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Susan C. Antón, All who wander are not lost. science 368 (2020), 34–35.
New hominin cranial fossils highlight the early exploits of Homo erectus.
Scientists have hypothesized that Homo as a genus relied more heavily on technological extraction of food resources (meat, marrow, and plants) and was behaviorally more flexible than Paranthropus or Australopithecus. Even in light of the diversity among Homo species, H. erectus seems to be the beginning of something new. In the 7-million-year history of the human lineage, H. erectus was the first species to leave the African continent (see the figure). In fact, almost as soon as they arose, H. erectus appeared outside of Africa at the site of Dmanisi in the Republic of Georgia. Over the next nearly 2 million years, H. erectus occupied a variety of different habitats and contexts before going extinct well after 0.5 million years ago on presentday Java.
Christopher J. Bae, Katerina Douka & Michael D. Petraglia, On the origin of modern humans, Asian perspectives. science 358 (2017), 1269.
The traditional “out of Africa” model, which posits a dispersal of modern Homo sapiens across Eurasia as a single wave at 60,000 years ago and the subsequent replacement of all indigenous populations, is in need of revision. Recent discoveries from archaeology, hominin paleontology, geochronology, genetics, and paleoenvironmental studies have contributed to a better understanding of the Late Pleistocene record in Asia. Important findings highlighted here include growing evidence for multiple dispersals predating 60,000 years ago in regions such as southern and eastern Asia. Modern humans moving into Asia met Neandertals, Denisovans, mid-Pleistocene Homo, and possibly H. floresiensis, with some degree of interbreeding occurring.These early human dispersals,which left at least some genetic traces in modern populations, indicate that later replacements were not wholesale.
Rebecca Bliege Bird, Chloe McGuire, Douglas W. Bird, Michael H. Price, David Zeanah & Dale G. Nimmo, Fire mosaics and habitat choice in nomadic foragers. PNAS 117 (2020), 12904–12914.
In the mid-1950s Western Desert of Australia, Aboriginal populations were in decline as families left for ration depots, cattle stations, and mission settlements. In the context of reduced population density, an ideal free-distribution model predicts landscape use should contract to the most productive habitats, and people should avoid areas that show more signs of extensive prior use. However, ecological or social facilitation due to Allee effects (positive density dependence) would predict that the intensity of past habitat use should correlate positively with habitat use. We analyzed fire footprints and fire mosaics from the accumulation of several years of landscape use visible on a 35,300-km2 mosaic of aerial photographs covering much of contemporary Indigenous Martu Native Title Lands imaged between May and August 1953. Structural equation modeling revealed that, consistent with an Allee ideal free distribution, there was a positive relationship between the extent of fire mosaics and the intensity of recent use, and this was consistent across habitats regardless of their quality. Fire mosaics build up in regions with low cost of access to water, high intrinsic food availability, and good access to trade opportunities; these mosaics (constrained by water access during the winter) then draw people back in subsequent years or seasons, largely independent of intrinsic habitat quality. Our results suggest that the positive feedback effects of landscape burning can substantially change the way people value landscapes, affecting mobility and settlement by increasing sedentism and local population density.
Keywords: ideal free distribution | positive density dependence | niche construction | historical ecology | hunter-gatherer mobility
Significance: Models of human habitat choice and landscape use assume that people have negative effects on resource availability, which causes them to avoid regions that are already occupied or that show signs of extensive past use in favor of regions of higher quality. We show that when people engage in activities that increase resource productivity, like burning, there is the potential for these improvements to change habitat preferences in favor of places that have been previously modified and occupied by people. This process changes the way we think about intensification (and the origins of broad-spectrum economies), which may arise not from the negative effects of people on resources, but from the positive (and often unintentional) feedbacks between people and their environments.
David R. Braun et al., Earliest known Oldowan artifacts at >2.58 Ma from Ledi-Geraru, Ethiopia, highlight early technological diversity. PNAS 116 (2019), 11712–11717.
David R. Braun, Vera Aldeias, Will Archer, J. Ramon Arrowsmith, Niguss Baraki, Christopher J. Campisano, Alan L. Deino, Erin N. DiMaggio, Guillaume Dupont-Nivet, Blade Engda, David A. Feary, Dominique I. Garello, Zenash Kerfelew, Shannon P. McPherron, David B. Patterson, Jonathan S. Reeves, Jessica C. Thompson & Kaye E. Reed
The manufacture of flaked stone artifacts represents a major milestone in the technology of the human lineage. Although the earliest production of primitive stone tools, predating the genus Homo and emphasizing percussive activities, has been reported at 3.3 million years ago (Ma) from Lomekwi, Kenya, the systematic production of sharp-edged stone tools is unknown before the 2.58–2.55 Ma Oldowan assemblages from Gona, Ethiopia. The organized production of Oldowan stone artifacts is part of a suite of characteristics that is often associated with the adaptive grade shift linked to the genus Homo. Recent discoveries from Ledi-Geraru (LG), Ethiopia, place the first occurrence of Homo 250 thousand years earlier than the Oldowan at Gona. Here, we describe a substantial assemblage of systematically flaked stone tools excavated in situ from a stratigraphically constrained context [Bokol Dora 1, (BD 1) hereafter] at LG bracketed between 2.61 and 2.58 Ma. Although perhaps more primitive in some respects, quantitative analysis suggests the BD 1 assemblage fits more closely with the variability previously described for the Oldowan than with the earlier Lomekwian or with stone tools produced by modern nonhuman primates. These differences suggest that hominin technology is distinctly different from generalized tool use that may be a shared feature of much of the primate lineage. The BD 1 assemblage, near the origin of our genus, provides a link between behavioral adaptations—in the form of flaked stone artifacts—and the biological evolution of our ancestors.
