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Way AM, de la Peña P, de la Peña E, Wadley L. Howiesons Poort backed artifacts provide evidence for social connectivity across southern Africa during the Final Pleistocene. Sci Rep 2022; 12:9227. [PMID: 35680943 PMCID: PMC9184481 DOI: 10.1038/s41598-022-12677-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 04/29/2022] [Indexed: 11/24/2022] Open
Abstract
Examining why human populations used specific technologies in the Final Pleistocene is critical to understanding our evolutionary path. A key Final Pleistocene techno-tradition is the Howiesons Poort, which is marked by an increase in behavioral complexity and technological innovation. Central to this techno-tradition is the production of backed artifacts—small, sharp blades likely used as insets in composite tools. Although backed artifacts were manufactured for thousands of years before the Howiesons Poort, this period is marked by a phenomenal increase in their production. In this paper we test both social and environmental hypotheses to explain this phenomenon. We correlate environmental data with changing frequencies of backed artifact production at Sibudu and assess morphological similarity across seven sites in southern Africa. We find that these artifacts are made to a similar template across different regions and that their increased production correlates with multiple paleo-environmental proxies. When compared to an Australian outgroup, the backed artifacts from the seven southern African sites cluster within the larger shape space described by the Australian group. This leads us to argue that the observed standardized across southern Africa is related to cultural similarities and marks a strengthening of long-distance social ties during the MIS4.
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Affiliation(s)
- Amy M Way
- Evolutionary Studies Institute, University of the Witwatersrand, PO Wits, Johannesburg, 2050, South Africa. .,Geoscience and Archaeology, Australian Museum Research Institute, Australian Museum, Sydney, NSW, 2010, Australia. .,Department of Archaeology, School of Philosophical and Historical Inquiry, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Paloma de la Peña
- Evolutionary Studies Institute, University of the Witwatersrand, PO Wits, Johannesburg, 2050, South Africa.,McDonald Institute for Archaeological Research, Downing Street, Cambridge, CB2 3ER, UK.,Center of Exploration of the Deep Human Journey, University of the Witwatersrand, PO Wits, Johannesburg, 2050, South Africa
| | - Eduardo de la Peña
- Department of Plants & Crops, Faculty of Bioscience Engineering, Ghent University, 9000, Ghent, Belgium.,Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora (IHSM-UMA-CSIC), Estación Experimental "La Mayora", Málaga, Spain
| | - Lyn Wadley
- Evolutionary Studies Institute, University of the Witwatersrand, PO Wits, Johannesburg, 2050, South Africa
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2
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Hatton A, Collins B, Schoville BJ, Wilkins J. Ostrich eggshell beads from Ga-Mohana Hill North Rockshelter, southern Kalahari, and the implications for understanding social networks during Marine Isotope Stage 2. PLoS One 2022; 17:e0268943. [PMID: 35648787 PMCID: PMC9159631 DOI: 10.1371/journal.pone.0268943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 05/11/2022] [Indexed: 11/23/2022] Open
Abstract
Ostrich eggshell (OES) beads from southern African archaeological contexts shed light on past traditions of personal ornamentation, and they are also argued to provide a proxy for understanding past social networks. However, OES beads are often understudied and not reported on in detail. In particular, there has been little research on OES bead variation during Marine Isotope Stage 2 (29,000–12,000 years ago) which includes the Last Glacial Maximum when changing climatic conditions are hypothesized to have significant impact on forager social networks. Here, we present the first technological analysis of terminal Pleistocene OES beads and fragments in the Kalahari from the ~15 ka levels at Ga-Mohana Hill North Rockshelter. We contextualise these findings through comparison with coeval OES bead assemblages across southern Africa during MIS 2. Results indicate that OES beads were manufactured at Ga-Mohana Hill North during the terminal Pleistocene occupation, based on the presence of most stages of bead manufacture. The review shows that OES beads were present across southern Africa through MIS 2, suggesting that culturing of the body was an embodied and persistent practice during that time. While the importance of OES beads as decorative objects was shared by populations across southern Africa, variation in bead diameters indicate that there was stylistic variation.
