OUR FACE FROM FISH TO MAN 



frontal bones, whereas in the earliest stages they 

 lay beneath these bones. 



Fig. 29. Long-snouted Relatives of Ours from 

 THE Cretaceous of Mongolia. (Restorations.) 



For details, see pp. xvii., xviii. 



It has been explained above how this shift in 



relations began, by the overlapping of the edges 



50 