Keywords: Oldowan | stone tools | Homo | cultural evolution | paleoanthropology
Significance: Humans are distinguished from all other primates by their reliance on tool use. When this uniquely human feature began is debated. Evidence of tool use in human ancestors now extends almost 3.3 Ma and becomes prevalent only after 2.6 Ma with the Oldowan. Here, we report a new Oldowan locality (BD 1) that dates prior to 2.6 Ma. These earliest Oldowan tools are distinctive from the 3.3 Ma assemblage and from materials that modern nonhuman primates produce. So, although tool production and use represent a generalized trait of many primates, including human ancestors, the production of Oldowan stone artifacts appears to mark a systematic shift in tool manufacture that occurs at a time of major environmental changes.
Graham Connah, African civilizations, An archaeological perspective. (Cambridge 22001).
Graham Connah, Forgotten Africa, An introduction to its archaeology. (Abingdon 2004).
Jared Diamond, The Worst Mistake in the History of the Human Race. Discover 1987 , v, 64–66.
At this point it’s instructive to recall the common complaint that archaeology is a luxury, concerned with the remote past, and offering no lessons for the present. Archaeologists studying the rise of farming have reconstructed a crucial stage at which we made the worst mistake in human history. Forced to choose between limiting population or trying to increase food production, we chose the latter and ended up with starvation, warfare, and tyranny.
M. Domínguez-Rodrigo et al., Unraveling hominin behavior at another anthropogenic site from Olduvai Gorge (Tanzania), New archaeological and taphonomic research at BK, Upper Bed II. Journal of Human Evolution 57 (2009), 260–283.
New archaeological excavations and research at BK, Upper Bed II (Olduvai Gorge, Tanzania) have yielded a rich and unbiased collection of fossil bones. These new excavations show that BK is a stratified deposit formed in a riverine setting close to an alluvial plain. The present taphonomic study reveals the secondlargest collection of hominin-modified bones from Olduvai, with abundant cut marks found on most of the anatomical areas preserved. Meat and marrow exploitation is reconstructed using the taphonomic signatures left on the bones by hominins. Highly cut-marked long limb shafts, especially those of upper limb bones, suggest that hominins at BK were actively engaged in acquiring small and middle-sized animals using strategies other than passive scavenging. The exploitation of large-sized game (Pelorovis) by Lower Pleistocene hominins, as suggested by previous researchers, is supported by the present study.
M. Domínguez-Rodrigo, A. Mabulla, H. T. Bunn, R. Barba, F. Diez-Martín, C. P. Egeland, E. Espílez, A. Egeland, J. Yravedra & P. Sánchez
Keywords: Olduvai Gorge | Meat-eating | Cut marks | Percussion marks | Taphonomy | Lower Pleistocene archaeology | Hunting | Scavenging
Manuel Domínguez-Rodrigo, Travis Rayne Pickering & Henry T. Bunn, Configurational approach to identifying the earliest hominin butchers. PNAS 107 (2010), 20929–20934.
The announcement of two approximately 3.4-million-y-old purportedly butchered fossil bones from the Dikika paleoanthropological research area (Lower Awash Valley, Ethiopia) could profoundly alter our understanding of human evolution. Butchering damage on the Dikika bones would imply that tool-assisted meat-eating began approximately 800,000 y before previously thought, based on butchered bones from 2.6- to 2.5-million-y-old sites at the Ethiopian Gona and Bouri localities. Further, the only hominin currently known from Dikika at approximately 3.4 Ma is Australopithecus afarensis, a temporally and geographically widespread species unassociated previously with any archaeological evidence of butchering. Our taphonomic configurational approach to assess the claims of A. afarensis butchery at Dikika suggests the claims of unexpectedly early butchering at the site are not warranted. The Dikika research group focused its analysis on the morphology of the marks in question but failed to demonstrate, through recovery of similarly marked in situ fossils, the exact provenience of the published fossils, and failed to note occurrences of random striae on the cortices of the published fossils (incurred through incidental movement of the defleshed specimens across and/or within their abrasive encasing sediments). The occurrence of such random striae (sometimes called collectively “trampling” damage) on the two fossils provide the configurational context for rejection of the claimed butchery marks. The earliest best evidence for hominin butchery thus remains at 2.6 to 2.5 Ma, presumably associated with more derived species than A. afarensis.
taphonomy | cut marks | hammerstone percussion | abrasion | equifinality
Manuel Domínguez-Rodrigo, Travis Rayne Pickering & Henry T. Bunn, Experimental study of cut marks made with rocks unmodified by human flaking and its bearing on claims of 3.4-million-year-old butchery evidence from Dikika, Ethiopia. Journal of Archaeological Science 39 (2012), 205–214.
