Stone Age Artefacts Research Articles

The Zambia Rift Valley research project: Exploring human evolution at the crossroads of Africa

Key evolutionary events in hominin evolution occurred between 3.5 and 2.4 Ma, including the origins of flaked tool technology and the first appearance of the genera Homo and Paranthropus. This period remains poorly understood, however, because deposits of this age are rarely exposed across Africa. The Luangwa River Valley of eastern Zambia is part of the southernmost extension of the East African Rift System; a fossil femur from South Luangwa, identified as Theropithecus cf.darti, hints at the presence of fossiliferous beds of this age in the Luangwa Valley. Additionally, Middle Pleistocene fossils and Early and Middle Stone Age artifacts have also been recovered in sediments adjacent to the Luangwa River. Fossils from these deposits could contribute data on the diversification of hominins and mammals that occurred during the Plio-Pleistocene. The Luangwa River also supports a rich modern mammalian community that represents a critical analogue for reconstructing hominin paleoenvironments. However, no systematic ecological characterizations of living or past mammalian communities of the Luangwa River Valley have been completed. The newly initiated Zambia Rift Valley Research Project (ZRVRP) will analyze the ecology of modern and fossil Luangwa River mammalian and human communities using dental microwear, enamel and collagen isotopic composition, the distribution of bones, fossils, and vegetation on the landscape, and archaeological materials. Patterns of paleoenvironmental change, climatic seasonality, and hominin landscape use over time will provide important comparative context for other Plio-Pleistocene sites. Here, we describe the goals, methods, and community engagement of the ZRVRP, and some challenges involved in launching new paleoanthropological field research.

Hydroclimatic and geochemical palaeoenvironmental records within tufa: A cool-water fluvio-lacustrine tufa system in the Wadi Dabsa volcanic setting, western Saudi Arabia

A series of uncharacterised tufa deposits within the lowland volcanic provinces of western Saudi Arabia are investigated here in order to account for their presence and to examine their utility as a palaeoenvironmental archive. The Wadi Dabsa basin, in the Harrat Al Birk, is part of the Saharo-Arabian region, where there is increasing evidence for multiple hominin dispersals during windows of reduced aridity during the last ~400 ka of the Late Quaternary. This first and detailed petrological and geochemical characterisation of these tufa carbonates is particularly important for palaeoenvironmental and climatological reconstruction at a site that contains a major concentration of Early and Middle Stone Age artefacts. We aim to determine the nature of deposition, to answer whether these are cool, freshwater tufa or hydrothermal travertine, and to establish what the tufa settings, stratigraphies and facies reveal about the hydroclimatic regime in this semi-arid environment.A widespread lacustrine-paludal and fluvial tufa system is preserved, as well as topographically-controlled tufa barrages and cascades. Observable sections, exposed by incision, reveal a thickness of tufa deposits of 3 to 6 m in places, which contain two packages of tufa-cemented conglomerate facies. This allows us to provide a conceptual model for the deposition of semi-arid tufa, based on existing type sites in the Naukluft Mountains of Namibia and the Ebro Basin of Spain. The varied topography within this volcanic harrat provides a setting at Wadi Dabsa that combines the low-lying lacustrine-paludal model from Spain with the steeper and higher-energy model from Namibia. The two tufa-cemented bedload units and the evidence for post-depositional erosion of other tufa facies indicates a shifting hydroclimatic regime, with episodes during which the basin contained water and there was steady flow in the fluvial channels, alternating with episodes of high-energy flashy flows.Geochemical analysis using 87Sr/86Sr isotopic ratios (0.7049 to 0.7056 with one sample at 0.7062) and stable carbon isotopes (−12.9 to −6.3‰) reveal that these are cool-water tufas were deposited from meteoric water that has interacted with both metamorphosed limestone in the Asir Escarpment and the mafic metavolcanic bedrock of the Wadi Dabsa Basin, without a geothermal influence. These tufa are low-concentration‑magnesium calcite, with traces of quartz (to a maximum of 3%) and other silicates. Some samples have ≤7.5% palygorskite, which along with petrological evidence for microbial filaments suggests the importance of biomineralisation by cyanobacteria within some of these tufa. Petrological analysis shows the fabrics are dominated by micrite cements with some microspar, and very little post-depositional alteration. Where samples are banded, this reflects variation in calcite crystal size as opposed to any striking variations in mineralogical composition. Oxygen stable isotopic composition (−14.6 to −1.9‰) indicates deposition from an isotopically more depleted rainfall source than the modern day, noting additional corrections for unknown past temperature and any other fractionation effects are needed. Depleted rainfall sources in this region may relate to either a far-travelled Atlantic moisture source or a higher-intensity Indian Ocean monsoon source, or some combination.

