{add mccjic/^) / 



K 



Fig. 61. Evolution of the Jaw Muscles from Fish to Man. 



I. Shark (data from Allis). II. Lobe-finned ganoid (after L. A. 

 Adams). III. Primitive amphibian (after L. A. Adams). Restora- 

 tion. IV. Primitive mammal-like reptile (skull mainly from Broom). 

 Restoration. V. Advanced mammal-like reptile (after L. A. Adams). 

 Restoration. VI. Primitive marsupial (after L. A. Adams). VII. 

 Primitive primate. VIII. Chimpanzee. IX. Modern man. 

 For details, see p. xxvi. 



103 



