Ostrom, John H.2005-10-062005-10-061961http://hdl.handle.net/2246/1260p. 37-186, [6] p. of plates : ill., maps ; 27 cm.Thesis (Ph. D.)--Columbia University.Includes bibliographical references (p. 178-186).49429790 bytesapplication/pdfen-USQH1 .A4 vol.122, art.2, 1961Hadrosauridae.Skull.Dinosaurs -- North America.Reptiles, Fossil -- North America.Paleontology -- North America.Cranial morphology of the hadrosaurian dinosaurs of North America. Bulletin of the AMNH ; v. 122, article 2Hadrosaurian dinosaurstext