c 2 $ It 1 3 



Fro. 147. Upper and lower teeth of Mindu ,<i<.< ii'i-iiiiinx, A primitive Condylarth (?) (family 

 Miochenidaj), from the Torrejon Formation, Stage II., Basal Eocene. Note the loss of the para- 

 conid in the lower molars, the bluntly rounded character of the cusps of the upper molars, x | . 

 Possibly an Insectivore. (Cf. Hfio/tswlug, Fig. 78.) From Osborn and Earle. 



ml 



FIG. 148. Upper molars, lower jaw and superior view of lower teeth of Protoiionodo,' j,^,^^^.*, 

 a very primitive Condylarth possibly ancestral to the Phenacoilontidre, from the Puerco Formation, 

 Stage I., Basal Eocene. (Cf. Figs. 147-151). This animal was apparently intermediate between 

 the Creodonta and the Condylarthra. (Cf. Figs. S4, 14'.i.) x f . After Osborii and Earle. 



FIG. 149. Upper and lower teeth of uprotorionia pv.trcensis, from the Torrejou Formation, 

 Stage II., Basal Eocene, a Condylarth more primitive than P In ixirodus (Fig. 150). x 1 . After 

 Osborn and Earle. 



