The Stone Ages and Early Cultures Section 1 Prehistory - 28 the time before there was writing to study prehistory, historians rely on the work of archaeologists and anthropologists Ancestor - 28 relative who lived in the past Mary Leaky - 28 In 1959 she found bones in East Africa that were more than 1.5 million years old Believed that these bones belonged to an early hominid Donald Johanson – 28 & 29 Named his find Lucy Johanson could tell from her bones that she was small and walked on two legs Discoveries of ancient bones give us information about - 29 early humans and their ancestors Homo erectus - 30 Name means “upright man.” Knew how to control fire Once a fire was started by natural causes, such as lightning, people would use it to cook food Tools – 30 & 31 Is any handheld object that has been modified to help a person accomplish a task The sharp edge could be used to cut, chop, or scrape roots, bones, and meat Increased the chance of survival for early humans Distribute – 33 Divide among a group of people