In order to assess further the recent claims of w3.4 Ma butchery marks on two fossil bones from the site of Dikika (Ethiopia), we broadened the actualistic-interpretive zooarchaeological framework by conducting butchery experiments that utilized naïve butchers and rocks unmodified by human flaking to deflesh chicken and sheep long limb bones. It is claimed that the purported Dikika cut marks present their unexpectedly atypical morphologies because they were produced by early hominins utilizing just such rocks. The composition of the cut mark sample produced in our experiments is quite dissimilar to the sample of linear bone surface modifications preserved on the Dikika fossils. This finding substantiates and expands our earlier conclusion that—considering the morphologies and patterns of the Dikika bone surface modifications and the inferred coarse-grained depositional context of the fossils on which they occur—the Dikika bone damage was caused incidentally by the movement of the fossils on and/or within their depositional substrate(s), and not by early hominin butchery. Thus, contrary to initial claims, the Dikika evidence does not warrant a major shift in our understanding of early hominin behavioral evolution with regard to carcass foraging and meat-eating.
Keywords: Early hominin carcass foraging | Taphonomy | Cut marks | Random striae | Trampling
Umberto Eco, How to Write a Thesis. (Cambridge 2015).
Eco was aware of this predicament. As a university professor, he knew that the majority of students in Italian universities seldom attended classes, that very few of them would continue to write and do research, and that the degree they eventually earned would not necessarily improve their social conditions. It would have been easy to call for the system to be reformed so as not to require a thesis from students illequipped to write one, and for whom the benefit of spending several months working on a thesis might be difficult to justify in cold economic terms.
But Eco did not believe that education belonged to an elite, or that it should lower its standards in including the non-elite. He understood that the writing of a thesis forced many students outside of their cultural comfort zone, and that if the shock was too sudden or strong, they would give up. For him, it was about tailoring the challenge to students’ needs and capabilities, but without giving up thoroughness, complexity, and rigor. If students’ interests and ambitions could be met, while the limits of their sense of security were stretched, education would be achieved.
Adrian Anthony Evans, On the importance of blind testing in archaeological science, The example from lithic functional studies. Journal of Archaeological Science 48 (2014), 5–14.
Blind-testing is an important tool that should be used by all analytical fields as an approach for validating method. Several fields do this well outside of archaeological science. It is unfortunate that many applied methods do not have a strong underpinning built on, what should be considered necessary, blind-testing. Historically lithic microwear analysis has been subjected to such testing, the results of which stirred considerable debate. However, putting this aside, it is argued here that the tests have not been adequately exploited. Too much attention has been focused on basic results and the implications of those rather than using the tests as a powerful tool to improve the method. Here the tests are revisited and reviewed in a new light. This approach is used to highlight specific areas of methodological weakness that can be targeted by developmental research. It illustrates the value in having a large dataset of consistently designed blind-tests in method evaluation and suggests that fields such as lithic microwear analysis would greatly benefit from such testing. Opportunity is also taken to discuss recent developments in quantitative methods within lithic functional studies and how such techniques might integrate with current practices.
Keywords: Blind-tests | Quantification | Method improvement | Lithic microwear | Functional analysis
François-Xavier Fauvelle, Le rhinocéros d’or, Histoires du Moyen \^Age africain. folio histoire 239 (Malesherbes 2017).
François-Xavier Fauvelle, Das Goldene Rhinozeros, Afrika im Mittelalter. (München 2017). Originaltitel: Le Rhinoceros d’or – Histoires du Moyen \^Age africain.
Huw S. Groucutt et al., Rethinking the Dispersal of Homo sapiens out of Africa. Evolutionary Anthropology 24 (2015), 149–164.
Huw S. Groucutt, Michael D. Petraglia, Geoff Bailey, Eleanor M. L. Scerri, Ash Parton, Laine Clark-Balzan, Richard P. Jennings, Laura Lewis, James Blinkhorn, Nick A. Drake, Paul S. Breeze, Robyn H. Inglis, Maud H. Devès, Matthew Meredith-Williams, Nicole Boivin, Mark G. Thomas, and Aylwyn Scally
Current fossil, genetic, and archeological data indicate that Homo sapiens originated in Africa in the late Middle Pleistocene. By the end of the Late Pleistocene, our species was distributed across every continent except Antarctica, setting the foundations for the subsequent demographic and cultural changes of the Holocene. The intervening processes remain intensely debated and a key theme in hominin evolutionary studies. We review archeological, fossil, environmental, and genetic data to evaluate the current state of knowledge on the dispersal of Homo sapiens out of Africa. The emerging picture of the dispersal process suggests dynamic behavioral variability, complex interactions between populations, and an intricate genetic and cultural legacy. This evolutionary and historical complexity challenges simple narratives and suggests that hybrid models and the testing of explicit hypotheses are required to understand the expansion of Homo sapiens into Eurasia.
R. Grün & C. B. Stringer, Electron Spin Resonance Dating and the Evolution of Modern Humans. Archaeometry 33 (1991), 153–199.
An ESR signal used for dating should have the following properties.
(i) A zeroing effect deletes all previously stored ESR intensity in the sample at the event which is to be dated.
(ii) The signal intensity grows in proportion to the dose received.
(iii) The signals must have a stability which is at least one order of magnitude higher than the age of the sample.
(iv) The number of traps is constant or changes in a predictable manner. Recrystallization, crystal growth or phase transitions must not have occurred.
(v) The ESR signal is not influenced by sample preparation (grinding, exposure to laboratory light) or anomalous fading.
Sonia Harmand et al., 3.3-million-year-old stone tools from Lomekwi 3, West Turkana, Kenya. nature 521 (2015), 310–315.
