The most thorough and up -to -date survey of dinosaurs available

M. K. Brett-Surman is Museum Specialist at the National Museum of Natural History of the Smithsonian Institution.

Thomas R. Holtz, Jr., is Senior Lecturer and Director, Earth, Life and Time Program, Department of Geology, University of Maryland.

James O. Farlow is Professor of Geology at Indiana University¿Purdue University at Ft. Wayne.