Simplified Phanerozoic time scale

Era Duration in Ma

Period Duration in Ma

Tid in Ma
Cenozoic 65 Quaternary 1,64 0-1,64
  Tertiary 63 1,64-65
  Cretaceous 81 65-146
Mesozoic 180 Jurassic 62 146-208
  Triassic 37 208-245
  Permian 45 245-290
  Carboniferous 73 290-363
Paleozoic 325 Devonian 46 363-409
  Silurian 30 409-439
  Ordovician 71 439-510
  Cambrian 60 510-570
Page updated: 2009-03-30
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