Sonia Harmand, Jason E. Lewis, Craig S. Feibel, Christopher J. Lepre, Sandrine Prat, Arnaud Lenoble, Xavier Boës, Rhonda L.Quinn, Michel Brenet, Adrian Arroyo,Nicholas Taylor, Sophie Clément, GuillaumeDaver, Jean-Philip Brugal, Louise Leakey, Richard A. Mortlock, James D. Wright, Sammy Lokorodi, Christopher Kirwa, Dennis V. Kent & Hélène Roche
Human evolutionary scholars have long supposed that the earliest stone tools were made by the genusHomo and that this technological development was directly linked to climate change and the spread of savannah grasslands. New fieldwork in West Turkana, Kenya, has identified evidence of much earlier hominin technological behaviour. We report the discovery of Lomekwi 3, a 3.3-million-year-old archaeological site where in situ stone artefacts occur in spatio-temporal association with Pliocene hominin fossils in a wooded palaeoenvironment. The Lomekwi 3 knappers, with a developing understanding of stone’s fracture properties, combined core reduction with battering activities. Given the implications of the Lomekwi 3 assemblage for models aiming to converge environmental change, hominin evolution and technological origins, we propose for it the name ‘Lomekwian’, which predates the Oldowan by 700,000 years and marks a new beginning to the known archaeological record.
Peter Hertel, Projekt Diplomarbeit, Schreibwerkstatt. (Osnabrück 2001). <http://www.informatik.hs-furtwangen.de/ hanne/LATEX-DA-sws.pdf> (2017-04-16).
Wir halten fest: Jedes Dokument, mit dem man sich wegen der Diplomarbeit beschäftigt, ist sofort in der Literaturdatenbank zu vermerken. Auch dann, wenn Sie noch gar nicht wissen können, ob das Schriftstück zitiert werden soll, oder an welcher Stelle.
Gordon C. Hillman & M. Stuart Davies, Measured Domestication Rates in Wild Wheats and Barley Under Primitive Cultivation, and Their Archaeological Implications. Journal of World Prehistory 4 (1990), 157–222.
Man’s (or, more probably, Woman’s) first cereal crops were sown from seed gathered from wild stands, and it was in the course of cultivation that domestication occurred. Experiments in the measurement of domestication rates indicate that in wild-type crops of einkorn, emmer, and barley under primitive systems of husbandry: (a) domestication will occur only if they are harvested when partially or nearly ripe, using specific harvesting methods; (b) exposure to shifting cultivation may sometimes have been required; and (c) under these conditions, the crops could become completely domesticated within 200 years, and perhaps only 20-30 years, without any conscious selection. This paper (a) considers possible delays in the start of domestication due to early crops of wild-type cereals lacking domestic-types mutants; (b) examines the husbandry practices necessary for these mutants to enjoy any selective advantage; (c) considers the state of ripeness at harvest necessary for the crops to respond to these selective pressures; (d) outlines field measurements of the selective intensities arising from analogous husbandry practices applied experimentally to living wild-type crops; (e) summarizes a mathematical model which incorporates the measured selective intensities and other key variables and which describes the rate of increase in domestic-type mutants in early populations of wild-type cereals under specific combinations of primitive husbandry practices; (f) considers why very early cultivators should have used those husbandry methods which, we suggest, led unconsciously to the domestication of wild wheats and barley; and (g) considers whether these events are likely to leave archaeologically recognizable traces.
Keywords: domestication rate; agricultural origins; einkorn wheat; emmer wheat; selection pressures.
Gordon C. Hillman & M. Stuart Davies, Domestication rates in wild-type wheats and barley under primitive cultivation. Biological Journal of the Linnean Society 39 (1990), 39–78.
Man’s first cereal crops were sown from seed gathered from wild stands, and it was in the course of cultivation that domestication occurred. This paper prcsents thr preliminary rrsults of an experimcntal approach to thc measurement of domestication rate in crops of wild-type einkorn wheat exposed to primitive systems of husbandry. The results indicate that in wild-type crops of einkorn, emmer and barley (a) domestication will have occurred only if they were harvested in a partially ripe (or near-ripe) state using specific harvesting methods; (b) exposure to shifting cultivation may also have been required in somr cases; and (c) given these requirements, the crops could have become completely domcsticatrd within two centuries, and maybr in as littlr as 20-30 years without any form of conscious selection.
This paper (1) considers the possible lrngth of delays in the start of domestication due to early crops of wild-type cereals lacking domestic-type mutants; (2) examines the combination of primitive husbandry practices that would have been necessary for any selective advantage to have been unconsciously conferred on these mutants; (3) considers the state of ripeness (at harvest) necessary for crops to be able to respond to these selective prcssures; (4) outlines field measurements of the selective intensities (selection coefficients) which arise when analogous husbandry practices are applied experimentally to living wild-type crops; (5) summarizes the essential features of a mathrmatical model which inrorporatcs thcsr mcasurrments of selection coefficients and other key variables, and which describes the rate of inrreasc in domestic-type mutants that would have occurred in early populations of wild-type cereals under specific combinations of primitivc husbandry practices; (6) considers why very early cultivators should have used that combination of husbandry methods which, we suggest, unconsciously brought about the domestication of wild wheats and barley; and (7) concludes by considering whether these events arc likely to havc left recognizable tracrs in archaeological remains.
