<Table> <Tr> <Td> </Td> <Td> Some of this article's listed sources may not be reliable . Please help this article by looking for better, more reliable sources . Unreliable citations may be challenged or deleted . (February 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> Some of this article's listed sources may not be reliable . Please help this article by looking for better, more reliable sources . Unreliable citations may be challenged or deleted . (February 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> The social organization of the earliest Paleolithic (Lower Paleolithic) societies remains largely unknown to scientists, though Lower Paleolithic hominins such as Homo habilis and Homo erectus are likely to have had more complex social structures than chimpanzee societies . Late Oldowan / Early Acheulean humans such as Homo ergaster / Homo erectus may have been the first people to invent central campsites or home bases and incorporate them into their foraging and hunting strategies like contemporary hunter - gatherers, possibly as early as 1.7 million years ago; however, the earliest solid evidence for the existence of home bases or central campsites (hearths and shelters) among humans only dates back to 500,000 years ago . </P> <P> Similarly, scientists disagree whether Lower Paleolithic humans were largely monogamous or polygynous . In particular, the Provisional model suggests that bipedalism arose in pre-Paleolithic australopithecine societies as an adaptation to monogamous lifestyles; however, other researchers note that sexual dimorphism is more pronounced in Lower Paleolithic humans such as Homo erectus than in modern humans, who are less polygynous than other primates, which suggests that Lower Paleolithic humans had a largely polygynous lifestyle, because species that have the most pronounced sexual dimorphism tend more likely to be polygynous . </P>

What did humans learn to do during the paleolithic age