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FIGURE 28. Schmelzmuster of Nevadomys lindsayi n. gen. and sp. on the trailing edge of m1. 1: the trailing edge of Triangle 2 of the same tooth of Figure 26. A primitive tangential enamel layer can be recognized outside (below); radial enamel layer is inside (up). 2: the trailing edge on the labial side of posterior lobe of the same tooth; tangential enamel layer (below left) occupies about half of the enamel band. The other half is radial enamel layer.