Keywords: Domestication rate – agricultural origins – einkorn wheat – emmer wheat – barley – selection pressures – archaeobotany.
Friederike Jesse, Early Pottery in Northern Africa, An Overview. Journal of African Archaeology 8 (2010), 219–238.
The emergence of pottery is a compelling issue for archaeologists. In Africa , pottery appeared in what now the southern part of the Sahara and the Sahel different localities and in different contexts in the 10th millennium bp. This paper aims to give an overview the available data concerning early pottery in Northern Africa. The radiocarbon evidence is considered as well as technological features of the pottery ; the decoration and the site context. The areas of the earliest appearance of pottery in Northern Africa were uninhabited during hyperarid phase at the end of the Pleistocene. Intriguing questions are therefore the origin of the Early Holocene occupants and of their knowledge of potting and of course the role of early pottery in the prehistoric groups.
Keywords: Northern Africa | pottery | Early Holocene | Wavy Line
David Kaplan, The Darker Side of the “Original Affluent Society”. Journal of Anthropological Research 56 (2000), 301–324.
Hunter-gatherers emerged from the “Man the Hunter” conference in 1966 as the “original affluent society”. The main features of this thesis now seem to be widely accepted by anthropologists, despite the strong reservations expressed by certain specialists in foraging societies concerning the data advanced to support the claim. This essay brings together a portion of the data and argumentation in the literature that raise a number of questions about hunter-gatherer affluence. Three topics are addressed: How “hard” do foragers work? How well-fed are members of foraging societies? And what do we mean by “work”, “leisure”, and “affluence” in the context of foraging societies? Finally, this essay offers some thoughts about why, given the reservations and critical observations expressed by anthropologists who work with foragers, the thesis seems to have been enthusiastically embraced by most anthropologists.
Greger Larson et al., Ancient DNA, pig domestication, and the spread of the Neolithic into Europe. PNAS 104 (2007), 15276–15281.
Greger Larson, Umberto Albarella, Keith Dobney, Peter Rowley-Conwy, Jörg Schibler, Anne Tresset, Jean-Denis Vigne, Ceiridwen J. Edwards, Angela Schlumbaum, Alexandru Dinu, Adrian Balaçsescu, Gaynor Dolman, Antonio Tagliacozzo, Ninna Manaseryan, Preston Miracle, Louise Van Wijngaarden-Bakker, Marco Masseti, Daniel G. Bradley and Alan Cooper
The Neolithic Revolution began 11,000 years ago in the Near East and preceded a westward migration into Europe of distinctive cultural groups and their agricultural economies, including domesticated animals and plants. Despite decades of research, no consensus has emerged about the extent of admixture between the indigenous and exotic populations or the degree to which the appearance of specific components of the “Neolithic cultural package” in Europe reflects truly independent development. Here, through the use of mitochondrial DNA from 323 modern and 221 ancient pig specimens sampled across western Eurasia, we demonstrate that domestic pigs of Near Eastern ancestry were definitely introduced into Europe during the Neolithic (potentially along two separate routes), reaching the Paris Basin by at least the early 4th millennium B.C. Local European wild boar were also domesticated by this time, possibly as a direct consequence of the introduction of Near Eastern domestic pigs. Once domesticated, European pigs rapidly replaced the introduced domestic pigs of Near Eastern origin throughout Europe. Domestic pigs formed a key component of the Neolithic Revolution, and this detailed genetic record of their origins reveals a complex set of interactions and processes during the spread of early farmers into Europe.
Doris Lessing, The Making of the Representative for Planet 8. (St Albans 1983).
Shannon P. McPherron et al., Evidence for stone-tool-assisted consumption of animal tissues before 3.39 million years ago at Dikika, Ethiopia. nature 466 (2010), 857–860.
n466-0857-Supplement.pdf, see: pnas107-20929-Dominguez-Rodrigo.pdf, n467-0341-Dempsey.pdf, JArchSci39-0205-Dominguez-Rodrigo.pdf
Shannon P. McPherron, Zeresenay Alemseged, Curtis W. Marean, Jonathan G. Wynn, Denné Reed, Denis Geraads, René Bobe & Hamdallah A. Béarat
The oldest direct evidence of stone tool manufacture comes from Gona (Ethiopia) and dates to between 2.6 and 2.5 million years (Myr) ago1. At the nearby Bouri site several cut-marked bones also show stone tool use approximately 2.5 Myr ago2. 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 40Ar-39Ar dates on the tuffs that bracket this member constrain the finds to between 3.42 and 3.24 Myrago, 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.
Stephen R. Merritt, Michael C. Pante, Trevor L. Keevil, Jackson K. Njau & Robert J. Blumenschine, Don’t cry over spilled ink, Missing context prevents replication and creates the Rorschach effect in bone surface modification studies. Journal of Archaeological Science 102 (2019), 71–79.
