We develop a study protocol to efficiently and accurately identify the raw material categories constituting the lithic assemblages at Umhlatuzana rockshelter, South Africa. We combine visual and... Show moreWe develop a study protocol to efficiently and accurately identify the raw material categories constituting the lithic assemblages at Umhlatuzana rockshelter, South Africa. We combine visual and analytical methods to establish a raw material database and to provide a more accurate insight into raw material selection during the Pleistocene Middle and Later Stone Age occupational sequence of Umhlatuzana. The protocol combines petrological properties (as studied on micromorphological samples), elemental composition of the specimens (as measured with p-XRF) and visual characterization by lithic analysts. We tested the protocol by applying it to a sample of piece-plotted lithics from four spits across the stratigraphic sequence. We document the intensive use of sandstone accounting for 25% of the tested sample. We also report a larger importance of hornfels and lower proportion of quartz than was reported in previous analyses (Kaplan 1990). The combination of micromorphological and p-XRF analysis of the Umhlatuzana assemblages demonstrates that with only visual inspection, the variability of raw materials used may be misinterpreted. With accurate raw material datasets, we are better equipped to answer techno-economic questions of the southern African Stone Age. Show less
Here we evaluate the hypothesis that during cold climatic phases, people and resources became increasingly packed along highland Lesotho's riverine corridors as the viability of palatable... Show moreHere we evaluate the hypothesis that during cold climatic phases, people and resources became increasingly packed along highland Lesotho's riverine corridors as the viability of palatable grasslands for large mammal hunting on the upland plateaus declined. These intensification efforts resulted in increased reliance on lower-ranked aquatic (fish) resources with knock-on effects for lithic technological organization. We compare data on the relative contributing of fishing to the diets of highland hunter-gatherers at Sehonghong rockshelter with a faunal proxy widely argued to correlate with subsistence intensification (faunal assemblage evenness). In addition, we compare these data with two measures of lithic technological intensification (cutting edge production and core reduction intensity) to test whether diet intensification tracks technological intensification. We show that at Sehonghong, aquatic resource exploitation is not always correlated with faunal assemblage evenness. We find that some layers (i.e. RF) show spikes in aquatic resource use irrespective of changes in mammal hunting. Other layers (i.e. layer RBL/CLBRF) were intensively occupied, but they do not have many fish. Our data also demonstrate that aquatic resource use is not associated with lithic technological intensification. These results suggest that while aquatic resource exploitation was a ‘fallback’ option for some of Lesotho's highland hunter-gatherers, there is considerable variability. Our data show that multiple intensification dimensions were variably combined through the Late Pleistocene at Sehonghong as they were elsewhere in southern Africa. Show less
Lombard, M.; Bradfield, J.; Caruana, M.V.; Makhubela, T.V.; Dusseldorp, G.L.; Kramers, J.D.; Wurz, S. 2022
A decade ago, we summarised the South African and Lesotho Stone Age technocomplex sequence as a heuristic exercise, anchored in 242 dated assemblages (Lombard et al. 2012). Following Clarke (1968),... Show moreA decade ago, we summarised the South African and Lesotho Stone Age technocomplex sequence as a heuristic exercise, anchored in 242 dated assemblages (Lombard et al. 2012). Following Clarke (1968), Sampson (1974) and Deacon (1980), we defined a technocomplex as a group of industries characterised by assemblages that have many, but not all, properties in common. Spatiotemporal changes and shifts in artefact design and frequencies owing to material use/availability and socio-economic factors are built into the framework. The accompanying dataset was intended to serve as a useful resource to both students and professionals, and to fuel research and debate. Show less
Umhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age... Show moreUmhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age assemblages makes Umhlatuzana the ideal location for the study of the MSA–LSA transition (20–40 ka) in southern Africa. This transitional period is characterized by important modifications in stone tool technology, from prepared core technology to a toolkit based on microlith production. These changes are argued to have occurred in response to changes in climate and environment leading up to the Last Glacial Maximum. The deposits bearing the transitional assemblages at Umhlatuzana rockshelter appear homogeneous with no visible stratigraphic boundaries. This study integrates geoarchaeological techniques in order to explore fine-resolution geochemical differentiations of the sediments that are macroscopically invisible, and that will provide insight into (post-)depositional processes over time. Samples were systematically retrieved from the western profile of the site following a grid-based sampling strategy and analyzed for pH, elemental composition (XRF), and Magnetic Susceptibility. Additionally, the results were integrated with preliminary micromorphological observations. Our study reveals a steady, gradual change in the geochemistry of the deposits throughout the Pleistocene, related to a combination of environmental change and occupation intensity. We suggest that the part of the sequence reported to bear Middle to Later Stone Age transitional industries is characterized by wetter environmental conditions compared to the underlying deposits. Additionally, we support results from previous studies that excluded large scale post-depositional movement of the sedimentary sequence. Our study offers a successful multi-proxy approach to systematically sample and study archaeological deposits at the macro and micro scale, integrating a variety of geoarchaeological techniques. The approach provides insight into the depositional and post-depositional history of the site, and allows for questions of stratigraphic integrity, anthropogenic input, preservation, and environmental change to be addressed. Show less
Umhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age... Show moreUmhlatuzana rockshelter is an archaeological site with an occupational record covering the Middle Stone Age, Later Stone Age, and Iron Age. The presence of both Middle and Later Stone Age assemblages makes Umhlatuzana the ideal location for the study of the MSA-LSA transition (20-40 ka) in southern Africa. This transitional period is characterized by important modifications in stone tool technology, from prepared core technology to a toolkit based on microlith production. These changes are argued to have occurred in response to changes in climate and environment leading up to the Last Glacial Maximum. The deposits bearing the transitional assemblages at Umhlatuzana rockshelter appear homogeneous with no visible stratigraphic boundaries. This study integrates geoarchaeological techniques in order to explore fine-resolution geochemical differentiations of the sediments that are macroscopically invisible, and that will provide insight into (post-)depositional processes over time. Samples were systematically retrieved from the western profile of the site following a grid-based sampling strategy and analyzed for pH, elemental composition (XRF), and Magnetic Susceptibility. Additionally, the results were integrated with preliminary micromorphological observations. Our study reveals a steady, gradual change in the geochemistry of the deposits throughout the Pleistocene, related to a combination of environmental change and occupation intensity. We suggest that the part of the sequence reported to bear Middle to Later Stone Age transitional industries is characterized by wetter environmental conditions compared to the underlying deposits. Additionally, we support results from previous studies that excluded large scale post-depositional movement of the sedimentary sequence. Our study offers a successful multi-proxy approach to systematically sample and study archaeological deposits at the macro and micro scale, integrating a variety of geoarchaeological techniques. The approach provides insight into the depositional and post-depositional history of the site, and allows for questions of stratigraphic integrity, anthropogenic input, preservation, and environmental change to be addressed. Show less
The causes of Neanderthal disappearance about 40,000 years ago remain highly contested. Over a dozen serious hypotheses are currently endorsed to explain this enigmatic event. Given the relatively... Show moreThe causes of Neanderthal disappearance about 40,000 years ago remain highly contested. Over a dozen serious hypotheses are currently endorsed to explain this enigmatic event. Given the relatively large number of contending explanations and the relatively large number of participants in the debate, it is unclear how strongly each contender is supported by the research community. What does the community actually believe about the demise of Neanderthals? To address this question, we conducted a survey among practicing palaeo-anthropologists (total number of respondents = 216). It appears that received wisdom is that demography was the principal cause of the demise of Neanderthals. In contrast, there is no received wisdom about the role that environmental factors and competition with modern humans played in the extinction process; the research community is deeply divided about these issues. Finally, we tested the hypothesis that palaeo-anthropologists’ stand in the debate co-varies with their socio-political views and attitudes. We found no evidence for such a correlation. Show less
We develop a framework to differentiate the technological niches of co-existing hominin species by reviewing some theoretical biases influential in thinking about techno-behaviours of extinct... Show moreWe develop a framework to differentiate the technological niches of co-existing hominin species by reviewing some theoretical biases influential in thinking about techno-behaviours of extinct hominins, such as a teleological bias in discussing technological evolution. We suggest that some stone-tool classification systems underestimate technological variability, while overestimating the complexity of the behaviours most commonly represented. To model the likely technological niches of extinct populations, we combine ecological principles (i.e. competitive exclusion) with physical anthropology and the archaeological record. We test the framework by applying it to the co-existence of Homo naledi and Homo sapiens during the late Middle Pleistocene in southern Africa. Based on our analysis, we suggest that tool use was probably not an essential part of H. naledi’s niche, but that technology occasionally provided caloric benefits. In contrast, tool use was a structural part of the H. sapiens way of life. We provide reasoning for our interpretation that the latter population is associated with more sophisticated reduction strategies and the development of prepared core technology. The method also has applicability to cases such as the co-existence of different toolmakers during the Earlier Stone Age (ESA) in East Africa and the co-existence of Neanderthals and H. sapiens in Eurasia. Show less
