Figure 20. Elasmobranch dermal denticle terms (modified from Johns et al. 1997 and reproduced with the permission of the Minister of Public Works and Government Services Canada, 2004, and courtesy of Natural Resources Canada, Geological Survey of Canada). 20.1.1. Subcrown and subpedicle view; 20.1.2. Anterior and upper view of crown and pedicle; 20.1.3. Profile view.