Man's Antiquity 



199 



Jl 



^J^^kU^J- 



Heidelberg 



? 



*A 



ki)!^ mx^^^, 



Piltdown 



Neanderthal 



-■¥ 





Cro-Magnon 



Modern Man 



Fig. 50. Evolution of Human Jaw 



Fossil remains of human bones show that there have been progressive changes in 

 the jaw from the chinless jaw of the Heidelberg man, resembling that of the gorilla, 

 to the less massive jaw, with more prominent chin, of modern man, and there have 

 been corresponding changes in the teeth. 



