PATAGONIAN EXPEDITIONS: PALEONTOLOGY. 



EXPLANATION OF PLATE XIII. 



Fig. I . Thoatherium minusculum : P- and M-, right side, crown view. 



From cast of type of T. rhabdodon. 



Amegh. Coll. .... 

 Fig. 2. " " P- and ^, right side, crown view. 



From cast of type of T. rhabdodon. 



Fig. 3. Thoatherium velatum : 



Amegh. Coll. 



Fig. 4 



Fig. 5 



Fig. 6 



Fig. 7 



Fiof. 8 



Fig. 



9 



Fig. ic 



Fig. i: 



Ficr. I 

 o 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



Fig. I 



2 



3 



3« 



4- 



5- 



6. 



ba. 



7- 



Fig. 18. 



M-, right side, crown view. From cast 

 of type. Amegh. Coll. 

 " " M-^, right side, of same individual . 



Thoatherium minusculum : M-, right side, crown view. From 



cast of specimen in Ameghino Coll. 

 Thoatherium ka.raikense : M-, left side, crown view. From cast 



of type. Amegh. Coll. . 

 Thoatherium bilobatum : M-, right side, crown view. From cast 



of type. Amegh. Coll. 

 Proterotherium sp. : Metatarsal III, proximal end, fibular side. 

 Diadiaphorus majusculus : Metatarsal III, proximal end, fibular 



side. (No. 15,799.) 

 Thoatherium minusculum : Metacarpal III, proximal end, ulnar 



side. (No. 15,712.) 

 " " Metatarsal III, proximal end, fibular 



side. (No. 15,719.) 

 " Occiput. (No. 15,721.) . 



" " Right pes, dorsum. (No. 15,719.) . 



" " Right pes, fibular side. (No. 15,719.) 



" " Right lower dentition, outer side. 



(No. 15,719-) . . . . 

 " " The same, crown view 



" " Right upper milk dentition, outer 



side. (No. 15,236.) 

 " " The same, crown view 



" " Right lower milk dentition, crown view. 



(No. 15.236.) .... 



" " The same, outer side 



" " Left upper teeth, crown view. From 



cast of type of T. crepidatum. 



Amegh. Coll. .... 



" " Left lower teeth, crown view. From 



cast of type of T. crepidatum. 



Amegh. Coll. .... 



100 



100 



104 

 104 



100 



104 



104 

 61 



30 

 92 



97 

 85 

 96 



84 



84 



85 



100 

 100 



All figures natural size. 



(vol. VII.) 



