U. S. GEOLOGICAL SURVEY 



MONOGRAPH 55 PLATE XXIV 



?^Z 



JUVENILE JAWS AND TEETH OF OLIGOCENE TITANOTHERES 



A, Menodus giganteus (Am. Mus. 510), superior vie-wr. B, Menodus giganteiis (Am. Mus. 509), superior view. Ci, Brontops dispar Carnegie Mus. 

 124), external view of right ramus; C2, the same, superior view of dentition. All one'half natural sise 



