Simpson, George Gaylord, 1902-2005-10-052005-10-051937http://hdl.handle.net/2246/367p. 727-763 : ill. ; 24 cm.Includes bibliographical references (p. 762-763).8500313 bytesapplication/pdfen-USQH1 .A4 vol.73, art.8, 1937Multituberculata -- Anatomy.Skull -- Anatomy.Ptilodus.Mammals, Fossil.Skull structure of the Multituberculata. Bulletin of the AMNH ; v. 73, article 8.Skull structure of Multituberculatatext