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Two million years of flaking stone and the evolutionary efficiency of stone tool technology

An Author Correction to this article was published on 25 January 2019

This article has been updated


Temporal variability in flaking stone has been used as one of the currencies for hominin behavioural and biological evolution. This variability is usually traced through changes in artefact forms and techniques of production, resulting overall in unilineal and normative models of hominin adaptation. Here, we focus on the fundamental purpose of flaking stone—the production of a sharp working edge—and model this behaviour over evolutionary time to reassess the evolutionary efficiency of stone tool technology. Using more than 18,000 flakes from 81 assemblages spanning two million years, we show that greater production of sharp edges was followed by increased variability in this behaviour. We propose that a diachronic increase in this variability was related to a higher intensity of interrelations between different behaviours involving the use and management of stone resources that gave fitness advantages in particular environmental contexts. The long-term trends identified in this study inform us that the evolutionary efficiency of stone tool technology was not inherently in advanced tool forms and production techniques, but emerged within the contingencies of hominin interaction with local environments.

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Fig. 1: Flaking stone by hominins over evolutionary time.
Fig. 2: Production of sharp edges by hominins over evolutionary time.
Fig. 3: Stone management by Neanderthals in southwest France from 95 ka until 45 ka.

Change history

  • 31 January 2019

    A technical error led to the Supplementary files not being updated when the correction notice was published on 25 January 2018; these files have now been updated.

  • 25 January 2019

    In the version of this Article originally published, the authors mistakenly included duplicate entries in the flake datasets for the new Pech de l’Azé IV and Warwasi collections, resulting in minor errors in the statistical analysis. The authors have now repeated this analysis with the correct flake datasets. As a result, in the following two sentences, the number of flakes has been changed from 19,000 to 18,000: “Using more than 18,000 flakes from 81 assemblages spanning two million years...” and “We applied a comparative approach...on more that 18,000 complete and unmodified flakes.” In addition, in Figs. 1–3 and Supplementary Fig. 1, some of the data points for the Pech de l’Azé IV and Warwasi collections have moved; the original and corrected figures are below. Supplementary Tables 1 and 2 have been updated to reflect the corrected statistics, and datasets ‘Flake_data’ and ‘Summary_data’ have been replaced with the corrected data files. Furthermore, the data availability statement has been updated with the text “Open access to these data and the R code generated for this study is provided at”. The authors would like to thank L. Premo at Washington State University for finding the duplicate entries in the published flake dataset.


  1. Semaw, S. et al. 2.5-million-year-old stone tools from Gona, Ethiopia. Nature 385, 333–336 (1997).

    Article  CAS  Google Scholar 

  2. Harmand, S. et al. 3.3-million-year-old stone tools from Lomekwi 3, West Turkana, Kenya. Nature 521, 310–315 (2015).

    Article  CAS  Google Scholar 

  3. Zink, K. D. & Liebermann, D. E. Impact of meat and Lower Palaeolithic food processing techniques on chewing in humans. Nature 531, 500–503 (2016).

    Article  CAS  Google Scholar 

  4. Dominguez-Rodrigo, M. & Pickering, T. R. The meat of the matter: an evolutionary perspective on human carnivory. Azania Archaeol. Res. Afr. 52, 4–32 (2017).

    Google Scholar 

  5. Blumenschine, R. J. & Pobiner, B. L. in Evolution of the Human Diet: The Known, the Unknown, and the Unknowable (ed. Ungar, P.) 167–190 (Oxford Univ. Press, Oxford, 2007).

  6. Morgan, T. J. H. et al. Experimental evidence for the co-evolution of hominin tool-making teaching and language. Nat. Commun. 6, 6029 (2015).

    Article  CAS  Google Scholar 

  7. Nonaka, T., Bril, B. & Rein, R. How do stone knappers predict and control the outcome of flaking? Implications for understanding early stone tool technology. J. Hum. Evol. 59, 155–167 (2010).

