Osborn, Henry Fairfield, 1857-1935.Matthew, William Diller, 1871-1930.Granger, Walter, 1872-1941.National Academy of Sciences (U.S.)2005-10-062005-10-061907http://hdl.handle.net/2246/1485p. 237-253, [1] folded leaf of plates : ill. ; 24 cm.Includes bibliographical references.2143760 bytesapplication/pdfen-USQH1 .A4 vol.23, art.11, 1907Paleontology -- Tertiary -- West (U.S.)Paleontology -- Tertiary -- North America.Paleontology -- West (U.S.)Paleontology -- North America.Mammals, Fossil -- West (U.S.)Mammals, Fossil -- North America.Geology, Stratigraphic -- Tertiary.Geology, Stratigraphic -- Pleistocene.Paleontology -- Cenozoic -- West (U.S.)Paleontology -- Cenozoic -- North America.Stratigraphic correlation -- West (U.S.)Stratigraphic correlation -- North America.text