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Eteson B, Affinito S, Moos ET, Karakostis FA. "How Handy was early hominin 'know-how'?" An experimental approach exploring efficient early stone tool use. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2024:e25019. [PMID: 39222398 DOI: 10.1002/ajpa.25019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 08/05/2024] [Accepted: 08/14/2024] [Indexed: 09/04/2024]
Abstract
OBJECTIVES The appearance of early lithic industries has been associated with the gradual development of unique biomechanical and cognitive abilities in hominins, including human-like precision grasping and basic learning and/or communicating capacities. These include tools used for activities exclusively associated with hominin contexts (cutting flakes) and hammerstones utilized for behaviors shared with non-human primates (e.g., nut-cracking). However, no previous experimental research has focused on comparing the factors affecting efficiency between these two key behavioral patterns and their evolutionary implications. MATERIALS AND METHODS Here, we address this gap with an experimental design involving participants with varying tool-related experience levels (i.e., no experience, theoretical-only experience, and extensive practical knapping expertise) to monitor their success rates, biometrics, and surface electromyography (sEMG) recordings from eight important hand and forearm muscles. RESULTS Our results showed that practical experience had a substantial impact on flake-cutting efficiency, allowing participants to achieve greater success rates with substantially less muscle effort. This relationship between success rates and muscle effort was not observed for the nut-cracking task. Moreover, even though practical experience did not significantly benefit nut-cracking success, experts exhibited increased rates of self-improvement in that task. DISCUSSION Altogether, these experimental findings suggest that the ability to practice and retain tool-using knowledge played a fundamental role in the subsistence strategies and adaptability of early hominins, potentially providing the cognitive basis for conceptualizing the first intentional tool production strategies.
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Affiliation(s)
- Brienna Eteson
- DFG Center for Advanced Studies "Words, Bones, Genes, Tools", Department of Geosciences, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Simona Affinito
- DFG Center for Advanced Studies "Words, Bones, Genes, Tools", Department of Geosciences, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Elena T Moos
- Department of Early Prehistory and Quaternary Ecology, Eberhard Karls University of Tübingen, Schloss Hohentübingen, Tübingen, Germany
| | - Fotios Alexandros Karakostis
- DFG Center for Advanced Studies "Words, Bones, Genes, Tools", Department of Geosciences, Eberhard Karls University of Tübingen, Tübingen, Germany
- Paleoanthropology, Senckenberg Centre for Human Evolution and Palaeoenvironment, Eberhard Karls University of Tübingen, Tübingen, Germany
- Integrative Prehistory and Archaeological Science, University of Basel, Basel, Switzerland
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Mussi M, Skinner MM, Melis RT, Panera J, Rubio-Jara S, Davies TW, Geraads D, Bocherens H, Briatico G, Le Cabec A, Hublin JJ, Gidna A, Bonnefille R, Di Bianco L, Méndez-Quintas E. Early Homo erectus lived at high altitudes and produced both Oldowan and Acheulean tools. Science 2023:eadd9115. [PMID: 37824630 DOI: 10.1126/science.add9115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/29/2023] [Indexed: 10/14/2023]
Abstract
In Africa, the scarcity of hominin remains found in direct association with stone tools has hindered attempts to link Homo habilis and Homo erectus with particular lithic industries. The infant mandible discovered in level E at Garba IV (Melka Kunture) on the highlands of Ethiopia is critical to this issue due to its direct association with an Oldowan lithic industry. Here, we use synchrotron imaging to examine the internal morphology of the unerupted permanent dentition and confirm its identification as Homo erectus. Additionally, we utilize new palaeomagnetic ages to show that (i) the mandible in level E is ca. 2 million-years-old, and represents one of the earliest Homo erectus fossils, and (ii) that overlying level D, ca. 1.95 million-years-old, contains the earliest known Acheulean assemblage.
