Science, 1927, Fossil bearing rocks of the Grand Canyon: Science, new series, v. 65, 12 p., Suppl., Apr. 29. Authors Science Publication Date 1927 Citation Science, new series, v. 65, 12 p., Suppl., Apr. 29. State AZ Province CP TR County CN MO Keywords Paleontology More Keywords Paleontology, AzGeoBib RefNum 269