Preserving the Nieuwdonk collection, a hidden Pleistocene mammal assemblage from the Flemish Valley (Berlare - Belgium)

In the midst of the coronavirus pandemic, the municipality of Berlare (East Flanders, Belgium) acquired an important collection of Late-Pleistocene remains from the former Nieuwdonk quarry (near Uitbergen and Overmere, province of East Flanders). This previously private collection comprises a diverse assemblage of Pleistocene mammals from the Flemish valley and covers an important part of Belgium's Quaternary fossil record, offering a window into the regional biodiversity of the last Ice Age and Interglacials (ca. 10 Ka - 126 Ka). Within the collection, various remains (318 specimens) of roughly 20 different taxa are represented, as well as reworked Tertiary ichnofossils and Stone Age artefacts, including a bone tool. Although sampling bias occurred during collecting in the 1970s, it still counts as one of the most complete Pleistocene collections from this classic location within the Scheldt basin and Unesco Global Geopark (Schelde Delta). As a result of years of poor storage conditions, almost all of the specimens suffered from desiccation and pyrite decay. A restoration project was set up during the coronavirus pandemic with restrictions imposed by the Belgian government on daily activities. In this article, we focus on the lessons we learned from both the restoration and inventorisation project during the pandemic, as well as the challenges faced in transitioning a former private collection into a public one.

Later Stone and Iron Age Cohabitation at the Nsongezi Open-Air Site, Western Uganda

Abstract This research at the Nsongezi open-air site examines the intergenerational artefacts at a site where the first Stone Age artefacts were identified in Uganda. The purpose was to examine the nature and cause of the mixed Later Stone Age (LSA) and Iron Age (IA) artefacts in the same stratigraphic context at Nsongezi. The specific objectives included examining the ceramic assemblage, discussing the nature of interactions between the Later Stone Age and Iron Age people and accounting for why and how the mixture of artefacts occurs at Nsongezi. Using a documentary review, archaeological survey, and excavation, the research re-examines the theories of displacement and coexistence concerning the LSA and IA material mixture, which has always been dismissed as a disturbance of stratigraphic contexts. Guided by the Law of superimposition, the association of archaeological material from different cultural periods such as the Later Stone Age and Iron Age artefacts at Nsongezi is attributed to four phenomena. First is the cultural interaction of distinct LSA and IA populations. Secondly, the LSA populations may have adopted Iron Age technology and pottery while continuing with some of the LSA technology and pottery. Thirdly, the Iron Age populations occupied the LSA sites previously abandoned, and some of the LSA peoples occupied the old Iron Age sites as the two groups crisscrossed the region in shifting agricultural and hunter-gatherer economies. Finally, the mixed LSA and Iron Age deposits might have resulted from post-abandonment taphonomic processes. Therefore, the social interactions between the LSA and IA at Nsongezi challenge the dominant narrative that the IA populations used their metal technology’s superiority to displace and absorb the LSA people.

New geomorphological and archaeological evidence for drainage evolution in the Luangwa Valley (Zambia) during the Late Pleistocene

This is the first systematic investigation of two distinctive geomorphological features recorded in the central Luangwa River valley, Zambia. A series of low hills was found to be capped by thin (~1 m) gravel deposits containing stratified Stone Age artefacts. More widespread gravels occur on the margins of the Luangwa River floodplain lacking stratified artefacts. The previously unreported hilltop deposits are interpreted as remnants of a dissected land-surface, and the valley floor gravels as redeposited clasts from c. 20 m of down-cutting. Clast analysis and drainage basin size analysis support a hypothesis of gravel deposition by unconstrained debris flows from the distant Muchinga escarpment, or from an intermediate zone. Excavation of a perched deposit revealed a coarsely stratified Stone Age record indicating periodic emplacement of artefact-bearing gravels over an extended period. Deposition of these perched gravels continued into the Late Pleistocene (~77 ka), based on OSL dating, after which the current dissected landscape formed. We hypothesize further, based on a regional record of landscape instability and core data from Lake Malawi, that fan formation in the valley was linked to periods of extended aridity and reduced vegetation cover followed by episodic erosional events on the return to wetter conditions. We argue that the subsequent dissection of the land-surface is the end state of a sequence of responses to base-level changes and climate change.

