THF. HIND LIMB AND FOOT 

 A V 



/v /,, 



/ 



59 



Y.P.M.2015 



OC 



p, c< 27. — Left femur of Monocloniui (Centroiaurui) fiexus. A, internal view; B, external view, 1/6 natural size. 

 (V, inner condyle; of, outer condyle; r, great trochanter; /' lesser trochanter; /", 4th trochanter. 



h, head; 



Femur 



(Fig. 27) 



The left femur in the Yale specimen is entire, but quite badly crushed from side to side, 

 especially at the distal end. The head is also eroded, so that its dimensions do not equal those 

 of the right. The latter has the great trochanter and the distal end restored. Hatcher figures but 

 does not describe the femur of M. crassus, for he found none among the bones corresponding to 

 Cope's original description, as they are too long and, according to Hatcher, out of proportion to 



the tibia." 



The femur of the Yale specimen resembles the figure of M. crassus except that it appears to be 

 relatively more slender. This may be due in part to the fact that the two bones are crushed differ- 



31 Judging from Hatcher's figures (1907, Fig. 86), however, the proportions are about the same as in C. naskornus 

 i.e., femur : tibia :: 7.4 : 6. 



