NO. I LOWER EOCENE MAMMALIAN FAUNAS — GAZIN 95 



Page 



Fig. 3. Vidpavus asius Gazin 60 



Left ramus of mandible, Ps, Mi-Ma (U.S.N.M. No. 19337), type speci- 

 men, occlusal and lateral views, i^ X natural size. La Barge, Green 

 River Basin, Wyoming. 



Fig. 4. Cf. Viilpavus, sp 61 



Right upper molars, M^-M'' (U.S.N.M. No. 22473), occlusal view. 2 X 

 natural size. Bitter Creek, Washakie Basin, Wyoming. 



Fig. 5. Cf . Vulpavns australis Matthew 60 



Right upper molar (U.S.N.M. No. 22474), occlusal view. 2X natural 

 size. Fossil Butte, Fossil Basin, Wyoming. 



Fig. 6. Hapalodectes compressus Alatthew 51 



Right ramus, Pi-Ma (teeth incomplete) (U.S.N.M. No. 22447), oc- 

 clusal and lateral views. Approximately i5^ X natural size. New 

 Fork, Green River Basin, Wyoming. 



Plate 9 



condylarths from the lower eocene of wyoming 



Figs. 1-4. Haplomylus speirianus (Cope) 61 



I, Right upper molars, M^-M* (Y.P.M. No. 14077), occlusal view. 4X 

 natural size. Bitter Creek, Washakie Basin, Wyoming. 2, Left ramus 

 of mandible, Mi-Ms (U.S.N.M. No. 22429), occlusal and lateral 

 views. 4 X natural size. Elk Alountain, Fossil Basin, Wyoming. 

 3, Right ramus of mandible, P4-M1 (U.S.N.M. No. 22428), occlusal 

 and lateral views. 4 X natural size. Red Desert, Continental Divide 

 Basin, Wyoming. 4, Right ramus of mandible, M3-M3 (U.S.N.M. 

 No. 22427), occlusal and lateral views. 4X natural size. W. of Elk 

 Mountain, Fossil Basin, Wyoming. 



Figs. 5-7. Hyopsodus, cf. loomisi McKenna 62 



S, Right ramus of mandible, P* (part) -Mi (U.S.N.M. No. 22430), oc- 

 clusal view. 6, Left ramus of mandible, Ps-Mi and part of Ma 

 (U.S.N.M. No. 22583), occlusal view. 7, Right ramus of mandible, 

 P4-M2 (U.S.N.M. No. 22584), occlusal view. 4X natural size. Bitter 

 Creek, Washakie Basin, Wyoming. 



Figs. 8, 9. Phenacodits, cf. vortmani Cope 66 



8, Left upper cheek teeth, P^-M" (U.S.N.M. No. 22433), occlusal view. 

 9, Right ramus of mandible, Pa-Ma (U.S.N.M. No. 22433), occlusal 

 and lateral views, ij^ X natural size. Elk Mountain, Fossil Basin, 

 Wyoming. 



Plate id 



meniscotherium from the lower eocene of wyoming 



Figs, i, 2. Meniscotherium rohtistiim Thorpe 68 



I, Left upper dentition, P, C, P*-M» (U.S.N.M. No. 18314), occlusal 

 view. 2, Right ramus of mandible, Pa-Ma (U.S.N.M. No. 18314), 

 occlusal and lateral views. i]^2 X natural size. La Barge, Green 

 River Basin, Wyoming. 