    Article  Google Scholar 

  8. Stout, D. Stone tool making and the evolution of human culture and cognition. Philos. Trans. R. Soc. B 366, 1050–1059 (2011).

    Article  Google Scholar 

  9. Ambrose, S. H. Paleolithic technology and human evolution. Science 291, 1748–1753 (2001).

    Article  CAS  Google Scholar 

  10. Shea, J. J. Lithic modes A—I: a new framework for describing global-scale variation in stone too technology illustrated with evidence from the east Mediterranean Levant. J. Archaeol. Method Theory 20, 151–186 (2013).

    Article  Google Scholar 

  11. Clark, G World Prehistory: A New Synthesis. (Cambridge Univ. Press: Cambridge, 1969).

    Google Scholar 

  12. Foley, R. A. & Lahr, M. M. On stony ground: lithic technology, human evolution, and the emergence of culture. Evol. Anthropol. 12, 109–122 (2003).

    Article  Google Scholar 

  13. Brown, K. S. et al. An early and enduring advanced technology originating 71,000 years ago in South Africa. Nature 491, 590–593 (2012).

    Article  CAS  Google Scholar 

  14. Lombard, M. & Phillipson, L. Indications of bow and stone-tipped arrow use 64,000 years ago in KwaZulu-Natal, South Africa. Antiquity 84, 635–648 (2010).

    Article  Google Scholar 

  15. Binford, L. R. & O’Connell, J. F. An Alyawara day: the stone quarry. J. Anthropol. Res. 40, 406–432 (1984).

    Article  Google Scholar 

  16. Shott, M. J. & Sillitoe, P. Use life and curation in New Guinea experimental used flakes. J. Archaeol. Sci. 32, 653–663 (2005).

    Article  Google Scholar 

  17. Clarkson, C., Haslam, M. & Harris, C. in Lithic Technological Systems and Evolutionary Theory (eds Goodale, N. & Andrefsky, W.) 117–138 (Cambridge Univ. Press, Cambridge, 2015).

  18. Lemorini, C. et al. The function of recycled lithic items at late Lower Paleolithic Qesem Cave, Israel: an overview of the use–wear data. Quat. Int. 361, 103–112 (2015).

    Article  Google Scholar 

  19. Holdaway, S. J. & Douglass, M. J. A twenty-first century archaeology of stone artifacts. J. Archaeol. Method Theory 19, 101–131 (2012).

    Article  Google Scholar 

  20. Dibble, H. L. et al. Major fallacies surrounding stone artifacts and assemblages. J. Archaeol. Method Theory 24, 813–851 (2017).

    Article  Google Scholar 

  21. Kuhn, S. L. On planning and curated technologies in the Middle Paleolithic. J. Anthropol. Res. 48, 185–214 (1992).

    Article  Google Scholar 

  22. Braun, D. R. & Harris, J. W. K. in Oldowan: Rather More Than Smashing Stones (eds Mora, R. & de la Torre, I.) 132–144 (Univ. Barcelona Press, Barcelona, 2003).

  23. Muller, A. & Clarkson, C. Identifying major transitions in the evolution of lithic cutting edge production rates. PLoS ONE 11, e0167244 (2016).

    Article  Google Scholar 

  24. Braun, D. R., Plummer, T., Ferraro, J. V., Ditchfield, P. & Bishop, L. C. Raw material quality and Oldowan hominin toolstone preferences: evidence from Kanjera South, Kenya. J. Archaeol. Sci. 36, 1605–1614 (2009).

    Article  Google Scholar 

  25. Prasciunas, M. M. Bifacial cores and flake production efficiency: an experimental test of technological assumptions. Am. Antiq. 72, 334–348 (2007).

    Article  Google Scholar 

  26. Key, A. J. M. & Lycett, S. J. An experimental assessment of flake size variation on cutting efficiency and loading. J. Archaeol. Sci. 41, 140–146 (2014).

