonian

1000

Cryogenian

~720

Ediacaran

~635

Phanerozoic

Palaeozoic

Cambrian

Terreneuvian

Fortunian

538±0.2

Stage 2

~529

Series 2

Stage 3

~521

Stage 4

~514

Miaolingian

Wuliuan

~509

Drumian

~504.5

Guzhangian

~500.5

Furongian

Paibian

~497

Jiangshanian

~494

Stage 10

~489.5

Ordovician

Lower

Tremadocian

485.4±1.9

Floian

477.7±1.4

Middle

Dapingian

470.0±1.4

Darriwilian

467.3±1.1

Upper

Sandbian

458.4±0.9

Katian

453.0±0.7

Hirnantian

445.2±1.4

Silurian

Llandovery

Rhuddanian

443.8±1.5

Aeronian

440.8±1.5

Telychian

438.5±1.1

Wenlock

Sheinwoodian

433.4±0.8

Homerian

430.5±0.7

Ludlow

Gorstian

427.4±0.5

Ludfordian

425.6±0.9

Pridoli

423.0±2.3

Devonian

Lower

Lochkovian

419.2±3.2

Pragian

410.8±2.8

Emsian

407.6±2.6

Middle

Eifelian

393.3±1.2

Givetian

387.7±0.8

Upper

Frasnian

382.7±1.6

Famennian

372.2±1.6

Carboniferous

Mississippian

Lower

Tournaisian

358.9±0.4

Middle

Visean

346.7±0.4

Upper

Serpukhovian

330.9±0.2

Pennsylvanian

Lower

Bashkirian

323.2±0.4

Middle

Moscovian

315.2±0.2

Upper

Kasimovian

307.0±0.1

Gzhelian

303.7±0.1

Permian

Cisuralian

Asselian

298.9±0.15

Sakmarian

293.52±0.17

Artinskian

290.1±0.26

Kungurian

283.5±0.6

Guadalupian

Roadian

273.01±0.14

Wordian

266.9±0.4

Capitanian

264.28±0.16

Lopingian

Wuchiapingian

259.51±0.21

Changhsingian

254.14±0.07

Mesozoic

Triassic

Lower

Induan

251.902±0.024

Olenekian

251.2

Middle

Anisian

247.2

Ladinian

~242

Upper

Carnian

~237

Norian

~227

Rhaetian

~208.5

Jurassic

Lower

Hettangian

201.4±0.2

Sinemurian

199.5±0.3

Pliensbachian

192.9±0.3

Toarcian

184.2±0.3

Middle

Aalenian

174.7±0.8

Bajocian

170.9±0.8

Bathonian

168.2±1.2

Callovian

165.3±1.1

Upper

Oxfordian

161.5±1.0

Kimmeridgian

154.8±0.8

Tithonian

149.2±0.7

Cretaceous

Lower

Berriasian

~145

Valanginian

~139.8

Hauterivian

~132.6

Barremian

~129.4

Aptian

~121.4

Albian

~113.0

Upper

Cenomanian

100.5

Turonian

93.9

Coniacian

89.8±0.3

Santonian

86.3±0.5

Campanian

83.6±0.2

Maastrichtian

72.1±0.2

Caenozoic

Palaeogene

Palaeocene

Danian

66.0

Selandian

61.6

Thanetian

59.2

Eocene

Ypresian

56.0

Lutetian

47.8

Bartonian

41.2

Priabonian

37.71

Oligocene

Rupelian

33.9

Chattian

27.82

Neogene

Miocene

Early

Aquitanian

23.03

Burdigalian

20.44

Middle

Langhian

15.97

Serravallian

13.82

Late

Tortonian

11.63

Messinian

7.246

Pliocene

Early

Zanclean

5.333

Late

Piacenzian

3.600

Quaternary

Pleistocene

Early

Gelasian

2.58

Calabrian

1.80

Middle

Chibanian

0.774

Late

Upper

0.129

Holocene

Early

Greenlandian

0.0117

Middle

Northgrippian

0.0082

Late

Meghalayan

0.0042

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