London Jack London 
Before Adam 

Jack London (January 12, 1876 — November 22, 1916), was an American author who wrote The Call of the Wild and other books. Before Adam is a novel serialized in 1906 and 1907 in Everybody’s Magazine It is the story of a boy who dreams he lives the life of an early hominid Australopithecine. The story offers an early view of human evolution. The majority of the story is told through the eyes of the boy’s hominid alter ego, one of the Cave People. In addition to the Cave People, there are the more advanced Fire People, and the more animal-like Tree People. Other characters include the hominid’s father, a love interest, and Red-Eye, a fierce "atavism" that perpetually terrorizes the Cave People.