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Official Colors?

Should we adapt the official colors from the International Commission of stratigraphy? You can put your comment below, yes or no and/or reason for yes and no. 24.218.110.195 (talk) 21:48 08 April 2013 (UTC) 5:48pm 04/08/2013 EDT.

No, I think not: it looks good as it is. On a screen (as opposed to a wallchart) it's best not to get too fancy. Thank you very much for doing the work! Macdonald-ross (talk) 07:08, 9 April 2013 (UTC)
Here is what it'll look like with official colors. It is very similar the ones on English Wikipedia. I show it below my comment. And for here I autocollapse the table 24.218.110.195 (talk) 3:00 16 April 2013 (UTC) 11:00pm 04/15/2013 EDT.
No. The colours distract attention from where it should be, the text, to the chart. Charts should not dominate the page. It's time to leave this alone and move on. Macdonald-ross (talk) 04:40, 16 April 2013 (UTC)
I see that the color template Template:Period color was suppose to be for colors of geology (geologic time) articles. It contains the colors (code) for every geologic time including stages such as Phanerozoic ,Kimmeridgian ,Precambrian ,Cenozoic ,Tonian, Lopingian and much more. Right now no geology articles or geology templates use this excluding talk pages. In fact no articles use this template at all. 24.218.110.195 (talk) 13:14 16 April 2013 (UTC) 9:14am 04/16/2013 EDT.
NOTE:The small collapsed tables will only be seen properly if all are shown or not. 24.218.110.195 (talk) 0:38 28 April 2013 (UTC) 8:38pm 04/28/2013 EDT.

<timeline> ImageSize = width:800 height:120 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:phanerozoic value:rgb(0.435,0.85,0.866)
 id:cenozoic value:rgb(0.949,0.976,0.113)
 id:quaternary value:rgb(0.976,0.976,0.498)
 id:neogene value:rgb(1,0.901,0.098)
 id:paleogene value:rgb(0.992,0.603,0.321)
 id:mesozoic value:rgb(0.403,0.772,0.792)
 id:cretaceous value:rgb(0.498,0.776,0.306)
 id:jurassic value:rgb(0.203,0.698,0.788)
 id:triassic value:rgb(0.505,0.168,0.572)
 id:paleozoic value:rgb(0.6,0.752,0.552)
 id:permian value:rgb(0.941,0.25,0.156)
 id:carboniferous value:rgb(0.403,0.647,0.6)
 id:devonian value:rgb(0.796,0.549,0.215)
 id:silurian value:rgb(0.702,0.882,0.713)
 id:ordovician value:rgb(0,0.572,0.439)
 id:cambrian value:rgb(0.496,0.627,0.337)
 id:precambrian value:rgb(0.968,0.262,0.439)
 id:proterozoic value:rgb(0.968,0.207,0.388)
 id:neoproterozoic value:rgb(0.996,0.701,0.258)
 id:ediacaran value:rgb(0.996,0.85,0.415)
 id:cryogenian value:rgb(0.996,0.8,0.36)
 id:tonian value:rgb(0.996,0.75,0.305)
 id:mesoproterozoic value:rgb(0.996,0.705,0.384)
 id:stenian value:rgb(0.996,0.85,0.604)
 id:ectasian value:rgb(0.996,0.8,0.541)
 id:calymmian value:rgb(0.996,0.75,0.478)
 id:paleoproterozoic value:rgb(0.968,0.263,0.44)
 id:statherian value:rgb(0.968,0.459,0.655)
 id:orosirian value:rgb(0.968,0.408,0.596)
 id:rhyacian value:rgb(0.968,0.357,0.537)
 id:siderian value:rgb(0.968,0.306,0.478)
 id:archean value:rgb(0.996,0.157,0.498)
 id:neoarchean value:rgb(0.976,0.608,0.757)
 id:mesoarchean value:rgb(0.968,0.408,0.662)
 id:paleoarchean value:rgb(0.96,0.266,0.624)
 id:eoarchean value:rgb(0.902,0.114,0.549)
 id:hadean value:rgb(0.717,0,0.494)
 id:black value:black
 id:white value:white

Period = from:-4567 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:500 start:-4500 ScaleMinor = unit:year increment:100 start:-4500

