OSTEOLOGY OF E. DOLLOVIANUS, COPE 



I I 



forms where the belly is carried very low between the leo-s. 

 The pubis lies nearly parallel to the axis of the body. 



MEASUREMENTS OF THE PELVIS. 



Greatest length of ilium -------- 0.150" 



Length articular face in the cotyloid cavity 

 Width articular face in the cotyloid cavity 

 Greatest length of the pubis - 

 Length of distal edge of the ischium - 



The posterior limb. — The 

 posterior limb is represented 

 by the distal end of the femur 

 and the proximal end of the 

 tibia. The femur is very 

 badly preserved. The whole 

 outer shell of bone is scaled 

 off so that what remains is 

 practically a cast of the in- 

 terior cavity and of the can- 

 celous tissue of the condyles; 

 but it appears that it is very 

 different from the femur of 

 Dimetrodon, (i) PI. Ill, Figs. 

 36 and 37. The condyles 

 are less well separated and 

 lie both near the distal end 

 of the bone instead of one 

 at the side ; the whole ap- 

 pearance is of a lower type. 



From all appearances of 

 the skeleton the posterior 

 portion of the animal seems 



to have been somewhat Fig. 8.-Front foot from the upper sur- 



weaker than the anterior. face. % natural size, r, radiale; It, ulnare; 



The vertebral cohmm.— '' ^entrale; 1-5, carpals one to five; mc-mc 5, 

 . . . . metacarpals one to five. % natural size. 



ihe most notable feature m 



the skeleton is the wide diversity in the form of the elements of 



the vertebral column, In the cervicals and lumbars the neural 



