Bible Dictionaries
Potsdam Group
Webster's Dictionary
A subdivision of the Primordial or Cambrian period in American geology; - so named from the sandstone of Potsdam, New York. See Chart of Geology.
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Bibliography Information
Webster, Noah. Entry for 'Potsdam Group'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/p/potsdam-group.html. 1828.