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:supereon
 from: start till: -542 text:Precambrian color:precambrian


 bar:eon
 at:       0 align:right $markred
 at:    -542 align:left  $markred shift:(2,3)
 from:  -542 till:    0  text:Phanerozoic color:phanerozoic   
 from: -2500 till: -542  text:Proterozoic color:proterozoic   
 from: -4000 till: -2500 text:Archaean     color:archean   
 from: start till: -4000 text:Hadean      color:hadean


 bar:era
 from: -65.5 till: 0     text:C color:cenozoic        
 from: -251  till: -65.5 text:Meso color:mesozoic        
 from: -542  till: -251  text:Palaeozoic color:paleozoic 
 from: -1000 till: -542  text:Neoproterozoic color:neoproterozoic   
 from: -1600 till: -1000 text:Mesoproterozoic color:mesoproterozoic  
 from: -2500 till: -1600 text:Palaeoproterozoic color:paleoproterozoic
 from: -2800 till: -2500 text:Neoarch color:neoarchean       
 from: -3200 till: -2800 text:Mesoarch color:mesoarchean      
 from: -3600 till: -3200 text:Paleoarch color:paleoarchean     
 from: -4000 till: -3600 text:Eoarchaean color:eoarchean
 from: start till: -4000 color:white
 bar:period
 fontsize:6
 from: -2.6 till: 0        color:quaternary
 from: -23.03 till: -2.6   color:neogene
 from: -65.5 till: -23.03  color:paleogene
 from: -145.5 till: -65.5  color:cretaceous
 from: -199.6 till: -145.5 color:jurassic
 from: -251 till: -199.6   color:triassic
 from: -299 till: -251     color:permian
 from: -359.2 till: -299   color:carboniferous
 from: -416 till: -359.2   color:devonian
 from: -443.7 till: -416   color:silurian
 from: -488.3 till: -443.7 color:ordovician
 from: -542 till: -488.3   color:cambrian
 from: -630  till: -542  text:Ed. color:ediacaran
 from: -850  till: -630  text:Cryo color:cryogenian
 from: -1000 till: -850  text:Tonian color:tonian
 from: -1200 till: -1000 text:Stenian color:stenian
 from: -1400 till: -1200 text:Ectasian color:ectasian
 from: -1600 till: -1400 text:Calymm color:calymmian
 from: -1800 till: -1600 text:Stather color:statherian
 from: -2050 till: -1800 text:Orosirian color:orosirian
 from: -2300 till: -2050 text:Rhyacian color:rhyacian
 from: -2500 till: -2300 text:Siderian color:siderian
 from: start till: -2500 color:white

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:phanerozoic value:rgb(0.435,0.85,0.866)
 id:cenozoic value:rgb(0.949,0.976,0.113)
 id:quaternary value:rgb(0.976,0.976,0.498)
 id:neogene value:rgb(1,0.901,0.098)
 id:paleogene value:rgb(0.992,0.603,0.321)
 id:mesozoic value:rgb(0.403,0.772,0.792)
 id:cretaceous value:rgb(0.498,0.776,0.306)
 id:jurassic value:rgb(0.203,0.698,0.788)
 id:triassic value:rgb(0.505,0.168,0.572)
 id:paleozoic value:rgb(0.6,0.752,0.552)
 id:permian value:rgb(0.941,0.25,0.156)
 id:carboniferous value:rgb(0.403,0.647,0.6)
 id:devonian value:rgb(0.796,0.549,0.215)
 id:silurian value:rgb(0.702,0.882,0.713)
 id:ordovician value:rgb(0,0.572,0.439)
 id:cambrian value:rgb(0.496,0.627,0.337)
 id:black  value:black
 id:white  value:white
 id:darkgreen value:rgb(0,0.35,0)

Period = from:-542 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:100 start:-500 ScaleMinor = unit:year increment:10 start:-540

