98 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



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3, Right upper molar (enamel missing) (U.S.N. M. No. 22434), 

 occlusal view. 3 X natural size. La Barge, Green River Basin, 

 Wyoming. 



Fig. 2. Hexacodus pelodes Gazin 82 



Left ramus of mandible, P«-M2 (U.S.N.M. No. 19215), type specimen, 

 occlusal and lateral views. 3 X natural size. La Barge, Green River 

 Basin, Wyoming. 



Fig. 4. Hexacodus, cf. pelodes Gazin 82 



Left ramus of mandible, P4-M3 (U.S.N.M. No. 22247), occlusal and 

 lateral views. 3 X natural size. New Fork, Green River Basin, 

 Wyoming. 



Fig. 5. Hexacodus tiintensis Gazin 85 



Left ramus of mandible, Mi-Ma (P.U. No. 16175), type specimen, oc- 

 clusal and lateral views. 3 X natural size. 



Figs. 6, 8. Biinophorus, cf. macropternus (Cope) 82 



6, Right upper molars, M^-M^ (U.S.N.M. No. 19212), occlusal view. 

 8, Right ramus of mandible, P4-M3 (U.S.N.M. No. 19210), occlusal 

 and lateral views, i^ X natural size. La Barge, Green River Basin, 

 Wyoming. 



Figs. 7, 9. Bunophortts, cf. etsagicus (Cope) 82 



7, Left upper molar, M' (U.S.N.M. No. 22245), occlusal view. 9, Left 

 ramus of mandible. Mi- Ms (U.S.N.M. No. 22244), occlusal and 

 lateral views, ij^ X natural size. New Fork, Green River Basin, 

 Wyoming. 



