Definitions

cambrian explosion

Cambrian explosion/Timeline

Key Cambrian Explosion events
(millions of years ago)
ImageSize = width:250 height:770 PlotArea = left:40 right:105 bottom:135 top:5 AlignBars = justify

Period = from:-585 till:-490 TimeAxis = orientation:vertical ScaleMajor = unit:year increment:10 start:-580 ScaleMinor = unit:year increment:5 start:-580

Colors =

 id:cambrian  value:rgb(1,1,0.7) legend:Cambrian_Period  # light yellow
 id:precambrian  value:rgb(0.8,1,0.8) legend:Pre-Cambrian  # green
 id:period  value:rgb(1,0.7,0.7)  legend:Epoch_/_Stage  # light red
 id:black  value:black

Legend = left:5 top:125

BarData =

 barset:cambrian
 barset:precambrian
 bar:period

PlotData=

 width:0.3
 align:center textcolor:black mark:(line,black)

 barset:precambrian color:precambrian
 width:100
 from:-585  till:-542

 barset:cambrian color:cambrian
 width:95
 from:-542  till:-490

 bar:period color:period
 width:95

 from:start  till:-542  text:Ediacaran
 from:-542  till:-534  text:Nemakit-Daldynian
 from:-534  till:-530  text:Tommotian
 from:-530  till:-524  text:Atdabanian
 from:-524  till:-518.5  text:Botomian
 from:-518.5  till:-513  text:Toyonian
 from:-513  till:-501  text:Middle Cambrian
 from:-501  till:-490  text:Upper Cambrian
 at:-499  mark:(line,red) shift:(100,-4) text:Orsten Fauna
 at:-505  mark:(line,red) shift:(100,-4) text:Burgess Shale
 at:-518  mark:(line,red) shift:(100,-4) text:Sirius Passet Fauna
 at:-523  mark:(line,red) shift:(100, -4) text:Chengjiang Fauna
 at:-529.9  mark:(line,red) shift:(100,0) text:First Trilobites
 at:-530  shift:(100, -10) text:and Echinoderms
 at:-533.8  mark:(line,red) shift:(100,0) text:First Arthropod
 at:-534  shift:(100,-10) text:trace fossils
 at:-555  shift:(100,-10) text:trace fossils
 at:-555  mark:(line,red) shift:(100,0) text:First Bilaterian
 at:-575  mark:(line,red) shift:(100,-4) text:First Ediacaran fossils
 at:-583.8  mark:(line,red) shift:(100,1) text:Doushantuo embryos
 at:-584.2  mark:(line,red) shift:(100,-10) text:Last global glaciations


TextData =
 fontsize:10
  pos:(8,62)
  text:"One_possible_time-scale_of_events_around"
  pos:(8,47)
  text:"the_Cambrian_/_Pre-cambrian_boundary."
  pos:(8,32)
  text:"Note_that_the_Ediacaran_starts_at_630Ma."


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