    Article  Google Scholar 

  27. Ugan, A., Bright, J. & Rogers, A. When is technology worth the trouble? J. Archaeol. Sci. 30, 1315–1329 (2003).

    Article  Google Scholar 

  28. Lin, S. C., Rezek, Z., Braun, D. & Dibble, H. L. On the utility and economization of unretouched flakes: the effects of exterior platform angle and platform depth. Am. Antiq. 78, 724–745 (2013).

    Article  Google Scholar 

  29. Dibble, H. L. & Rezek, Z. Introducing a new experimental design for controlled studies of flake formation: results for exterior platform angle, platform depth, angle of blow, velocity, and force. J. Archaeol. Sci. 36, 1945–1954 (2009).

    Article  Google Scholar 

  30. Geribàs, N., Mosquera, M. & Vergès, J. M. What novice knappers have to learn to become expert stone toolmakers. J. Archaeol. Sci. 37, 2857–2870 (2010).

    Article  Google Scholar 

  31. Wynn, T., Hernandez-Aguilar, R. A., Marchant, L. F. & McGrew, W. C. ‘An ape’s view of the Oldowan’ revisited. Evol. Anthropol. 20, 181–197 (2011).

    Article  Google Scholar 

  32. Schick, K. D. et al. Continuing investigations into the stone tool-making and tool-using capabilities of a bonobo (Pan paniscus). J. Archaeol. Sci. 26, 824–832 (1999).

    Article  Google Scholar 

  33. Toth, N. The Oldowan reassessed: a close look at early stone artefacts. J. Archaeol. Sci. 12, 101–120 (1985).

    Article  Google Scholar 

  34. Dibble, H. L. & McPherron, S. P. The missing Mousterian. Curr. Anthropol. 47, 777–803 (2006).

    Article  Google Scholar 

  35. Tryon, C. A., McBrearty, S. & Texier, P. J. Levallois lithic technology from the Kapthurin Formation, Kenya: Acheulian origin and Middle Stone Age diversity. Afr. Archaeol. Rev. 22, 199–229 (2005).

    Article  Google Scholar 

  36. Adler, D. S. et al. Early Levallois technology and the Lower to Middle Paleolithic transition in the Southern Caucasus. Science 345, 1609–1613 (2014).

    Article  CAS  Google Scholar 

  37. Brantingham, P. J. & Kuhn, S. L. Constraints on Levallois core technology: a mathematical model. J. Archaeol. Sci. 28, 747–761 (2001).

    Article  Google Scholar 

  38. Aubry, T. et al. Stratigraphic and technological evidence from the Middle Palaeolithic–Châtelperronian–Aurignacian record at the Bordes–Fitte rockshelter (Roches daAbilly site, central France). J. Hum. Evol. 62, 116–137 (2012).

    Article  Google Scholar 

  39. Harrison, R. Kimberley points and colonial preference: new insights into the chronology of pressure flaked point forms from the Southeast Kimberley, Western Australia. Archaeol. Oceania 39, 1–11 (2004).

    Article  Google Scholar 

  40. Mourre, V., Villa, P. & Henshilwood, C. S. Early use of pressure flaking on lithic artifacts at Blombos Cave, South Africa. Science 330, 659–662 (2010).

    Article  CAS  Google Scholar 

  41. Carr, P. J. & Bradbury, A. P. in Lithic Debitage: Context, Form, Meaning (ed. Andrefsky, W.) 126–146 (Univ. Utah Press, Salt Lake City, 2001).

  42. Hiscock, P., Turq, A., Faivre, J.-P. & Bourguignon, L. in Lithic Materials and Paleolithic Societies (eds Adams, B. & Blades, B. S.) 232–246 (Wiley–Blackwell, Oxford, 2009).

  43. Stout, D., Quade, J., Semaw, S., Rogers, M. J. & Levin, N. E. Raw material selectivity of the earliest stone toolmakers at Gona, Afar, Ethiopia. J. Hum. Evol. 48, 365–380 (2005).