The scientific replicability crisis has recently focused on bone surface modification (BSM) analysis, which underlies zooarchaeological and anthropological conclusions about the ecology and evolution of tool-assisted carcass consumption behavior. We review a recent blind test of inter-analyst correspondence in morphometric analysis of experimentally generated butchery marks that advocates algorithmic methods for diagnosing and measuring BSM in an effort to standardize methodology and minimize inter-analyst error (Domínguez-Rodrigo et al., 2017. Use and abuse of cut mark analyses: The Rorschach effect. Journal of Archaeological Science, 86, 14–23. http://doi.org/10.1016/j.jas.2017.08.001). This study overstates concern about the inaccuracy of BSM measurement and interpretation, concluding that BSM analysis is a subjective, non-scientific endeavor. Based on a minimally described sample of cut marks, it measures variables that involve inherent inaccuracy and subjectivity and overlooks how the contexts of experimental sample generation – particularly the difference between immanent and configurational processes – differentially affect cut mark morphometrics. We illustrate this discussion with experimental taphonomic examples focused on analytical context including sample construction and control over factors that affect cut mark cross-sectional size. Our analysis suggests the relationship between tool attributes and cut mark morphology is not generalizable to all experimental and archaeological butchery contexts. We show that our experimental samples capture metric variability observed in archaeological cut marks, but that intentionally incised marks and realistic defleshing marks differ in width and depth. Further, when controlling for factors that impact cut mark size including animal size class, tool type, butcher experience, and density across bone portions, overlapping cut mark widths and depths produced by phonolite and ignimbrite flakes lead to poor classification of marks according to causal flake material, which casts doubt on the ability to discriminate cut marks made by different materials. We build datasets that include diverse experimental contexts and suggest that meta-analysis can disentangle how multiple configurational factors contribute to cut mark morphometric attributes. Ultimately, progress in BSM analysis rests on inter-analyst replicability, which must be preceded by clear discussion of all parts of the inferential loop – from the design of experiments that generate actualistic analogues, to their use in supporting archaeological arguments. Otherwise, problematic expert knowledge traditions may mask arguments from authority in sophisticated methodological language and underreported experimental context.
Keywords: Experimental taphonomy | Cut marks | Butchery | Generality | Realism | Context | Expert knowledge
Peter Mitchell & Paul Lane (Hrsg.), The Oxford Handbook of African Archaeology. (Oxford 2013).
James F. O’Connell, Aboriginal fires modify an ideal free distribution. PNAS 117 (2020), 13873–13875.
Bliege Bird et al.’s recent results challenge this picture by suggesting less rapid resource depletion associated with initial burns around early occupied sites, allowing more time to gain the benefits of resource regeneration. A 10-km daily foraging radius around a permanent water source contains thousands of potential 3-ha burn locations. It would take a group of 50 people setting 10 fires a week over several 6-mo burning seasons to cover a significant fraction of that catchment, long enough for burned areas to begin to display the enhanced foraging returns associated with a serial recovery process. This would reduce the incentive to move away from the improving patch and the social networks it supports. Understanding constraints like this should aid the development of increasingly realistic, archaeologically testable models of the pattern and pace of continental colonization and its ecological consequences.
Anne H. Osborne, Derek Vance, Eelco J. Rohling, Nick Barton, Mike Rogerson & Nuri Fello, A humid corridor across the Sahara for the migration of early modern humans out of Africa 120,000 years ago. PNAS 105 (2008), 16444–16447.
It is widely accepted that modern humans originated in subSaharan Africa 150–200 thousand years ago (ka), but their route of dispersal across the currently hyperarid Sahara remains controversial. Given that the first modern humans north of the Sahara are found in the Levant 120–90 ka, northward dispersal likely occurred during a humid episode in the Sahara within Marine Isotope Stage (MIS) 5e (130–117 ka). The obvious dispersal route, the Nile, may be ruled out by notable differences between archaeological finds in the Nile Valley and the Levant at the critical time. Further west, space-born radar images reveal networks of—now buried—fossil river channels that extend across the desert to the Mediterranean coast, which represent alternative dispersal corridors. These corridors would explain scattered findings at desert oases of Middle Stone Age Aterian lithic industries with bifacial and tanged points that can be linked with industries further to the east and as far north as the Mediterranean coast. Here we present geochemical data that demonstrate that water in these fossil systems derived from the south during wet episodes in general, and penetrated all of the way to the Mediterranean during MIS 5e in particular. This proves the existence of an uninterrupted freshwater corridor across a currently hyperarid region of the Sahara at a key time for early modern human migrations to the north and out of Africa.
Middle Stone Age | Eemian | neodymium | paleochannel | sapropel
David W. Phillipson, African Archaeology. (Cambridge 21993).
David W. Phillipson, African Archaeology. (Cambridge 32005).
Tomos Proffitt & Ignacio de la Torre, The effect of raw material on inter-analyst variation and analyst accuracy for lithic analysis, A case study from Olduvai Gorge. Journal of Archaeological Science 45 (2014), 270–283.
This study aims to understand what effect, in terms of inter-analysis variation and analyst accuracy, different raw material types have on modern technological analyses of lithic assemblages. This is done through a series of blind analysis tests undertaken on experimentally derived assemblages of cores and flakes. Novelties of our approach include the introduction of refit studies as a method to assess analyst’s accuracy, and the use of statistical tests specifically designed to address inter-analyst variability, common in other disciplines but rarely used in Archaeology. The experimental assemblages were produced from raw materials collected at Olduvai Gorge, an archaeological sequence that has been a source for studies of early human technology for several decades, and where re-analyses of the same assemblages have usually offered different interpretations. The results of the blind analyses are compared to the true technological values obtained through full refit analysis of the experimental material, and suggest that there is a significant difference in terms of inter-analyst variability as well as accuracy related to different raw materials. Our paper highlights the interpretative problems posed by difficult-to-analyse raw materials such as quartzite, and stresses subjectivity present in stone-tool technological studies, which may contribute to explain differences in the interpretation of Early Stone Age lithic assemblages.
