HISTORY_5                                                                                                                                      

542,000,000 B.C. Phanerozoic Eon

  • Palaeozoic Era: 542 Ma
  • Mesozoic Era: 251 Ma
  • Tirassic Period
  • Jurassic Period
  • Cretaceous Period: extension of all land dinasours
  • Cenozoic Era: 65 Ma

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