Individual #Paleozoic_era__Paleozoic  from 230 million to about 544 million years ago
  part:  #Permian_period  #Carboniferous_period  #Devonian_period  #Silurian_period  #Ordovician_period  #Cambrian_period
  type:  #geological_era__era  a major division of geological time; an era is usually divided into two or more periods

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