Key words: : Theropoda, Carnosauria, Tyrannosauridae, biomechanics, feeding mechanics, computer modeling, computed tomography.

Eric Snively esnively@ucalgary.ca, Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada; Donald M. Henderson don.henderson@gov.ab.ca, Royal Tyrrell Museum of Palaeontology, Box 7500, Drumheller, Alberta T0J 0Y0, Canada; Doug S. Phillips phillips@ucalgary.ca, Department of Information Technologies, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.