Keywords: Lithic technology | Olduvai Gorge | Blind tests | Inter-analyst variability | Analyst accuracy | Refit analysis
Josef H. Reichholf, Das Rätsel der Menschwerdung, Die Entstehung des Menschen im Wechselspiel der Natur. (München 62004).
Peter Richerson & Robert Boyd, Not by genes alone, How culture transformed human evolution. (Chicago 2005).
Humans are a striking anomaly in the natural world. While we are similar to other mammals in many ways, our behavior sets us apart. Our unparalleled ability to adapt has allowed us to occupy virtually every habitat on earth, and our societies are larger, more complex, and more cooperative than any other mammal’s. In “Not by Genes Alone”, Peter J. Richerson and Robert Boyd argue that only a Darwinian theory of cultural evolution can explain these unique characteristics.
“Not by Genes Alone” offers a radical interpretation of human evolution, arguing that our ecological dominance and our singular social systems stem from a psychology uniquely adapted to create complex culture. Richerson and Boyd consider culture to be essential to human adaptation, as much a part of human biology as bipedal locomotion. Drawing on work in the fields of anthropology, political science, sociology, and economics – and building their case with such fascinating examples as kayaks, clever knots, and yams that require twelve men to carry them – Richerson and Boyd convincingly demonstrate that culture and biology are inextricably linked.
In abandoning the nature-versus-nurture debate as fundamentally misconceived, “Not by Genes Alone” is a truly original and groundbreaking theory of the role of culture in evolution and a book to be reckoned with for generations to come.
Jürgen Richter, Altsteinzeit, Der Weg der frühen Menschen von Afrika bis in die Mitte Europas. (Stuttgart 2018).
Heiko Riemer, When hunters started herding, Pastro-foragers and the complexity of Holocene economic change in the Western Desert of Egypt. In: Michael Bollig, Olaf Bubenzer, Ralf Vogelsang & Hans-Peter Wotzka (Hrsg.), Aridity, Change and Conflict in Africa, Proceedings of an International ACACIA Conference held at Königswinter, Germany October 1–3, 2003. Colloquium Africanum 2 (Köln 2007), 105–144.
Despite the debate on early Holocene large bovids from the Nabta-Kiseiba region, faunal data from archaeological sites in the Eastern Sahara speak for an introduction and rapid spread of domestic cattle, goat and sheep around 6000 calBC within a highly mobile hunter-gatherer context. However, wild animals and hunting equipment are the major components of archaeological sites from the 6th millennium. Diversity in relief and water accessibility, and the seasonal influence of winter and summer rains formed the individual conditions of subsistence in which herding played only a minor role. It was not before the onset of deterioration of the Eastern Sahara, around 5000 calBC, and the following population agglomeration in the Nile Valley that herding and plant cultivation became dominant in the predynastic economies which can truly be labelled as the earliest Neolithic in Egypt.
Keywords: Pastro-foragers | domesticated animals | hunting | herding | arrow heads | economic change | Holocene | Neolithic | Egypt
Rowan F. Sage, Was low atmospheric CO2 during the Pleistocene a limiting factor for the origin of agriculture? Global Change Biology 1 (1995), 93–106.
Agriculture originated independently in many distinct regions at approximately the same time in human history. This synchrony in agricultural origins indicates that a global factor may have controlled the timing of the transition from foraging to foodproducing economies. The global factor may have been a rise in atmospheric CO2 from below 200 to near 270 µmol mol-1 which occurred between 15,000 and 12,000 years ago. Atmospheric CO2 directly affects photosynthesis and plant productivity, with the largest proportional responses occurring below the current level of 350 µmol mol-1 In the late Pleistocene, CO2 levels near 200 µmol mol-1 may have been too low to support the level of productivity required for successful establishment of agriculture. Recent studies demonstrate that atmospheric CO2 increase from 200 to 270 µmol mol-1 stimulates photosynthesis and biomass productivity of C3 plants by 25 % to 50 %, and greatly increases the performance of C3 plants relative to weedy C4 competitors. Rising CO2 also stimulates biological nitrogen fixation and enhances the capacity of plants to obtain limiting resources such as water and mineral nutrients. These results indicate that increases in productivity following the late Pleistocene rise in CO2 may have been substantial enough to have affected human subsistence patterns in ways that promoted the development of agriculture. Increasing CO2 may have simply removed a productivity barrier to successful domestication and cultivation of plants. Through effects on ecosystem productivity, rising CO2 may also have been a catalyst for agricultural origins by promoting population growth, sedentism, and novel social relationships that in turn led to domestication and cultivation of preferred plant resources.
Keywords: origin of agriculture, CO2 enrichment, crop domestication, global change, neolithic transition, photosynthesis
Marshall Sahlins, The Original Affluent Society. (Online 1966). <http://delong.typepad.com/files/original-affluent-society.pdf> (2020-06-22).
Hunter-gatherers consume less energy per capita per year than any other group of human beings. Yet when you come to examine it the original affluent society was none other than the hunter’s – in which all the people’s material wants were easily satisfied. To accept that hunters are affluent is therefore to recognise that the present human condition of man slaving to bridge the gap between his unlimited wants and his insufficient means is a tragedy of modern times.