English

The current fast growth of the city of Dodoma in central Tanzania threatens cultural heritage materials scattered on the landscape. However, natural processes such as weathering and erosion also add to this threat. Earlier, we reported on the existence of two cultural traditions on this landscape, the Middle Stone Age artefacts and the much younger Wambambali tradition based on pottery, grinding stones and remains of collapsed buildings. This paper presents qualitative data about the latter tradition from the perception of elders. Although our main focus was on the Wambambali tradition, elders broadened our scope and so we discuss the Wambambali on the wider perspective that includes succeeding communities, the Wagogo. Interview and focus group discussion techniques were used to collect data. The current whereabout of the Wambambali people is not known but there are two suggestions: The majority went south while a small group may have gone to the north. On the other hand, the Wagogo communities are formed by founders from different ethnic groups and regions and elders involved in our research predominantly trace their origins to the Hehe and Bena communities in today’s Iringa/Njombe regions. The collective name for these incoming groups came to be known as Wagogo.   Key words: Origin, disappearance, Wambambali tradition, Wagogo, cultural heritage.

Eighteenth-century visions of the Stone Age

Archaeological concepts of prehistory and the Stone Age are rooted in nineteenth-century scientific discoveries, which extended the human past much further back in time than was previously thought. Without this deep past, the disciplines of archaeology and history would not be what they are today. However, when the division of prehistory into the ages of stone, bronze, and iron was introduced in 1836, it was already an old idea. Stone Age artefacts and the initial phase of human history were discussed in the eighteenth-century academic world, even though the periodisation of history was constructed differently. In the philosophy of the Enlightenment several ideas surfaced which were essential to the formation of archaeology as a scientific practice, and which still affect the way the prehistoric past is imagined. This article examines the concept of a prehistoric, furthest past in Finnish scientific texts, within the framework of eighteenth-century Swedish traditions of science and historiography. How did the scholars in the Academy of Turku view Stone Age artefacts that had a multi-faceted nature in the antiquarian tradition? In what way did their visions of the earliest phase of the Nordic past set up later nationalistic narratives about prehistory?

Flying Daggers, Horse Whisperers and a Midwinter Sacrifice: Creating the Past during the Viking Age and Early Middle Ages

This paper sets out to trace the life history of a horse skull found in a bog in Scania in the year 1900. A parallel is drawn between the find of the horse and the famous painting, "Midwinter Sacrifice" by Carl Larsson. The story of the horse has opened up a discussion on how material culture is created and recreated in time and space, resulting in completely new communicative fields. The manifestation of the past and the reuse of Stone Age places and artefacts are brought into focus when the author discusses the location where the horse skull was originally found.

A Late Pleistocene human humerus from Rusinga Island, Lake Victoria, Kenya

In 2010, a hominin right humerus fragment (KNM-RU 58330) was surface collected in a small gully at Nyamita North in the Late Pleistocene Wasiriya Beds of Rusinga Island, Kenya. A combination of stratigraphic and geochronological evidence suggests the specimen is likely between ∼49 and 36 ka in age. The associated fauna is diverse and dominated by semiarid grassland taxa. The small sample of associated Middle Stone Age artifacts includes Levallois flakes, cores, and retouched points. The 139 mm humeral fragment preserves the shaft from distal to the lesser tubercle to 14 mm below the distal end of the weakly projecting deltoid tuberosity. Key morphological features include a narrow and weakly marked pectoralis major insertion and a distinctive medial bend in the diaphysis at the deltoid insertion. This bend is unusual among recent human humeri but occurs in a few Late Pleistocene humeri. The dimensions of the distal end of the fragment predict a length of 317.9 ± 16.4 mm based on recent samples of African ancestry. A novel method of predicting humeral length from the distance between the middle of the pectoralis major and the bottom of the deltoid insertion predicts a length of 317.3 mm ± 17.6 mm. Cross-sectional geometry at the midshaft shows a relatively high percentage of cortical bone and a moderate degree of flattening of the shaft. The Nyamita humerus is anatomically modern in its morphology and adds to the small sample of hominins from the Late Pleistocene associated with Middle Stone Age artifacts known from East Africa. It may sample a population closely related to the people of the out-of-Africa migration.

