Evolution of life Philadelphia, 1873, The illustration showcases a comparative study of human and primate jaws, featuring four distinct specimens. The first section highlights the jaw structure of a chimpanzee, emphasizing its prominent canines and robust jawbone. The second section presents the jaw of a historical population, labeled as the jaw of La Naulette, characterized by its unique dental arrangement. The third section depicts the jaw of a Melanesian individual, showcasing features typical of the region's ancestry. Finally, the last section illustrates the jaw of a modern Parisian, reflecting contemporary human dental alignment. Each drawing provides insight into the evolutionary differences and similarities among various species.