OUR FACE FROM FISH TO MAN 



limits of the individual bones, or in the vital 

 problems of determining the systematic relation- 

 ships of each of the forms figured and of the 

 groups that they represent. Recent palaeontolo- 

 gists who have contributed especially to these 

 subjects include D. M. S. Watson (in connection 

 with Stages I, II, III, V, VI), Bryant (in connec- 

 tion with Stage I), WilHston (in connection with 

 Stages III, IV), Broili (in connection with Stage 

 III), Broom (in connection with Stages V, VI), 

 Haughton (in connection with Stage VI), Matthew 

 (in connection with Stage VII), Gregory (in con- 

 nection with Stages VIII, IX). The drawings, 

 like most of the others in this book, were skilfully 

 executed by Mrs. Helen Ziska, working under the 

 constant advice and supervision of the author. 

 For whatever errors the figures may still bear, after 

 many appeals to the original data, the writer alone 

 therefore must be held responsible. 



To recapitulate, the outstanding changes in the 

 lateral view of the skull from fish to man appear 

 to have been as follows: 



Of the bones on the roof of the skull (Fig. 49), 



namely the nasals, frontals, parietals, interparietals 



(or dermo-supraoccipitals) and tabulars, only the 



86 



