Burpee Museum of Natural History

death of the pygmy tyrant. The origin, systematics, and paleobiology of Tyrannosauridae. a symposium hosted jointly by Burpee Museum of Natural History and

origin, systematics, and paleobiology of Tyrannosauridae”, a symposium hosted jointly by Burpee Museum of Natural History and Northern Illinois University

Department of Earth and Environmental Sciences, The Open University. Retrieved January 6, 2012. Coal Forest Reconstruction. Burpee Museum of Natural History (March

Burpee Museum, Rockford, Illinois. Burpee Museum of Natural History（英语：Burpee Museum of Natural History）. （原始内容存档于2007-09-29）.  Tyrannosauridae. Tree of Life

2013.746229.  Boyd, C. A. The systematic relationships and biogeographic history of ornithischian dinosaurs. PeerJ. 2015, 3: e1523. doi:10.7717/peerj.1523