34 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



EXPLANATION OF PLATES 



Plate i 



i-agomorph, carnivore, condylarth, and perissodactyls from 

 the badwater upper eocene 



Fig. I. Mytonolagus wyom'mgensis A. E. Wood: Right maxilla (U.S.N.M. 



No. 21090), occlusal view of teeth. 4 x natural size. Badwater upper 



Eocene, Wind River Basin, Wyo. 

 Fig. 2. Miacis, cf. robustus (Peterson) : Left ramus of mandible (U.S.N.M. 



No. 21087), occlusal and lateral views. Natural size. Badwater upper Eo- 

 cene, Wind River Basin, Wyo. 

 Fig. 3. Hyopsodus, cf. uintensis Osborn: Right upper molar (U.S.N.M. No. 



21089), occlusal view. 4 x natural size. Badwater upper Eocene, Wind 



River Basin, Wyo. 

 Fig. 4. Epitriplopus? , sp. : Left lower molar (U.S.N.M. No. 21099), occlusal 



view. Natural size. Badwater upper Eocene, Wind River Basin, Wyo. 

 Fig. 5. Epihippus, cf. gracilis (Marsh) : Right maxilla (U.S.N.M. No. 21092), 



occlusal view. Twice natural size. Badwater upper Eocene, Wind River 



Basin, Wyo. 

 Fig. 6. Epihippus, cf. parvus Granger: Right maxilla (U.S.N.M. No. 21091), 



occlusal view. Twice natural size. Badwater upper Eocene, Wind River 



Basin, Wyo. 

 Figs. 7, 8. Dilophodon, cf. leotainis (Peterson) : 6, Right upper cheek teeth 



(U.S.N.M. No. 21098), occlusal view (incomplete P* reversed from left 



side). 7, Right lower cheek teeth (U.S.N.M. No. 20207), occlusal view. 



One and one-half times natural size. Badwater upper Eocene, Wind River 



Basin, Wyo. 



Plate 2 

 perissodactyls from the dry creek and badwater upper eocene 



Figs. 1-3. Eomoropus anarsius, new species: i, Skull and left ramus of mandi- 

 ble (U.S.N.M. No. 21097), type specimen, lateral view. Two-fifths natural 

 size. 2, Left upper molars (U.S.N.M. No. 21097), type specimen, occlusal 

 view. Natural size. 3, Left lower cheek teeth (U.S.N.M. No. 21097), type 

 specimen, occlusal view. Natural size. Dry Creek upper Eocene, Wind 

 River Basin, Wyo. 



Fig. 4. Desmatotherium woodi, new species : Composite right upper cheek 

 tooth series; premolars (U.S.N.M. No. 20202), occlusal view; molars 

 (U.S.N.M. No. 20200), type specimen, occlusal view. Natural size. Bad- 

 water upper Eocene, Wind River Basin, Wyo. 



Plate 3 



artiodactyls from the badwater upper eocene 



Fig. I. ^/TiCK/K.? /Tflf/rn'/HJ, new genus and species : Right maxilla (U.S.N.M. 

 No. 21 100), type specimen, occlusal view. Twice natural size. Badwater 

 upper Eocene, Wind River Basin, Wyo. 