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Affiliation(s)
- Amy Hatton
- Extreme Events Research Group, Max Planck Institutes for Science of Human History, Chemical Ecology and Biogeochemistry, Jena, Germany
- Department of Archaeology, Max Planck Institute for Science of Human History, Jena, Germany
- Department of Archaeology, University of Cape Town, Human Evolution Research Institute, Cape Town, Private Bag, Rondebosch, South Africa
- * E-mail:
| | - Benjamin Collins
- Department of Archaeology, University of Cape Town, Human Evolution Research Institute, Cape Town, Private Bag, Rondebosch, South Africa
- Department of Anthropology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Benjamin J. Schoville
- Department of Archaeology, University of Cape Town, Human Evolution Research Institute, Cape Town, Private Bag, Rondebosch, South Africa
- School of Social Science, University of Queensland, St Lucia, Queensland, Australia
| | - Jayne Wilkins
- Department of Archaeology, University of Cape Town, Human Evolution Research Institute, Cape Town, Private Bag, Rondebosch, South Africa
- Australian Research Centre for Human Evolution, Griffith University, Nathan, QLD, Australia
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3
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Wilkins J. Homo sapiens origins and evolution in the Kalahari Basin, southern Africa. Evol Anthropol 2021; 30:327-344. [PMID: 34363428 PMCID: PMC8596755 DOI: 10.1002/evan.21914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/26/2021] [Accepted: 06/19/2021] [Indexed: 11/05/2022]
Abstract
The Kalahari Basin, southern Africa preserves a rich archeological record of human origins and evolution spanning the Early, Middle and Late Pleistocene. Since the 1930s, several stratified and dated archeological sites have been identified and investigated, together with numerous open-air localities that provide landscape-scale perspectives. However, next to recent discoveries from nearby coastal regions, the Kalahari Basin has remained peripheral to debates about the origins of Homo sapiens. Though the interior region of southern Africa is generally considered to be less suitable for hunter-gatherer occupation than coastal and near-coastal regions, especially during glacial periods, the archeological record documents human presence in the Kalahari Basin from the Early Pleistocene onwards, and the region is not abandoned during glacial phases. Furthermore, many significant behavioral innovations have an early origin in the Kalahari Basin, which adds support to poly-centric, pan-African models for the emergence of our species.
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Affiliation(s)
- Jayne Wilkins
- Australian Research Centre for Human EvolutionGriffith UniversityBrisbaneAustralia
- Human Evolution Research Institute, University of Cape TownCape TownSouth Africa
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Gravel-Miguel C, Murray JK, Schoville BJ, Wren CD, Marean CW. Exploring variability in lithic armature discard in the archaeological record. J Hum Evol 2021; 155:102981. [PMID: 33848696 DOI: 10.1016/j.jhevol.2021.102981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 11/28/2022]
Abstract
The invention of projectile technology had important ramifications for hominin evolution. However, the number of stone points that could have been used as projectiles fluctuates in archaeological assemblages, making it difficult to define when projectile technology was first widely adopted and how its usage changed over time. Here we use an agent-based model to simulate a hunter-gatherer foraging system where armatures are dropped according to their usage. We explore the impact of interactions between human behaviors and the environmental constraints of a data-informed landscape on the distribution and number of lithic armatures found in archaeological assemblages. We ran 2400 simulations modeling different population sizes, rates of hunting with projectiles, and tool curation levels. For each simulation, we recorded the location of dropped armatures and calculated the number and percentage of used armatures that were discarded at habitation camps vs. lost during hunting. We used linear regression to identify the demographic, behavioral, and environmental factor(s) that best explained changes in these numbers and percentages. The model results show that in a well-controlled environment, most armatures used as projectile weapons are lost or discarded at hunting sites; only ∼4.5% of used armatures (or ∼2 armatures per year of simulation) are discarded in habitation camps where they would likely be excavated. These findings suggest that even rare hafted armatures found in the Early and Middle Stone Age could indicate a well-established use of such tools. Our model shows that interactions between reoccupation of archaeological sites, population size, rate of hunting with projectile weapons, and tool curation levels strongly influence the count of lithic armatures found in archaeological assemblages. Therefore, we argue that fluctuations in the counts of armatures documented at archaeological sites should be evaluated within their demographic and environmental contexts to better understand if they reflect spatiotemporal changes in hunting behavior.
