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EARTH SCIENCE

Platte Canyon High School
Bailey, Colorado

Time Scale

GEOLOGIC TIME SCALE

Silurian

after Harland et al., 1982

  =========================================================
Period Epoch Age Ma age Comments
      408  
Silurian Pridoli   414  
Ludlow Ludfordian    
Gorstian 421  
Wenlock Gleedon    
Whitwell    
Sheinwoodian 428  
Llandovery Telychian    
Fronian    
Idwian    
Rhuddanian 438