Sifogeorgakis, E.; Klinkenberg, M.V.; Esteban, I.; Murungi, M.; Carr, A.S.; Brink, V.B. van den; Dusseldorp, G.L. 2020
Umhlatuzana rockshelter has an occupation sequence spanning the last 70,000 years. It is one of the few sites with deposits covering the Middle to Later Stone Age transition (~40,000–30,000 years... Show moreUmhlatuzana rockshelter has an occupation sequence spanning the last 70,000 years. It is one of the few sites with deposits covering the Middle to Later Stone Age transition (~40,000–30,000 years BP) in southern Africa. Comprehending the site’s depositional history and occupation sequence is thus important for the broader understanding of the development of Homo sapiens’ behavior. The rockshelter was first excavated in the 1980s by Jonathan Kaplan. He suggested that the integrity of the late Middle Stone Age and Later Stone Age sediments was compromised by large-scale sediment movement. In 2018, we initiated a high-resolution geoarchaeological study of the site to clarify the site formation processes. Here, we present the results of the excavation and propose a revised stratigraphic division of the Pleistocene sequence based on field observations, sedimentological (particle size) analyses, and cluster analysis. The taphonomy of the site is assessed through phytolith and geochemical (pH, loss on ignition, stable carbon isotope) analyses. The results indicate a consistent sedimentological environment characterized by in situ weathering. The analysis of the piece-plotted finds demonstrates semihorizontal layering of archaeologically dense zones and more sterile ones. There was no indication of large-scale postdepositional sediment movement. We show that the low-density archaeological horizons in the upper part of the Pleistocene sequence are best explained by the changing patterns of sedimentation rate Show less
Amkreutz, L.; Dusseldorp, G.L.; Langejans, G.H.J.; Niekus, M. 2020
In 2016 raapte amateurarcheologe en -paleontologe Willy van Wingerden uit Honselersdijk op het strand bij Kijkduin een klein stukje vuursteen op met aan één kant een aangehechte zwarte materie. Ze... Show moreIn 2016 raapte amateurarcheologe en -paleontologe Willy van Wingerden uit Honselersdijk op het strand bij Kijkduin een klein stukje vuursteen op met aan één kant een aangehechte zwarte materie. Ze liet de vondst enkele dagen later aan archeoloog Marcel Niekus zien. Die werd direct enthousiast, het zwarte goedje zou wel eens berkenpek kunnen zijn. Daarmee werden in de prehistorie werktuigen vastgezet aan een schacht. Het bleek een topvondst te zijn, vergeleken met de vele ‘gewone’ vuurstenen artefacten die op dit strand werden gevonden. Niemand kon toen nog vermoeden dat deze vondst drie jaar later wetenschappelijk wereldnieuws zou zijn en een nieuw licht zou werpen op het gedrag van de neanderthalers. Show less
Amkreutz, L.; Dusseldorp, G.L.; Langejans, G.H.J.; Niekus, M. 2020
In 2016 raapte amateurarcheologe en -paleontologe Willy van Wingerden uit Honselersdijk op het strand bij Kijkduin een klein stukje vuursteen op met aan één kant een aangehechte zwarte materie. Ze... Show moreIn 2016 raapte amateurarcheologe en -paleontologe Willy van Wingerden uit Honselersdijk op het strand bij Kijkduin een klein stukje vuursteen op met aan één kant een aangehechte zwarte materie. Ze liet de vondst enkele dagen later aan archeoloog Marcel Niekus zien. Die werd direct enthousiast, het zwarte goedje zou wel eens berkenpek kunnen zijn. Daarmee werden in de prehistorie werktuigen vastgezet aan een schacht. Het bleek een topvondst te zijn, vergeleken met de vele ‘gewone’ vuurstenen artefacten die op dit strand werden gevonden. Niemand kon toen nog vermoeden dat deze vondst drie jaar later wetenschappelijk wereldnieuws zou zijn en een nieuw licht zou werpen op het gedrag van de neanderthalers. Show less
We explore if taxonomic analysis of archaeological mollusc assemblages can be used to reconstruct Late Pleistocene (MIS 5–3) coastal environments at Klasies River in South Africa. To obtain a... Show moreWe explore if taxonomic analysis of archaeological mollusc assemblages can be used to reconstruct Late Pleistocene (MIS 5–3) coastal environments at Klasies River in South Africa. To obtain a balanced reconstruction, we analyse the large molluscs separately from the so-called incidentals, the small mollusc species. Based on modern mollusc habitat preferences and tolerances we identify four different eco-profiles to help characterise sea surface temperatures and the character of the shore: temperature profile; geographical distribution; substrate; wave interaction. We hypothesise that changes in the Klasies River mollusc community/eco-profiles can be linked to global glacial and interglacial events and we define several testable assumptions. We found that in response to global warming and cooling events, the Klasies River mollusc communities change slightly, yet significantly. Other sources of marine environmental data confirm that average sea surface temperatures gradually decreased, but probably remained within the modern southern east coast range of variation. It appears that coastal sea surface temperatures of the warm Agulhas current were not particularly depressed during the occupation sequence. The character of the coastal topography does change more apparently during the occupation sequence of the sites and with it the mollusc assemblages: from an interglacial rocky shore in the Klasies and two Mossel Bay phases to a more glacial sandy environment during the Howiesons Poort and the MSA III. In conclusion, the temperature tolerance levels of many Klasies River mollusc species are too broad to reflect small changes in sea surface temperatures. However, in conjunction with other eco-profiles and environmental proxies, such as substrate requirements and oxygen isotopes, the temperature approximations are useful, particularly when evaluating large scale sea surface temperature fluctuations. For the characterisation of the shore and substrate we found the eco-profile approach very useful. Show less