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Affiliation(s)
- Claudine Gravel-Miguel
- Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, USA; Département d'anthropologie, Université de Montréal, Montréal, QC, Canada.
| | - John K Murray
- Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, USA
| | - Benjamin J Schoville
- School of Social Science, Faculty of Humanities and Social Sciences, The University of Queensland, St Lucia, Australia
| | - Colin D Wren
- Department of Anthropology, University of Colorado, Colorado Springs, CO, USA
| | - Curtis W Marean
- Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, USA; African Centre for Coastal Palaeoscience, Nelson Mandela University, Eastern Cape, South Africa
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5
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Wilkins J, Schoville BJ, Pickering R, Gliganic L, Collins B, Brown KS, von der Meden J, Khumalo W, Meyer MC, Maape S, Blackwood AF, Hatton A. Innovative Homo sapiens behaviours 105,000 years ago in a wetter Kalahari. Nature 2021; 592:248-252. [DOI: 10.1038/s41586-021-03419-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 03/04/2021] [Indexed: 12/23/2022]
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Will M, Conard NJ. Regional patterns of diachronic technological change in the Howiesons Poort of southern Africa. PLoS One 2020; 15:e0239195. [PMID: 32941544 PMCID: PMC7498030 DOI: 10.1371/journal.pone.0239195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/01/2020] [Indexed: 11/18/2022] Open
Abstract
The Howiesons Poort (HP) of southern Africa plays an important role in models on the early behavioral evolution of Homo sapiens. The HP is often portrayed as a coherent MSA industry characterized by early complex material culture. Recent work has emphasized parallel technological change through time across southern Africa potentially driven by ecological adaptations or demographic change. Here we examine patterns of diachronic variation within the HP and evaluate potential causal factors behind these changes. We test previous temporal assessments of the technocomplex at the local and regional level based on high-resolution quantitative data on HP lithic assemblages from Sibudu (KwaZulu-Natal) and comparisons with other southern African sites. At Sibudu, consistent unidirectional change in lithic technology characterizes the HP sequence. The results show a gradual reduction in typical HP markers such as the proportion of blades, backed pieces, and HP cores, as well as declining size of blades and backed artifacts. Quantitative comparisons with seven HP sites in South Africa suggest that lithic technology varies between regions over time instead of following similar changes. Concerning hypotheses of causal drivers, directional changes in lithic technology at Sibudu covary with shifting hunting patterns towards larger-sized bovids and a gradual opening of the vegetation. In contrast, variation in lithic technology shows little association with site use, mobility patterns or demographic expansions. Unlike at Sibudu, diachronic changes at other HP sites such as Diepkloof, Klasies River and Klipdrift appear to be associated with aspects of mobility, technological organization and site use. The regional diachronic patterns in the HP partly follow paleoclimatic zones, which could imply different ecological adaptations and distinct connection networks over time. Divergent and at times decoupled changes in lithic traits across sites precludes monocausal explanations for the entire HP, supporting more complex models for the observed technological trajectories.
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Affiliation(s)
- Manuel Will
- Department of Early Prehistory and Quaternary Ecology, University of Tübingen, Tübingen, Germany
- * E-mail:
| | - Nicholas J. Conard
- Department of Early Prehistory and Quaternary Ecology, University of Tübingen, Tübingen, Germany
- Senckenberg Center for Human Evolution and Paleoecology, University of Tübingen, Tübingen, Germany
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7
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Wilkins J. Learner-driven innovation in the stone tool technology of early Homo sapiens. EVOLUTIONARY HUMAN SCIENCES 2020; 2:e40. [PMID: 37588390 PMCID: PMC10427492 DOI: 10.1017/ehs.2020.40] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Current perspectives of stone tool technology tend to emphasize homogeneity in tool forms and core reduction strategies across time and space. This homogeneity is understood to represent shared cultural traditions that are passed down through the generations. This represents a top-down perspective on how and why stone tools are manufactured that largely restricts technological agency to experts, adults and teachers. However, just as bottom-up processes driven by children and youth influence technological innovation today, they are likely to have played a role in the past. This paper considers evidence from the archaeological record of early Homo sapiens' lithic technology in Africa that may attest to our long history of bottom-up social learning processes and learner-driven innovation. This evidence includes the role of emulative social learning in generating assemblages with diverse reduction strategies, a high degree of technological fragmentation across southern Africa during some time periods, and technological convergence through the Pleistocene. Counter to some perspectives on the uniqueness of our species, our ability to learn independently, to 'break the rules' and to play, as opposed to conforming to top-down influences, may also account for our technological success.
