Piltdown Man 19 
Fig. 7. — Inner side view of lower jaw of Piltdown man (B) compared with 
that of Chimpanzee (A), Heidelberg man (C), and modern man (D); one- 
half nat. size. c. = canine tooth ; ra.l = first molar tooth ; t. = genial 
tubercles ; m.g. — mylohyoid groove ; m.r. = mylohyoid ridge. 
