FIGURE 5. Occlusal surfaces of hadrosaurid teeth (SEM images of casts) illustrating the results of cleaning with solvent gel. These teeth were marginal to areas that were cleaned by the application of solvent gel prior to moulding and casting and show the clear boundary between the consolidant layer and clean tooth surface. White lines are drawn around areas of shellac, with shading in the shellac. 5.1 Edmontosaurus AMNH 5879 right maxilla tooth, right hand side of tooth has been cleaned. 5.2 Hadrosaurid AMNH 5896 maxilla tooth, left hand side of tooth has been cleaned; vestiges of consolidant remain on the left hand side in depressions. 5.3 Hadrosaurus notablis SM 5465 left dentary tooth, left hand side of tooth has been cleaned. 5.4 Hadrosaurid AMNH 6387 right maxilla tooth, right hand side of tooth has been cleaned.