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The Quarterly journal of the Geological Society of London . of the can ton Glarus by Professor Heer Escher gives the fol lowing names in ascending order of all the strata of the ' Kreidebildungen Spatangus kalk Studer or Lower Neocomian Schratten kalk or Upper Neocomian TurrilitenEtageorGault Sewer kalk or chalk Nummuliten