On Protoceratops, a primitive ceratopsian dinosaur from the Lower Cretaceous of Mongolia. American Museum novitates ; no. 156

Gregory, William K. (William King), 1876-Mook, Charles Craig, 1887-1966.Central Asiatic Expeditions (1921-1930)2005-10-062005-10-061925http://hdl.handle.net/2246/45159 p. : ill. ; 23 cm.Includes bibliographical references (p. 8-9).3288039 bytesapplication/pdfen-USQL1 .A436 no.156, 1925Protoceratops andrewsi.Dinosaurs -- Mongolia.Reptiles, Fossil -- Mongolia.Paleontology -- Cretaceous -- Mongolia.Paleontology -- Mongolia.On Protoceratops, a primitive ceratopsian dinosaur from the Lower Cretaceous of Mongolia. American Museum novitates ; no. 156text