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EARTH SCIENCE

Platte Canyon High School
Bailey, Colorado

Time Scale

GEOLOGIC TIME SCALE

Cambrian

after Harland et al., 1982

  =========================================================
Period Epoch Age Ma age Comments
      505  
Cambrian Merioneth Dolgellian    
Maentwrogian 523  
St. David's Menevian    
Solvan 540  
Caerfai Lenian    
Atdabanian    
Tommotian 590