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Affiliation(s)
- Jayne Wilkins
- Australian Research Centre for Human Evolution, Environmental Futures Research Institute, Griffith University, 170 Kessels Road, Nathan, QLD4111, Australia; and Human Evolution Research Institute, University of Cape Town, South Africa
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Loftus E, Lee-Thorp J, Leng M, Marean C, Sealy J. Seasonal scheduling of shellfish collection in the Middle and Later Stone Ages of southern Africa. J Hum Evol 2019; 128:1-16. [PMID: 30825979 DOI: 10.1016/j.jhevol.2018.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/06/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022]
Abstract
This study assesses the seasonal scheduling of shellfish harvesting among hunter-gatherer populations along the southernmost coast of South Africa, based on a large number of serial oxygen isotope analyses of marine mollusk shells from four archaeological sites. The south coast of South Africa boasts an exceptional record of coastal hunter-gatherer occupation spanning the Holocene, the last glacial cycle and beyond. The significance of coastal adaptations, in this region in particular, for later modern human evolution has been prominently debated. Shellfishing behaviors are an important focus for investigation given the dietary and scheduling implications and the abundant archaeological shell remains in numerous sites. Key to better understanding coastal foraging is whether it was limited to one particular season, or year-round. Yet, this has proven very difficult to establish by conventional archaeological methods. This study reconstructs seasonal harvesting patterns by calculating water temperatures from the final growth increment of shells. Results from two Later Stone Age sites, Nelson Bay Cave (together with the nearby Hoffman's Robberg Cave) and Byneskranskop 1, show a pronounced cool season signal, which is unexpected given previous ethnographic documentation of summer as the optimal season for shellfishing activities and inferences about hunter-gatherer scheduling and mobility in the late Holocene. Results from two Middle Stone Age sites, Klasies River and Pinnacle Point 5-6, show distinct seasonal patterns that likely reflect the seasonal availability of resources in the two locations. The Pinnacle Point 5-6 assemblage, which spans the MIS5-4 transition, records a marked shift in shellfishing seasonality at c. 71 ka that aligns with other indications of archaeological and environmental change at this time. We conclude that the scheduling and intensity of shellfishing in this region is affected by a suite of factors, including environmental and cultural drivers, rather than a single variable, such as population growth.
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Affiliation(s)
- Emma Loftus
- Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1-2 South Parks Road, OX1 3TG, UK; Merton College, University of Oxford, Merton Street, OX1 4JD, UK.
| | - Julia Lee-Thorp
- Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1-2 South Parks Road, OX1 3TG, UK
| | - Melanie Leng
- NERC Isotope Geoscience Laboratory Facilities, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK; Centre for Environmental Geochemistry, School of Geography, University of Nottingham, Nottingham NG7 2RD, UK
| | - Curtis Marean
- Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, PO Box 874101, Tempe, AZ, 85287-4101, USA; African Centre for Coastal Palaeoscience, Nelson Mandela University, PO Box 77000, Port Elizabeth, 6031, South Africa
| | - Judith Sealy
- Department of Archaeology, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
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Will M, Tryon C, Shaw M, Scerri EML, Ranhorn K, Pargeter J, McNeil J, Mackay A, Leplongeon A, Groucutt HS, Douze K, Brooks AS. Comparative analysis of Middle Stone Age artifacts in Africa (CoMSAfrica). Evol Anthropol 2019; 28:57-59. [DOI: 10.1002/evan.21772] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 01/25/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Manuel Will
- Department of Early Prehistory and Quaternary EcologyUniversity of Tübingen Tübingen Germany
| | - Christian Tryon
- Department of AnthropologyPeabody Museum of Archaeology and Ethnology, Harvard University Cambridge Massachusetts
| | - Matthew Shaw
- Centre for Archaeological ScienceUniversity of Wollongong Wollongong New South Wales, Australia
| | - Eleanor M. L. Scerri
- Max Planck Institute for the Science of Human History Jena Germany
- School of ArchaeologyUniversity of Oxford Oxford United Kingdom
| | - Kathryn Ranhorn
- Department of AnthropologyPeabody Museum of Archaeology and Ethnology, Harvard University Cambridge Massachusetts
| | - Justin Pargeter
- Department of AnthropologyEmory University Atlanta Georgia
- Centre for Anthropological Research & Department of Anthropology and Development StudiesUniversity of Johannesburg Johannesburg South Africa
| | - Jessica McNeil
- Department of AnthropologyPeabody Museum of Archaeology and Ethnology, Harvard University Cambridge Massachusetts
| | - Alex Mackay
- Centre for Archaeological ScienceUniversity of Wollongong Wollongong New South Wales, Australia
| | - Alice Leplongeon
- Institute of Advanced Studies and Department of Cultural HeritageUniversity of Bologna Bologna Italy
- UMR CNRS 7194, Département Homme et EnvironnementMuséum national d'Histoire naturelle, Université de Perpignan Via Domitia, Alliance Sorbonne Université Paris France
| | - Huw S. Groucutt
