the evolution of man is characterized significantly by the increase in cranial capacity. The text traces this trend: Homo habilis had a brain capacity of 650-800cc, Homo erectus had a large brain around 900cc, and the Neanderthal man had a brain size of 1400cc. While upright posture evolved early (Australopithecines), the progressive increase in brain size is a defining trend in the Homo lineage.