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10 Define $markgreen = text:"*" textcolor:darkgreen shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:eon
 at:      0   align:right  $markred 
 at:   -542   align:left   $markred shift:(2,3)
 from: -542   till:    0   text:Phanerozoic color:phanerozoic
 bar:era
 at:   0     align:right $markgreen
 at:   -65.5 align:left  $markgreen shift:(2,3)
 from: -65.5 till: 0     text:Cainozoic color:cenozoic
 from: -251  till: -65.5 text:Mesozoic color:mesozoic
 from: -542  till: -251  text:Palaeozoic color:paleozoic
 bar:period fontsize:8
 from: -2.588 till: 0 text:Q. color:quaternary
 from: -23.03 till: -2.588 text:Neo color:neogene
 from: -65.5 till: -23.03 text:Palaeogene color:paleogene
 from: -145.5 till: -65.5 text:Cretaceous color:cretaceous
 from: -199.6 till: -145.5 text:Jurassic color:jurassic
 from: -251.4 till: -199.6 text:Triassic color:triassic
 from: -299 till: -251.4 text:Permian color:permian
 from: -359.2 till: -299 text:Carboniferous color:carboniferous
 from: -416 till: -359.2 text:Devonian color:devonian
 from: -443.7 till: -416 text:Silurian color:silurian
 from: -488.3 till: -443.7 text:Ordovician color:ordovician
 from: -542 till: -488.3 text:[[Cambrian] color:cambrian

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:cenozoic value:rgb(0.949,0.976,0.113)
 id:quaternary value:rgb(0.976,0.976,0.498)
 id:holocene value:rgb(0.996,0.949,0.878)
 id:pleistocene value:rgb(1,0.949,0.678)
 id:neogene value:rgb(1,0.901,0.098)
 id:pliocene value:rgb(1,1,0.6)
 id:miocene value:rgb(1,1,0)
 id:paleogene value:rgb(0.992,0.603,0.321)
 id:oligocene value:rgb(0.992,0.752,0.478)
 id:eocene value:rgb(0.992,0.705,0.423)
 id:paleocene value:rgb(0.992,0.654,0.372)
 id:black value:black
 id:white value:white
 id:darkgreen value:rgb(0,0.35,0)

Period = from:-65.5 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:10 start:-60 ScaleMinor = unit:year increment:1 start:-65

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10 Define $markgreen = text:"*" textcolor:darkgreen shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:era
 at:     0  align:right $markgreen 
 at: start  align:left  $markgreen shift:(2,3)
 from:start till:  0    text:Cainozoic color:cenozoic
 bar:period
 from: -2.588 till: 0 text:Q color:quaternary
 from: -23.03 till: -2.588 text:Neogene color:neogene
 from: start  till: -23.03 text:Palaeogene color:paleogene
 bar:epoch
 from: -0.1 till: 0  text:H color:holocene 
 from: -2.588 till: -0.1 text:P color:pleistocene
 from: -5.332 till: -2.588 text:Pliocene color:pliocene
 from: -23.03 till: -5.332 text:Miocene color:miocene
 from: -33.9 till: -23.03 text:Oligocene color:oligocene
 from: -55.8 till: -33.9 text:Eocene color:eocene
 from: start till: -55.8 text:Palaeocene color:paleocene

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:mesozoic value:rgb(0.403,0.772,0.792)
 id:cretaceous value:rgb(0.498,0.776,0.306)
 id:uppercretaceous value:rgb(0.651,0.847,0.29)
 id:lowercretaceous value:rgb(0.549,0.803,0.341)
 id:jurassic value:rgb(0.203,0.698,0.788)
 id:upperjurassic value:rgb(0.702,0.890,0.933)
 id:middlejurassic value:rgb(0.502,0.812,0.847)
 id:lowerjurassic value:rgb(0.259,0.682,0.815)
 id:triassic value:rgb(0.505,0.168,0.572)
 id:uppertriassic value:rgb(0.753,0.549,0.753)
 id:middletriassic value:rgb(0.694,0.412,0.694)
 id:lowertriassic value:rgb(0.6,0.223,0.6)
 id:epoch value:rgb(1,1,1)	
 id:black value:black
 id:white value:white
 id:darkgreen value:rgb(0,0.35,0)

Period = from:-251 till:-66 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:50 start:-250 ScaleMinor = unit:year increment:10 start:-250

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10 Define $markgreen = text:"*" textcolor:darkgreen shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:era
 from:start till: -66 text:Mesozoic color:mesozoic
 bar:period
 from: -145 till: -66 text:Cretaceous color:cretaceous
 from: -199 till: -145 text:Jurassic color:jurassic
 from: start till: -199 text:Triassic color:triassic
 bar:epoch
 from: -100 till: -66 text:Upper color:uppercretaceous
 from: -145 till: -100 text:Lower color:lowercretaceous
 from: -163 till: -145 text:Upper color:upperjurassic
 from: -174 till: -163 text:Middle color:middlejurassic
 from: -199 till: -174 text:Lower color:lowerjurassic
 from: -237 till: -199 text:Upper color:uppertriassic
 from: -247 till: -237 text:Middle color:middletriassic
 from: start till: -247 text:Lower color:lowertriassic

