We thank the Visual Information Technology division of the National Research Council of Canada for use of the three-dimensional laser scanner and their incredible expertise and patience, M. Caldwell of the Canadian Museum of Nature for arranging the loan of the fossil material and initial conversations, M. Getz of the department of Industrial Design at Carleton University for help with Form-Z and file conversions, A. Webb for the loan of the IBM- compatible computer and C. Schröder-Adams and N. Saumure for advise and support. This project was funded by NSERC Research Grant OGP0041665 to R. T. Patterson.