Livestock remains appear in the South African archaeological record around 2100 years ago. However, the economic importance of domestic animals in Later Stone Age subsistence is debated. This... Show moreLivestock remains appear in the South African archaeological record around 2100 years ago. However, the economic importance of domestic animals in Later Stone Age subsistence is debated. This paper adopts an approach rooted in Optimal Foraging Theory to examine if the introduction of livestock is reflected in changing taxonomic diversity of faunal assemblages. Based on the analysis of a database of 300+ faunal assemblages, it is concluded that the economic importance of livestock during the final Later Stone Age of South Africa was relatively limited. Show less
We review indications for the behavioural complexity of foraging strategies during Marine Isotope Stage 5 (~130 – 74 ka) at Blombos Cave and Klasies River, South Africa. Although the sites were... Show moreWe review indications for the behavioural complexity of foraging strategies during Marine Isotope Stage 5 (~130 – 74 ka) at Blombos Cave and Klasies River, South Africa. Although the sites were occupied by anatomically modern humans, it is debated whether they were also behaviourally modern. The exploitation of terrestrial small nocturnal browsers may be an indication for the use of complex foraging strategies such as trapping or net-hunting. Hence we analyse the terrestrial fauna of the sites in terms of represented size classes, dietary preference and activity patterns. Seasonally planned coastal visits are also considered ‘modern’ and may be recognised by the presence of large numbers of adult male seals and by shellfish only accessible at low tide. We therefore analyse the representation of marine mammals and the represented molluscs in terms of their habitat preference. Our study suggests that trapping and net-hunting were practised in Marine Isotope Stage 5. In addition, coastal visits were probably planned. Show less
Recent studies emphasise the mosaic character of the process of neolithisation in north-western Europe. However, some overarching motives influencing the uptake of farming can be identified across... Show moreRecent studies emphasise the mosaic character of the process of neolithisation in north-western Europe. However, some overarching motives influencing the uptake of farming can be identified across regions. We model the importance of evolutionary processes underlying neolithisation. We focus on the southern part of the Low Countries, where the uptake of agriculture follows distinct trajectories in different biomes. We analyse the transition in terms of fitness benefits that foraging and agriculture bestow on the actors involved. We suggest that different substrates offer different fitness benefits with regard to the uptake of farming and that these benefits differed between the sexes, leading to differing “optimal” strategies for males and females regarding whether and how to adopt Neolithic innovations. Show less
Middle and Late Pleistocene bone assemblages have been analysed to infer hominin hunting competence. Interpretations in terms of competence are usually based on the species represented in bone... Show moreMiddle and Late Pleistocene bone assemblages have been analysed to infer hominin hunting competence. Interpretations in terms of competence are usually based on the species represented in bone assemblages, such as the presence or absence of large and dangerous species. However, the sophistication of hunting strategies is not the only factor that influences the exploitation of prey species. Before interpreting an assemblage in terms of hunting proficiency, more parsimonious explanations of prey choice must be eliminated. One important reason to focus on certain species is that they are more economic to exploit than others. To test whether the presence or absence of species can be explained by economic motives rather than by hunting proficiency, Optimal Foraging Theory is applied to Pleistocene bone assemblages. The motives that drive prey choice are studied by modelling the behavioural characteristics of species and scrutinizing which characteristics the exploited species had in common. Application to Middle Palaeolithic sites in the Eemian of Germany shows that large and dangerous species were exploited frequently, but that solitary species are better represented at some sites than species living in herds. In another case-study from the Middle Stone Age in South Africa, the most important characteristic of selected prey species is their size. Large and dangerous species were preferred over smaller dangerous species. The better representation of large docile species can be ascribed to “common sense” and not, as has been suggested, to a lack of hunting proficiency. Show less