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Affiliation(s)
- Margherita Mussi
- Dipartimento di Scienze dell'Antichità, Sapienza Università di Roma, 00185 Roma, Italy
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- ISMEO - The International Association for Mediterranean and Oriental Studies, 00186 Roma, Italy
| | - Matthew M Skinner
- School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, UK
- Centre for the Exploration of the Deep Human Journey (CSDHJ), University of the Witwatersrand, Braamfontein 2000, Johannesburg, South Africa
| | - Rita T Melis
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy
| | - Joaquín Panera
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- Departamento de Prehistoria, Historia Antigua y Arqueología, Facultad de Geografía e Historia, Universidad Complutense de Madrid, Prof. Aranguren, 28040 Madrid, Spain
- IDEA, Instituto de Evolución en África, Universidad de Alcalá de Henares, 28010 Madrid, Spain
| | - Susana Rubio-Jara
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- Departamento de Prehistoria, Historia Antigua y Arqueología, Facultad de Geografía e Historia, Universidad Complutense de Madrid, Prof. Aranguren, 28040 Madrid, Spain
- IDEA, Instituto de Evolución en África, Universidad de Alcalá de Henares, 28010 Madrid, Spain
- Centro Nacional de Investigación sobre la Evolución Humana, 09002 Burgos, Spain
| | - Thomas W Davies
- School of Anthropology and Conservation, University of Kent, Canterbury, CT2 7NR, UK
| | - Denis Geraads
- Centre de Recherche en Paléontologie - Paris, Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, 75231 Paris Cedex 05, France
| | - Hervé Bocherens
- Department of Geosciences, Eberhard Karls University of Tübingen, 72074 Tübingen, Germany
- Senckenberg Centre for Human Evolution and Palaeoenvironment, 72076 Tübingen, Germany
| | - Giuseppe Briatico
- Dipartimento di Scienze dell'Antichità, Sapienza Università di Roma, 00185 Roma, Italy
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- Department of Geosciences, Eberhard Karls University of Tübingen, 72074 Tübingen, Germany
| | - Adeline Le Cabec
- Univ. Bordeaux, CNRS, Ministère de la Culture, PACEA (UMR 5199), F-33600 Pessac, France
- Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
| | - Jean-Jacques Hublin
- Max Planck Institute for Evolutionary Anthropology, 04103 Leipzig, Germany
- Chaire de Paléoanthropologie, CIRB (UMR 7241-U1050), Collège de France, 75231 Paris Cedex 05, France
| | - Agness Gidna
- Department of Cultural Heritage, Ngorongoro Conservation Area, Arusha, Tanzania
| | - Raymonde Bonnefille
- CEREGE, Université Aix-Marseille, CNRS, IRD, INRAE, Technopole Arbois-Méditerranée, 13545 Aix-en-Provence Cedex 04, France
| | - Luca Di Bianco
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
| | - Eduardo Méndez-Quintas
- Italo-Spanish Archaeological Mission at Melka Kunture and Balchit, Italy-Spain
- IDEA, Instituto de Evolución en África, Universidad de Alcalá de Henares, 28010 Madrid, Spain
- GEAAT, Grupo de Estudos de Arqueoloxía, Antigüidade e Territorio. Universidade de Vigo, Facultade de Historia, Campus As Lagoas, 32004 Ourense, Spain
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Cueva-Temprana A, Lombao D, Soto M, Itambu M, Bushozi P, Boivin N, Petraglia M, Mercader J. Oldowan Technology Amid Shifting Environments ∼2.03–1.83 Million Years Ago. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.788101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The Oldowan represents the earliest recurrent evidence of human material culture and one of the longest-lasting forms of technology. Its appearance across the African continent amid the Plio-Pleistocene profound ecological transformations, and posterior dispersal throughout the Old World is at the foundation of hominin technological dependence. However, uncertainties exist concerning the degree to which the Oldowan constitutes an environment-driven behavioral adaptation. Moreover, it is necessary to understand how Oldowan technology varied through time in response to hominin ecological demands. In this study, we present the stone tool assemblage from Ewass Oldupa, a recently discovered archeological site that signals the earliest hominin occupation of Oldupai Gorge (formerly Olduvai) ∼2.03 Ma. At Ewass Oldupa, hominins underwent marked environmental shifts over the course of a ∼200 kyr period. In this article, we deployed an analysis that combines technological and typological descriptions with an innovative quantitative approach, the Volumetric Reconstruction Method. Our results indicate that hominins overcame major ecological challenges while relying on technological strategies that remained essentially unchanged. This highlights the Oldowan efficiency, as its basic set of technological traits was able to sustain hominins throughout multiple environments.
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Key AJM, Roberts DL, Jarić I. Statistical inference of earlier origins for the first flaked stone technologies. J Hum Evol 2021; 154:102976. [PMID: 33773284 DOI: 10.1016/j.jhevol.2021.102976] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/13/2021] [Accepted: 02/13/2021] [Indexed: 01/06/2023]
Abstract
Identifying when hominins first produced Lomekwian, Oldowan, and Acheulean technologies is vital to multiple avenues of human origins research. Yet, like most archaeological endeavors, our understanding is currently only as accurate as the artifacts recovered and the sites identified. Here we use optimal linear estimation (OLE) modelling to identify the portion of the archaeological record not yet discovered, and statistically infer the date of origin of the earliest flaked stone technologies. These models provide the most accurate framework yet for understanding when hominins first produced these tool types. Our results estimate the Oldowan to have originated 2.617 to 2.644 Ma, 36,000 to 63,000 years earlier than current evidence. The Acheulean's origin is pushed back further through OLE, by at least 55,000 years to 1.815 to 1.823 Ma. We were unable to infer the Lomekwian's date of origin using OLE, but an upper bound of 5.1 million years can be inferred using alternative nonparametric techniques. These dates provide a new chronological foundation from which to understand the emergence of the first flaked stone technologies, alongside their behavioral and evolutionary implications. Moreover, they suggest there to be substantial portions of the artifact record yet to be discovered.
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Affiliation(s)
- Alastair J M Key
- School of Anthropology and Conservation, University of Kent, Canterbury, Kent, CT2 7NR, UK.
| | - David L Roberts
- Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, Kent, CT2 7NR, UK
| | - Ivan Jarić
- Biology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, České Budějovice, Czech Republic; University of South Bohemia, Faculty of Science, Department of Ecosystem Biology, České Budějovice, Czech Republic
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