Christoph Schmidt, Karin Kindermann, Philip van Peer & Olaf Bubenzer, Multi-emission luminescence dating of heated chert from the Middle Stone Age sequence at Sodmein Cave (Red Sea Mountains, Egypt). Journal of Archaeological Science 63 (2015), 94–103.
Sodmein Cave in Egypt is one of the rare archaeological sites in north-eastern Africa conserving human occupation remains of a period most relevant for the ‘Out of Africa II’ hypothesis. This underlines the need for establishing a chronological framework for the more than 4 m of stratified sediments ranging from the Middle Stone Age (MSA) to the Neolithic. The lowest layer J hosts huge fireplaces, from which we report luminescence ages of heated chert fragments unearthed from different depths. The ‘multiemission’ dating approach – using both the blue and red TL of each specimen as well as the OSL emission of one sample – allowed identifying the most reliable ages. Samples yield ages between <121 ± 15 ka (maximum age) and 87 ± 9 ka. These data evidence human presence at the site during MIS 5. For integrating Sodmein Cave into the actual discussion of the dispersal patterns of modern humans and to identify potential connections with other sites in the Nile Valley and in the Middle East, a sound and reliable chronology is indispensable.
Keywords: Luminescence dating | Burnt chert | Burnt flint | Egypt | Out of Africa II | Middle Stone Age
Judith Sealy, Isotopic Evidence for the Antiquity of Cattle-Based Pastoralism in Southernmost Africa. Journal of African Archaeology 8 (2010), 65–81.
Pastoralist Khoekhoe people in southern Africa are well known from 17th and 18th century records from the Cape, and from later descendent communities. The Cape Khoekhoen kept large herds of sheep and cattle, which constituted wealth and provided the dairy products that formed dietary staples. The origins and development of this way of life remain contentious. This paper addresses the issue by means of stable carbon and nitrogen isotope analyses of 160 adult human skeletons from the coastal forelands of southernmost Africa. Prior to 2000 bp, hunter-gatherers ate varying mixes of marine and terrestrial foods, but terrestrial C4 grasses (and animals grazing on them) were of relatively minor importance. Sheep (and probably cattle) first appeared in archaeological sites around 2000 bp, but whatever their role in peoples ‘diets, there was no significant shift in the isotope ratios of human skeletons in the first millennium AD. From the early second millennium AD, people began to eat significantly more C4 based foods, probably in the form of animal products (dairy and meat) from animals grazing on C4 grasses. I argue that the most likely reason is that domestic stock – especially cattle – became more important in peoples ‘ diets at this time . There is evidence for a new style of burial, in which the body was interred in a seated, flexed position, and the grave capped with stones. Thus, although living sites remain elusive, important elements of the historically documented Khoekhoe way of life can be identified for the first time in the early second millennium AD. This evidence also shows that a cattle-based economy emerged centuries before Europeans seeking animals to slaughter increased the demand for stock.
Keywords: Later Stone Age | Khoe | diet | domestic stock | herd
Richard W. Wrangham, James Holland Jones, Greg Laden, David Pilbeam & NancyLou Conklin-Brittain, The Raw and the Stolen, Cooking and the Ecology of Human Origins. Current Anthropology 40 (1999), 567–594.
Cooking is a human universal that must have had widespread effects on the nutrition, ecology, and social relationships of the species that invented it. The location and timing of its origins are unknown, but it should have left strong signals in the fossil record. We suggest that such signals are detectable at ca. 1.9 million years ago in the reduced digestive effort (e.g., smaller teeth) and increased supply of food energy (e.g., larger female body mass) of early Homo erectus. The adoption of cooking required delay of the consumption of food while it was accumulated and/ or brought to a processing area, and accumulations of food were valuable and stealable. Dominant (e.g., larger) individuals (typically male) were therefore able to scrounge from subordinate (e.g., smaller) individuals (typically female) instead of relying on their own foraging efforts. Because female fitness is limited by access to resources (particularly energetic resources), this dynamic would have favored females able to minimize losses to theft. To do so, we suggest, females formed protective relationships with male co-defenders. Males would have varied in their ability or willingness to engage effectively in this relationship, so females would have competed for the best food guards, partly by extending their period of sexual attractiveness. This would have increased the numbers of matings per pregnancy, reducing the intensity of male intrasexual competition. Consequently, there was reduced selection for males to be relatively large. This scenario is supported by the fossil record, which indicates that the relative body size of males fell only once in hominid evolution, around the time when H. erectus evolved. Therefore we suggest that cooking was responsible for the evolution of the unusual human social system in which pair bonds are embedded within multifemale, multimale communities and supported by strong mutual and frequently conflicting sexual interest.
Thomas Wynn, The Intelligence of Oldowan Hominids. Journal of Human Evolution 10 (1981), 529–541.
This article uses Piagetian genetic epistemology to evaluate the intelligence of Oldowan hominids. From the analysis of the geometry of two-million-year-old artifacts from Olduvai Gorge it is concluded that the hominids who made the tools possessed pre-operational intelligence. Pre-operational intelligence employs such organizational features as trial-and-error and control of single variables but lacks such important modern features as true classification and pre-correction of errors. Pre-operational intelligence is also typical of modern pongids. This implies that Oldowan hominids were not remarkably intelligent by hominoid standards and that evolution of intelligence was not significant in human evolution until after about 1.6 million years ago, at which time it became an important factor in the rapid increase in reliance on culture.
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