Fig. 142. Original figure (25) of the type second superior molar of the right side of Ilipparion gratum Leidy, U. S. 

 Nat. Mus. 587. After Leidy, 1869, PI. xviii, fig. 25. (26) Original figure of a paratype. After Leidy, 1869, PI. xviii, 

 fig. 26. Both figures natural size. (Right) Side and crown views of jaw referred by Gidley to //. gratum Leidy, Amer. 

 Mus. 10845. After Gidley, 1906, figs. 6, 7, p. 141. One-half natural size. 



Fig. 143. Original figures of the neotype (Gidley) of Ilipparion gratum Leidy, Amer. Mus. 10863. (Upper) Facial 

 portion of skull, side view; Is. fs. lachrymal fossa, ma. fs. malar fossa, fig. 10, p. 145. (Lower) Palatal view of the facial 

 portion of the skull, fig. 11, p. 146. Both figures one-half natural size. After Gidley, 1900. 



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