- Max Planck Institute for the Science of Human History Jena Germany
- School of ArchaeologyUniversity of Oxford Oxford United Kingdom
- Max Planck Institute for Chemical Ecology Jena Germany
| | - Katja Douze
- Department of Genetics and Evolution, Anthropology Unit, Archaeology and Population in AfricaUniversity of Geneva Geneva Switzerland
| | - Alison S. Brooks
- Center for the Advanced Study of Human Paleobiology, Department of AnthropologyGeorge Washington University Washington District of Columbia
- Human Origins Program, National Museum of Natural HistorySmithsonian Institution Washington District of Columbia
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10
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Douze K, Delagnes A, Wurz S, Henshilwood CS. The Howiesons Poort lithic sequence of Klipdrift Shelter, southern Cape, South Africa. PLoS One 2018; 13:e0206238. [PMID: 30403722 PMCID: PMC6221302 DOI: 10.1371/journal.pone.0206238] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 10/09/2018] [Indexed: 12/01/2022] Open
Abstract
Howiesons Poort (HP) sites, over the past decades, have provided exceptional access to anthropogenic remains that are enhancing our understanding of early modern human behaviour during the Middle Stone Age in southern Africa. Here, we analyse the technological and typological trends in the lithic record that form part of these behaviours, based on the HP sequence recently excavated at Klipdrift Shelter, located on the southern Cape coast of South Africa. This study contributes to enhance knowledge on the mechanisms of changes that occurred during the transition to the post-HP. Despite patterns of continuity observed, notably for core reduction methods, the seven successive lithic assemblages show significant changes in the typological characteristics and raw material selection but also in the relative importance of blade production over time. However, these changes are not necessarily synchronic and occur either as gradual processes or as abrupt technological shifts. Consequently, we cross-examine the association between the lithic phasing and other anthropogenic remains within the HP sequence at Klipdrift Shelter. We explore the implications of these patterns of changes in terms of cultural behaviours and population dynamics during the HP and we highlight the relationship between the different phases of the HP sequence at Klipdrift Shelter and those from other South African HP sites.
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Affiliation(s)
- Katja Douze
- Department of Genetics and Evolution, Anthropology Unit, Archaeology and Population in Africa, University of Geneva, Geneva, Switzerland
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5199, De la Préhistoire à l’Actuel: Culture, Environnement et Anthropologie, University of Bordeaux, Pessac, France
- * E-mail:
| | - Anne Delagnes
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5199, De la Préhistoire à l’Actuel: Culture, Environnement et Anthropologie, University of Bordeaux, Pessac, France
| | - Sarah Wurz
- School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa
- Department of Archaeology, History, Cultural Studies and Religion, Centre for Early Sapiens Behaviour, University of Bergen, Bergen, Norway
| | - Christopher Stuart Henshilwood
- Department of Archaeology, History, Cultural Studies and Religion, Centre for Early Sapiens Behaviour, University of Bergen, Bergen, Norway
- Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa
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11
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Chase BM, Faith JT, Mackay A, Chevalier M, Carr AS, Boom A, Lim S, Reimer PJ. Climatic controls on Later Stone Age human adaptation in Africa's southern Cape. J Hum Evol 2017; 114:35-44. [PMID: 29447760 DOI: 10.1016/j.jhevol.2017.09.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
Abstract
Africa's southern Cape is a key region for the evolution of our species, with early symbolic systems, marine faunal exploitation, and episodic production of microlithic stone tools taken as evidence for the appearance of distinctively complex human behavior. However, the temporally discontinuous nature of this evidence precludes ready assumptions of intrinsic adaptive benefit, and has encouraged diverse explanations for the occurrence of these behaviors, in terms of regional demographic, social and ecological conditions. Here, we present a new high-resolution multi-proxy record of environmental change that indicates that faunal exploitation patterns and lithic technologies track climatic variation across the last 22,300 years in the southern Cape. Conditions during the Last Glacial Maximum and deglaciation were humid, and zooarchaeological data indicate high foraging returns. By contrast, the Holocene is characterized by much drier conditions and a degraded resource base. Critically, we demonstrate that systems for technological delivery - or provisioning - were responsive to changing humidity and environmental productivity. However, in contrast to prevailing models, bladelet-rich microlithic technologies were deployed under conditions of high foraging returns and abandoned in response to increased aridity and less productive subsistence environments. This suggests that posited links between microlithic technologies and subsistence risk are not universal, and the behavioral sophistication of human populations is reflected in their adaptive flexibility rather than in the use of specific technological systems.
