Fauna and Stratigraphy of the Stormberg Series. 



433 



Femur. This bone was in doubtful association with the other remains, 

 and may possibly belong to another form. It is short compared with 

 the length of the humerus, shorter than in Gresslyosaurus. It agrees 

 with Gresslyosaurus and Euskelesaurns in that the lower end of the 

 4th trochanter is below the middle of the bone. In outer view the 

 bone is straight and is considerably expanded distally. The width of 

 the distal end at the lateral condyle is greater than that at the medial 

 condyle; the groove between the two condyles is broad and fairly 

 shallow. 



The length of the femur is 620 mm., the breadth at the proximal 

 end 170 mm. The lower end of the 4th trochanter is 350 mm. 



Fig. 45. Melanorosaurus readi, Htn. 

 Right femur. X j^. 



below the top of the bone. The minimum width of the shaft is 

 ( .r> mm., its minimum thickness 73 mm. The width of the distal 

 end is 175 mm.; the thickness at the lateral condyle 115 mm., and 

 at the medial condyle 80 mm. 



This hone, when compared with the tibia, is shorter than in other 

 members of the Plateosauridae. In Euskelesaurus, however, where 

 the femur is short and stout, the tibia is not known; but it is possible 

 that the two bones in that genus bear somewhat the same relation 

 to one another as in this form. It is in the size of the vertebrae 

 that the two forms differ so markedly. 



Tibia. The tibia is a massive bone 45 cm. long with a large 



