NO. I LOWER EOCENE MAMMALIAN FAUNAS GAZIN 9I 



Page 



Fig. 5. Palaeictops, cf. tauri-cinerei ( Jepsen) 22 



Right upper molars, M^-M* (U.S.N.M. No. 22122), occlusal view. 

 4 X natural size. Bitter Creek, Washakie Basin, Wyoming. 



Fig. 6. Cynodontomys angnstidens Matthew 40 



Right upper molars, M*-M' (U.S.N.M. No. 22121), occlusal view. 

 4 X natural size. Bitter Creek, Washakie Basin, Wyoming. 



Fig. 7. Cynodontomys knightensis Gazin 41 



Right upper cheek teeth, P*-M' (U.S.N.M. No. 22106), occlusal view. 

 4 X natural size. La Barge, Green River Basin, Wyoming. 



Fig. 8. Cynodontomys scottianus (Cope) 41 



Upper cheek teeth, P^-M" (U.S.N.M. No. 221 17), P^-M" from left side, 

 pi_p» reversed from right side, occlusal view. 4 X natural size. New 

 Fork, Green River Basin, Wyoming. 



Plate 2 



primates and insectivore from the lower eocene of wyoming 



Fig. I. Loveina zephyri Simpson 33 



Left ramus of mandible, Ps-Mi (A.M. No. 32517), type specimen, oc- 

 clusal and lateral views. S X natural size. Lost Cabin, Wind River 

 Basin, Wyoming, 



Fig. 2. Chlororhysis knightensis Gazin 32 



Right ramus of mandible. Mi (U.S.N.M. No. 22385), occlusal and 

 lateral views. 5 X natural size. La Barge, Green River Basin, 

 Wyoming. 



Figs. 3, 4. Omomys sheai, new species 31 



3, left ramus of mandible, Ma (U.S.N.M. No. 191 97), occlusal and 

 lateral views. 4, Right ramus of mandible, M3-M3 (U.S.N.M. No. 

 22384), type specimen, occlusal and lateral views. 5 X natural size. 

 La Barge, Green River Basin, Wyoming. 



Fig. 5. Omomys minuttts Loomis 31 



Right ramus of mandible, Mi-Ms (A.C.M. No. 3365), type specimen, 

 occlusal and lateral views. 5 X natural size. Lysite, Wind River 

 Basin, Wyoming. 



Fig. 6. Phenacolemur, cf . praecox Matthew 39 



Left ramus of mandible. Ma and part of Mi (Y.P.M. No. 14062). 

 Occlusal view 4J^ X natural size ; lateral view 3 X natural size. 

 Bitter Creek, Washakie Basin, Wyoming. 



Fig. 7. Apatemys hilrzeleri, new species 26 



Right ramus of mandible, I, M2, and part of Mi (U.S.N.M, No. 22386), 

 occlusal and lateral views. 4 X natural size. La Barge, Green River 

 Basin, Wyoming. 



Plate 3 

 primates from the lower eocene of wyoming 



Fig. 1. Anemorhysis sublettensis (Gazin) 34 



Left ramus of mandible, P4-M2 (U.S.N.M. No. 19205), type specimen, 

 occlusal and lateral views. 5 X natural size. La Barge, Green River 

 Basin, Wyoming, 



