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General Information

  • Title: The geologic time classification of the United States Geological Survey compared with other classifications accompanied by the original definitions of Era, Period, and Epoch terms
  • Author(s): Wilmarth, M.G.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Bulletin 769
  • Publication Date: 1925
  • Cross Section: None
  • North Latitude: 49° 0' 0" N (49.0000)
  • South Latitude: 25° 0' 0" N (25.0000)
  • East Longitude: 66° 56' 4" W (-66.9344)
  • West Longitude: 124° 45' 0" W (-124.7500)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.