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:paleozoic value:rgb(0.6,0.752,0.552)
 id:permian value:rgb(0.941,0.25,0.156)
 id:carboniferous value:rgb(0.403,0.647,0.6)
 id:pennsylvanian value:rgb(0.6,0.761,0.71)
 id:mississippian value:rgb(0.404,0.561,0.404)
 id:devonian value:rgb(0.796,0.549,0.215)
 id:silurian value:rgb(0.702,0.882,0.713)
 id:ordovician value:rgb(0,0.572,0.439)
 id:cambrian value:rgb(0.496,0.627,0.337)	
 id:black value:black
 id:white value:white
 id:darkgreen value:rgb(0,0.35,0)

Period = from:-542 till:-251 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:50 start:-500 ScaleMinor = unit:year increment:10 start:-540

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10 Define $markgreen = text:"*" textcolor:darkgreen shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:era
 from:start till: -251 text:Palaeozoic color:paleozoic
 bar:period
 from: -299 till: -251 text:Permian color:permian
 from: -359 till: -299 text:Carboniferous color:carboniferous
 from: -416 till: -359 text:Devonian color:devonian
 from: -443 till: -416 text:Silurian color:silurian
 from: -488 till: -443 text:Ordovician color:ordovician
 from: -542 till: -488 text:Cambrian color:cambrian
 bar:epoch
 from: -299 till: -251 color:permian
 from: -323 till: -299 text:Pennsylvanian color:pennsylvanian
 from: -359 till: -323 text:Mississippian color:mississippian
 from: -299 till: -251 color:permian
 from: -416 till: -359 color:devonian
 from: -443 till: -416 color:silurian
 from: -488 till: -443 color:ordovician
 from: -542 till: -488 color:cambrian

</timeline>

<timeline> ImageSize = width:800 height:100 PlotArea = left:65 right:15 bottom:20 top:5 AlignBars = justify

Colors =

 id:phanerozoic value:rgb(0.435,0.85,0.866)
 id:cenozoic value:rgb(0.949,0.976,0.113)
 id:quaternary value:rgb(0.976,0.976,0.498)
 id:neogene value:rgb(1,0.901,0.098)
 id:paleogene value:rgb(0.992,0.603,0.321)
 id:mesozoic value:rgb(0.403,0.772,0.792)
 id:cretaceous value:rgb(0.498,0.776,0.306)
 id:jurassic value:rgb(0.203,0.698,0.788)
 id:triassic value:rgb(0.505,0.168,0.572)
 id:paleozoic value:rgb(0.6,0.752,0.552)
 id:permian value:rgb(0.941,0.25,0.156)
 id:carboniferous value:rgb(0.403,0.647,0.6)
 id:devonian value:rgb(0.796,0.549,0.215)
 id:silurian value:rgb(0.702,0.882,0.713)
 id:ordovician value:rgb(0,0.572,0.439)
 id:cambrian value:rgb(0.496,0.627,0.337)
 id:proterozoic value:rgb(0.968,0.207,0.388)
 id:neoproterozoic value:rgb(0.996,0.701,0.258)
 id:ediacaran value:rgb(0.996,0.85,0.415)
 id:cryogenian value:rgb(0.996,0.8,0.36)
 id:tonian value:rgb(0.996,0.75,0.305)
 id:black value:black
 id:white value:white

Period = from:-1000 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:100 start:-900 ScaleMinor = unit:year increment:10 start:-990

