Brown, Barnum.Schlaikjer, Erich Maren, 1905-2005-10-052005-10-051943http://hdl.handle.net/2246/387p. [119]-[149], [12] p. of plates : ill. ; 27 cm.Includes bibliographical references (p. [149]).Discovery and geological occurrence -- Previous work -- The present study - Materials studied -- Acknowledgments -- Order Ornithischia -- Suborder Ornithopoda -- Family Troödontidae Gilmore. Troödon Leidy. Troödon formosus Leidy. Troödon validus (Lambe). Troödon sternbergi, new species. Troödon edmontonensis, new species. Pachycephalosaurus, new genus. Pachycephalosaurus grangeri, new species. Pachycephalosaurus wyomingensis (Gilmore). Pachycephalosaurus reinheimeri, new species. Pachycephalosaurus sp. -- The origin of the dome of the troödont dinosaur skull -- The troödont dinosaur skeleton -- Affinities of the troödont dinosaurs.25574075 bytesapplication/pdfen-USQH1 .A4 vol.82, art.5, 1943Saurornithoididae.Pachycephalosaurus.Dinosaurs -- West (U.S.)Dinosaurs -- Alberta.Reptiles, Fossil -- West (U.S.)Reptiles, Fossil -- Alberta.Paleontology -- Cretaceous -- West (U.S.)Paleontology -- Cretaceous -- Alberta.Paleontology -- West (U.S.)Paleontology -- Alberta.text