68 



THE DESEADO FORMATION OF PATAGONIA 



Fig. 33. Left side of pelvis natural size. 



The pelvis is elongated, slender and lightly built, indicat- 

 ing the same characteristics in the whole hind limb. The 

 femur has a small rounded head on a well marked neck. It is 

 excessively long, longer than that of Pachyrukhos, and also 



Fig. 35- Patella- 

 natural size. 



Fig. 34. Left femur- 

 natural size. 



Fig. 36. Tibia and fibula 

 natural size. 



