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FIGURE 23. Schmelzmuster of Nevadomys cf. N. fejfari n. gen and sp. of the ACC of m1 and the trailing edge of M1. A: the leading edge of ACC of a right m1 (21945) from Locality 9620. A true lamellar layer is on the inside (below), occupying two-thirds of the enamel band. Outside is a thin radial enamel layer. B: the trailing edge of anterior lobe of a left M1 (21894) from Locality 9620. A primitive tangential enamel layer is present on the outside (up), occupying one-third of the enamel band.