?. TS

FIGURE 30. Schmelzmuster of Nevadomys downsi n. gen. and sp. on the ACC and alternating triangle of m1. 1: the leading edge of ACC of a right m1 (22051) from Locality 9621. A few enamel prisms rise out toward the occlusal surface at the apex close to dentine (below right), forming a trace of discrete lamellar enamel. The other part of the enamel band is occupied by radial enamel. 2: Triangle 1 of the same tooth; both leading and trailing edges are composed of two radial enamel layers.