Define $markred = text:"*" textcolor:red shift:(0,3) fontsize:10

PlotData=

 align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 bar:eon
 at: 0 align:right $markred
 at: -542 align:left $markred shift:(2,3)
 from: -542 till: 0 text:Phanerozoic color:phanerozoic
 from: -1000 till: -542 text:Proterozoic color:proterozoic
 bar:era
 from: -66 till: 0 text:Cainozoic color:cenozoic
 from: -251 till: -66 text:Mesozoic color:mesozoic
 from: -542 till: -251 text:Palaeozoic color:paleozoic
 from: -1000 till: -542 text:Neoproterozoic color:neoproterozoic
 bar:period
 from: -2.588 till: 0 text:Q color:quaternary
 from: -23 till: -2.588 text:N color:neogene
 from: -66 till: -23 text:Pg color:paleogene
 from: -145 till: -66 text:K color:cretaceous
 from: -199 till: -145 text:J color:jurassic
 from: -251 till: -199 text:T color:triassic
 from: -299 till: -251 text:P color:permian
 from: -359 till: -299 text:C color:carboniferous
 from: -416 till: -359 text:D color:devonian
 from: -443 till: -416 text:S color:silurian
 from: -488 till: -443 text:O color:ordovician
 from: -542 till: -488 text: color:cambrian
 from: -635 till: -542 text:Ediacaran color:ediacaran
 from: -850 till: -635 text:Cryogenian color:cryogenian
 from: -1000 till: -850 text:Tonian color:tonian

</timeline>

Precambrian
Supereon Eon Era Start
Billion
years
ago
Precambrian Proterozoic Palaeoproterozoic 2.5
Archaean Neoarchaean 2.8
Mesoarchaean 3.2
Palaeoarchaean 3.6
Eoarchaean 4
Hadean 4.567
Phanerozoic
Eon Era Period Start
Million
years
ago
Phanerozoic Cainozoic Quaternary 2.588
Tertiary Neogene 23.03
Palaeogene 66
Mesozoic Cretaceous 145
Jurassic 201.3
Triassic 252.17
Palaeozoic Permian 298.9
Carboniferous 358.9
Devonian 419.2
Silurian 443.4
Ordovician 485.4
Cambrian 541
Proterozoic Neoproterozoic Ediacaran 635
Proterozoic
Supereon Eon Era Period Start
Billion
years
ago
Phanerozoic Palaeozoic Cambrian 0.541
Precambrian Proterozoic Neoproterozoic Ediacaran 0.635
Cryogenian 0.85
Tonian 1
Mesoproterozoic Stenian 1.2
Ectasian 1.4
Calymmian 1.6
Palaeoproterozoic Statherian 1.8
Orosirian 2.05
Rhyacian 2.3
Siderian 2.5
Archaean Neoarchaean 2.8
Geologic time
Supereon Eon Era Period/Age4,5 Epoch Major Events Years Ago3,6
Phanerozoic Cainozoic Quaternary Holocene 11,700
Pleistocene First ice age the Cainozoic. Ice and Glaciers spread all over the poles. 2.588 million
Tertiary Neogene Pliocene 5.333 million
Miocene 23.03 million
Palaeogene Oligocene 33.9 million
Eocene 56 million
Palaeocene 66 million
Mesozoic Cretaceous Upper Cretaceous 100.5 million
Lower Cretaceous 145 million
Jurassic Upper Jurassic 163.5 million
Middle Jurassic 174.1 million
Lower Jurassic 201.3 million
Triassic Upper Triassic 237 million
Middle Triassic 247.2 million
Lower Triassic 252.17 million
Palaeozoic Permian 298.9 million
Carboniferous Pennsylvanian 323.2 million
Mississippian 358.9 million
Devonian 419.2 million
Silurian 443.4 million
Ordovician 485.4 million
Cambrian 541 million
Precambrian Proterozoic Neoproterozoic2 Ediacaran 635 million
Cryogenian 850 million
Tonian 1,000 million
Mesoproterozoic Stenian 1,200 million
Ectasian 1,400 million
Calymmian 1,600 million
Palaeoproterozoic Statherian 1,800 million
Orosirian 2,050 million
Rhyacian 2,300 million
Siderian 2,500 million
Archaean Neoarchaean 2,800 million
Mesoarchaean 3,200 million
Palaeoarchaean 3,600 million
Eoarchaean 4,000 million
Hadean 4,567 million
  1. In North America, the Carboniferous is subdivided into Mississippian and Pennsylvanian sub-periods or epochs.
  2. Discoveries in the past quarter century have substantially changed the view of geologic and paleontologic events just before the Cambrian. The term Neoproterozoic is used now, but older writers might have used 'Ediacaran', 'Vendian', 'Varangian', 'Precambrian', 'Protocambrian', 'Eocambrian', or might have extended the Cambrian further back in time.
  3. Dates are slightly uncertain, and differences of a few percent between sources are common. This is because deposits suitable for radiometric dating seldom occur exactly at the places in the geologic column where we would most like to have them. Dates with an * are radiometrically determined based on internationally agreed GSSPs.
  4. Paleontologists often refer to faunal stages rather than geologic periods. The faunal stage nomenclature is quite complex. See http://flatpebble.nceas.ucsb.edu/public/harland.html for an excellent time ordered list of faunal stages.
  5. In common usage the Tertiary-Quaternary and Palaeogene-Neogene-Quaternary are treated as periods. The term 'age' (e.g. 'Neogene Age') is sometimes used instead of 'period'.
  6. The time shown in the "Years Ago" column is that of the start of the Epoch in the "Epoch" column.
Precambrian (4.567 gya – 541 mya)
In the left column are Eons, bold are Eras, not bold are Periods. gya = billion years ago, mya = million years ago
Hadean (4.567 gya – 4 gya)
Archaean (4 gya – 2.5 gya) Eoarchaean (2.5 gya – 1.6 gya)

