SUBORDER E 



AMBLYPODA 



223 



having two inwardly converging ridges. Lower molars with two transversely oblique 

 ridges. Upper canine very large, descending far heloio the row of teeth in the lower 

 jaiv. Lower incisors and canities small. Condyle of the lower jaw directed back- 



FiG. 305. 

 Uintatherium mirabile Marsh sp. Middle Eocene (Bridger beds), Wyoming. Skeleton restored by Marsh. i/i3- 



Uinto,therium miroMle Marsh sp. Middle Eocene (Bridger beds), Wyoming. Skull and lower jaw. 1/3. 



(After Marsh.) 



wardly and only slightly higher than the teeth. Femur without third trochanter. 

 Abundant in the Middle (Bridger beds) and Upper Eocene of Wyoming. 



The Dinoceratidae comprise some of the most powerful and peculiar of all 

 terrestrial mammals. The largest forms, such as Loxolophodon {Tinoceras), 