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Affiliation(s)
- Brian M Chase
- Centre National de La Recherche Scientifique, UMR 5554, Institut des Sciences de l'Evolution de Montpellier, Université Montpellier, Bat. 22, CC061, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
| | - J Tyler Faith
- Natural History Museum of Utah & Department of Anthropology, University of Utah, Salt Lake City, UT 84108, USA
| | - Alex Mackay
- Centre for Archaeological Science, School of Earth and Environmental Sciences, University of Wollongong, Northfields Avenue, Building 41, NSW 2522, Australia
| | - Manuel Chevalier
- Institute of Earth Surface Dynamics, Geopolis, University of Lausanne, Quartier UNIL-Mouline, Batiment Géopolis, CH-1015 Lausanne, Switzerland
| | - Andrew S Carr
- School of Geography, Geology and the Environment, University of Leicester, Leicester LE1 7RH, UK
| | - Arnoud Boom
- School of Geography, Geology and the Environment, University of Leicester, Leicester LE1 7RH, UK
| | - Sophak Lim
- Centre National de La Recherche Scientifique, UMR 5554, Institut des Sciences de l'Evolution de Montpellier, Université Montpellier, Bat. 22, CC061, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Paula J Reimer
- School of Natural and Built Environment, Queen's University Belfast, Belfast BT7 1NN, Northern Ireland, UK
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12
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de la Peña P, Wadley L. Technological variability at Sibudu Cave: The end of Howiesons Poort and reduced mobility strategies after 62,000 years ago. PLoS One 2017; 12:e0185845. [PMID: 28982148 PMCID: PMC5628897 DOI: 10.1371/journal.pone.0185845] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/20/2017] [Indexed: 11/19/2022] Open
Abstract
We evaluate the cultural variation between the youngest Howiesons Poort layer (GR) and the oldest post-Howiesons Poort layers (RB-YA) of Sibudu Cave (KwaZulu-Natal, South Africa). We first conducted a technological analysis, secondly we performed a cladistic study with all the technological traits and, finally, we compare the technological variability with other data from Sibudu (ochre, micromorphology, fauna and plant remains). The synapomorphies of the cladistical analysis show numerous lithic technological changes between the youngest Howiesons Poort and the oldest post-Howiesons Poort layers as previously concluded. However, some technological strategies that are present, yet uncommon, in the Howiesons Poort become abundant in the overlying layers, whereas others that were fundamental to the Howiesons Poort continue, but are poorly represented in the overlying layers. We further show that lithic technological strategies appear and disappear as pulses in the post-Howiesons Poort layers studied. Among the most notable changes in the post-Howiesons Poort layers is the importance of flake production from discoidal knapping methods, the unstandardized retouched pieces and their infrequent representation, and the higher than usual frequency of grindstones. We evaluate various hypotheses to explain the transformation of a Howiesons Poort formal industry to a more ‘expedient’ assemblage. Since no marked environmental changes are contemporary with the technological transformation, a change in residential mobility patterns seems a plausible explanation. This hypothesis is supported by the changes observed in stratigraphy, lithic technology, site management, ochre and firewood collection.
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Affiliation(s)
- Paloma de la Peña
- Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa
- School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa
- * E-mail:
| | - Lyn Wadley
- Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa
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