Natural.World

• Palaeozoic era
  • - Silurian period
  • - Devonian period
  • - Carboniferous period
  • - Permian period
• Mesozoic era
  • - Triassic period
  • - Jurassic period
  • - Cretaceous period
• Cenozoic era
  • - Tertiary period
  • - Pleistocene epoch
  • - Holocene epoch

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