Palaeoarchaean (2.5 gya – 1.6 gya)

Mesoarchaean (2.5 gya – 1.6 gya)

Neoarchaean (2.5 gya – 1.6 gya)

Proterozoic (4 gya – 2.5 gya) Palaeoproterozoic (2.5 gya – 1.6 gya) Siderian (2.5 gya – 2.3 gya) Rhyacian (2.3 gya – 2.05 gya) Orosirian (2.05 gya – 1.8 gya) Statherian (1.8 gya – 1.6 gya)

Mesoproterozoic (1.6 gya – 1 gya) Calymmian (1.6 gya – 1.4 gya) Ectasian (1.4 gya – 1.2 gya) Stenian (1.2 gya – 1 gya)

Neoproterozoic (1 gya - 541 mya) Tonian (1 gya – 850 mya) Cryogenian (850 mya – 635 mya) Ediacaran (635 mya – 541 mya)

Phanerozoic (541 mya – today)
In the left column are Eras, bold are Periods, not bold or italics are Epochs, Italics are stages. kya = thousand years ago, mya = million years ago
Palaeozoic (541 mya – 252.17 mya) Cambrian (541 mya – 485.4 mya)

Ordovician (485.4 mya – 443.4 mya)

Silurian (443.4 mya – 419.2 mya)

Devonian (419.2 mya – 358.9 mya)

Carboniferous (358.9 mya – 298.9 mya) Mississippian (358.9 mya – 323.2 mya) Pennsylvanian (323.2 mya – 298.9 mya)

Permian (298.9 mya – 252.17 mya)

Mesozoic (252.17 mya – 66.0 mya) Triassic (252.17 mya – 201.3 mya) Lower Triassic (252.17 mya – 247.2 mya) Middle Triassic (247.2 mya – 237 mya) Upper Triassic (237 mya – 201.3 mya)

Jurassic (201.3 mya – 145 mya) Lower Jurassic (201.3 mya – 174.1 mya) Middle Jurassic (174.1 mya – 163.5 mya) Upper Jurassic (163.5 mya – 145 mya) Kimmeridgian (157.3–152.1 mya)

Cretaceous (145 mya – 66.0 mya) Lower Cretaceous (145 mya – 100.5 mya) Upper Cretaceous (100.5 mya – 66.0 mya)

Cainozoic (66.0 mya – today)

Tertiary (66.0 mya – 2.588 mya)

Palaeogene (66.0 mya – 23.03 mya) Palaeocene (66.0 mya – 56 mya) Eocene (56 mya - 33.9 mya) Oligocene (33.9 mya – 23.03 mya)

Neogene (23.03 mya – 2.588 mya) Miocene (23.03 mya – 5.333 mya) Pliocene (5.333 mya – 2.588 mya)

Quaternary (2.588 mya – today) Pleistocene (2.588 mya – 11.7 kya) Holocene (11.7 kya - today)

Source International Chronostratigraphic Chart 2013. International Commission on Stratigraphy, retrieved 8 April 2013. Divisions of geologic time – major chronostratigraphic and geochronologic units USGS, retrieved 8 April 2013.