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  1. A new phororhacoid bird from the Deseado formation of Patagonia / by Bryan Patterson. Results of the Marshall Field paleontological expeditions to Argentina and Bolivia, 1922-27.
    Publication info: Chicago :Field Museum of Natural History ,1941.
  2. Publication. Field Museum of Natural History.
    Publication info: Chicago, U.S.A. :The Museum,1910-1945.