    Article  Google Scholar 

  44. Beck, C. et al. Rocks are heavy: transport costs and Paleoarchaic quarry behavior in the Great Basin. J. Anthropol. Archaeol. 21, 481–507 (2002).

    Article  Google Scholar 

  45. Dibble, H. L. Interpreting typological variation of Middle Paleolithic scrapers: function, style, or sequence of reduction. J. Field Archaeol. 11, 431–436 (1984).

    Article  Google Scholar 

  46. McGuire, K. R. & Hildebrandt, W. R. Re-thinking Great Basin foragers: prestige hunting and costly signaling during the Middle Archaic period. Am. Antiq. 70, 695–712 (2005).

    Article  Google Scholar 

  47. Bliege Bird, R., Codding, B. F. & Kramer, K. L. in Why Forage? Hunters and Gatherers in the Twenty-First Century (eds Codding, B. F. & Kramer, K. L.) 213–230 (Univ. New Mexico Press, Albuquerque, 2016).

  48. Stiner, M. & Munro, N. D. On the evolution of diet and landscape during the Upper Paleolithic through Mesolithic at Franchthi Cave (Peloponnese, Greece). J. Hum. Evol. 60, 618–636 (2011).

    Article  Google Scholar 

  49. Klein, R. G., Avery, G., Cruz-Uribe, K. & Steele, T. E. The mammalian fauna associated with an archaic hominin skullcap and later Acheulean artifacts at Elandsfontein, Western Cape Province, South Africa. J. Hum. Evol. 52, 164–186 (2007).

    Article  Google Scholar 

  50. Bamforth, D. B Ecology and Human Organization on the Great Plains. (Plenum Press: New York, 1988).

    Book  Google Scholar 

  51. Debénath, A. & Dibble, H. L. Handbook of Paleolithic Typology, Vol. 1: Lower and Middle Paleolithic of Europe. (Univ. Pennsylvania Press: Philadelphia, 1994).

    Google Scholar 

  52. Dibble, H. L., Schurmans, U. A., Ioviţă, R. & McLaughlin, M. V. The measurement and interpretation of cortex in lithic assemblages. Am. Antiq. 70, 545–560 (2005).

    Article  Google Scholar 

  53. Lin, S. C., McPherron, S. P. & Dibble, H. L. Establishing statistical confidence in cortex ratios within and among lithic assemblages: a case study of the Middle Paleolithic of southwestern France. J. Archaeol. Sci. 59, 89–109 (2015).

    Article  Google Scholar 

  54. R Development Core Team R: A Language and Environment for Statistical Computing (R Foundation for Statistical Computing, Vienna, 2015);

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The collection of archaeological data was supported by the National Science Foundation (BCS-1219455, 0602021 and OISE-1358178), The Leakey Foundation, the Alexander Humboldt Foundation, the University of Pennsylvania Research Foundation, the University of Pennsylvania Museum of Archaeology and Anthropology, the Department of Human Evolution at the Max Planck Institute for Evolutionary Anthropology, the Service Régional de l’Archéologie (Bordeaux, France) and the Conseil Général (Dordogne, France). We thank the National Museums of Kenya, Heritage Western Cape (South Africa), Musée National de Préhistoire in Les Eyzies and Muséum National d’Histoire Naturelle in Paris for research permission to analyse these archaeological materials. We also thank B. A. Wood of George Washington University for comments on the first draft of the manuscript.

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All authors contributed archaeological data. Ž.R. conducted the statistical analysis of the archaeological data and wrote the paper, with contributions from all authors.

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Correspondence to Željko Režek.

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Supplementary Dataset 1

Data on length, width, thickness, platform depth, exterior platform angle, and industrial affiliation of measured flakes

Supplementary Dataset 2

Summary of flake data per archaeological assemblage, including the cortex ratio and the ratio between modified and unmodified artefacts

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Režek, Ž., Dibble, H.L., McPherron, S.P. et al. Two million years of flaking stone and the evolutionary efficiency of stone tool technology. Nat Ecol Evol 2, 628–633 (2018).

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