Figure 12. ?Isurolamna sp. A. 12.1.1. Lingual view of the tooth crown and a central foramen in the tooth base; 12.1.2. and 12.1.3. Profile views showing the inflated nature of the tooth lingual face and flattened non-inflated labial face; 12.1.4. Labial view; GSC 124520; scale bar = 10.0 mm.