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Published online by Cambridge University Press: 01 May 2009
Professor Charles S. Prosser Geological Department, JL Union College, Schenectady, N.Y., having sent me some specimens of Estheria found in the Red Beds or Cimorron Series of Kansas, with the request that I would determine the species, my notes on them are here offered to the GeologicalMagazine, in which other fossil Estheriæ from North America have been illustrated and described.