Template:Natural history (Septentrion) graphical timeline

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Septentrion natural history
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Septentrion accreting
 
Archaean
 
Paleoproterozoic
Mesoproterozoic
 
Tonian
Cryogenian
Halifaxian
 
 
 
Hathawagnian
Lecherntian
Anglian
Lyncastrian
Carboniferous
Permian
Triassic
Chervassic
Cretateous
Palaeogene
Neogene
Quarternary
←
Septentrion forms
←
First biological traces
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Liquid water
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Cellular life
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Photosynthesis & oxygen
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Oxygen in atmosphere & sea
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Sol forms
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Eukaryotic cells
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Earliest algae
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Earliest metazoan
 Phaenerozoic
 Proterozoic
 Neoproterozoic
 Palaeozoic
 Mesozoic
 Caenozoic
List of major events in the natural history of Septentrion
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