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      The Oxford Handbook of Cultural Evolution 

      The Earliest Tools and Cultures of Hominins

      edited-book
      Oxford University Press

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          Abstract

          This chapter critically discusses the earliest tools and cultures of hominins—the species most closely related to humans. It starts with an inferred organic tool age that would have already existed before the split of hominins from the ape lineage. It then examines the two currently fully established earliest instances of the stone tool age—the Oldowan and Acheulean. Contrary to prevalent assumptions, the cultural status of the Oldowan and most or all of the Acheulean (and the organic tool age) may have been that of ‘minimal culture’. Minimal culture shares with modern human culture and animal culture influences of some social learning types—for example, on frequencies of behaviours and tools—but, unlike human culture, it excludes cultural transmission of novel—supra-individual—behavioural and/or artefact know-how. If true, cumulative cultural transmission of know-how to supra-individual levels would then have started much later than is currently presumed.

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          Most cited references66

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          Ratcheting up the ratchet: on the evolution of cumulative culture.

          Some researchers have claimed that chimpanzee and human culture rest on homologous cognitive and learning mechanisms. While clearly there are some homologous mechanisms, we argue here that there are some different mechanisms at work as well. Chimpanzee cultural traditions represent behavioural biases of different populations, all within the species' existing cognitive repertoire (what we call the 'zone of latent solutions') that are generated by founder effects, individual learning and mostly product-oriented (rather than process-oriented) copying. Human culture, in contrast, has the distinctive characteristic that it accumulates modifications over time (what we call the 'ratchet effect'). This difference results from the facts that (i) human social learning is more oriented towards process than product and (ii) unique forms of human cooperation lead to active teaching, social motivations for conformity and normative sanctions against non-conformity. Together, these unique processes of social learning and cooperation lead to humans' unique form of cumulative cultural evolution.
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            Orangutan cultures and the evolution of material culture.

            Geographic variation in some aspects of chimpanzee behavior has been interpreted as evidence for culture. Here we document similar geographic variation in orangutan behaviors. Moreover, as expected under a cultural interpretation, we find a correlation between geographic distance and cultural difference, a correlation between the abundance of opportunities for social learning and the size of the local cultural repertoire, and no effect of habitat on the content of culture. Hence, great-ape cultures exist, and may have done so for at least 14 million years.
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              Evidence for stone-tool-assisted consumption of animal tissues before 3.39 million years ago at Dikika, Ethiopia.

              The oldest direct evidence of stone tool manufacture comes from Gona (Ethiopia) and dates to between 2.6 and 2.5 million years (Myr) ago. At the nearby Bouri site several cut-marked bones also show stone tool use approximately 2.5 Myr ago. Here we report stone-tool-inflicted marks on bones found during recent survey work in Dikika, Ethiopia, a research area close to Gona and Bouri. On the basis of low-power microscopic and environmental scanning electron microscope observations, these bones show unambiguous stone-tool cut marks for flesh removal and percussion marks for marrow access. The bones derive from the Sidi Hakoma Member of the Hadar Formation. Established (40)Ar-(39)Ar dates on the tuffs that bracket this member constrain the finds to between 3.42 and 3.24 Myr ago, and stratigraphic scaling between these units and other geological evidence indicate that they are older than 3.39 Myr ago. Our discovery extends by approximately 800,000 years the antiquity of stone tools and of stone-tool-assisted consumption of ungulates by hominins; furthermore, this behaviour can now be attributed to Australopithecus afarensis.
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                Author and book information

                Book Chapter
                February 23 2023
                10.1093/oxfordhb/9780198869252.013.33
                ae0be6f3-fd3f-45c1-8c79-43fa7b9efbc3
                History

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