186 Professor Marsh’s Monograph of the Dinocerata. 
15. 
FIGURE ie —Lower jaw of Dinoceras laticeps, Marsh; front vi 
Fi@ure 16.—Lower jaw of Uintatherium segne, = _— pee the left. Both 
figures are one-fourth natural size. ity BE ¢, canine; 67 
noid process; ed, condyle; d, diatoans: J, anterior foramen ; Ps 
process for protection of tusk; pm, petniiie. 