Pleistocene large reptile tracks and probable swim traces on South Africa’s Cape south coast

The Cape south coast of South Africa contains a wealth of Pleistocene vertebrate trace fossil sites in aeolianites and cemented foreshore deposits. Published studies have described mammal and avian tracksites identified along this coastline. We report here on a number of Pleistocene palaeosurfaces within the Garden Route National Park that exhibit tracks of large reptiles, including probable swim traces. The tracks were probably made by more than one species, and may include a crocodylian. There are no extant reptiles in this coastal region capable of making such tracks and traces, which probably represent an indication of a previously more extensive range for the Nile crocodile and a monitor lizard. These findings demonstrate the potential for ichnology to complement the traditional body fossil record. Two Middle Stone Age stone artifacts were found embedded in one palaeosurface containing multiple reptile trackways. These discoveries have implications for the understanding of Pleistocene palaeoenvironment and palaeoclimate – in an area which is important in the study of modern human origins.
 Significance:
 
 Large reptile Pleistocene fossil tracksites have recently been discovered on the Cape south coast of South Africa where there are no previous such records, and no reptiles of this size are currently found in the region.
 These sites include the first reported probable reptile swim traces in Africa and one tracksite also contained two Middle Stone Age artifacts.
 These discoveries have implications for Pleistocene environments and climate on the Cape south coast.

Study of the Stone Age in the Republic of Armenia (Part 1 – Lower Palaeolithic)

The area encompassing the modern Republic of Armenia lies within the Armenian highlands and is situated at the very core of a dynamic corridor between Africa and Eurasia. As such, Armenia proves critical for understanding the initial stages of human settlement and the formation of ancient civilisations in the Near East and beyond. Stone Age artefacts have been known to exist within the territory of Armenia since the end of the 19th century, and they indicate that the area attracted a variety of Stone Age populations, from early hominids to early complex societies of the Chalcolithic. Presented work is the first attempt to summarise the results and achievements of the Stone Age archaeology in Armenia which is counting its history more than a century.

Green Saharas, Grey Markets: Commercial Exploitation of North African Prehistory, an Overview

The collection-driven destruction of the archaeological record by artefact hunters not only threatens to obliterate part of the world’s cultural heritage, but also profoundly affects our ability to understand the human past of the region. This text takes a preliminary look at the material and archaeological consequences of a little-known aspect of the antiquities market, the gathering of surface finds to fuel the online collectors’ market in ancient lithic tools. It attempts to characterise the dynamics and effects of this commerce on the basis of a survey of the internet trade in Stone Age artefacts from North Africa and how they reach and are spread in the market countries. It demonstrates that the effects of these activities are having a devastating effect on parts of the archaeological record of the source countries.

A geological explanation for occupation patterns of ESA and early MSA humans in Southwestern Namibia? An interdisciplinary study

Since 2002 extensive studies have been carried out on the surface scatters of Early and Middle Stone Age (ESA and MSA) artefacts in western Namibia, with additional studies in north-central and southern Namibia. The distribution of intense artefact scatters coincides with geological formations that contain quartzitic sandstones that were the preferred lithic resource for tool manufacture. Away from these rocks, surface artefacts still occur but with much less frequency.In this, the first ever large-scale survey of surface scatters from the Palaeolithic, it is argued that despite loss of buried context, surface studies offer information on Palaeolithic lifestyles that cannot be obtained from excavation alone. It is shown beyond doubt that on flat surfaces away from streams larger cutting tools are likely to remain roughly where they were dropped indefinitely. By use of the Edge Test, a digital program to measure amount of section mass lost from artefact edges, the relative age of different typologies from surface contexts can be demonstrated.The evidence from Western Namibia suggests that choice of settlement areas in the ESA and early MSA was determined not only by available water but also by access to quality lithic raw material, and that early humans were accomplished field geologists. To a large extent the geology map is the key to ESA and early MSA archaeology.

Чехословацький період археології Закарпаття

The paper is devoted to the results of studies of ancient history on the territory of contemporary Transcarpathian province of Ukraine during the period of it being a part of Czechoslovakia (1919–1939). It was an important stage of establishment of Transcarpathian archaeological science which began its development in the middle of the 19th century from simple collecting of antiquities. In 1929 a county museum was opened in Mukachevo which became an important centre of collection, systematization, and museumification of local artifacts. During that period the ancient history of the region was studied by Czechoslovak archaeologists from the Institute of Archaeology of Czechoslovak Academy of Sciences. Among them, one should name J. Bem, J. Skutil, and J. Eisner. They carried out excavations of archaeological artifacts of the region from different epochs: Paleolithic, Neolithic, Copper and Bronze Ages, Early Iron Age. Due to the efforts of J. Bem collection of Transcarpathian antiquities was systematized, chronology and cultural attribution of numerous material findings were determined. He participated in the excavations at Neolithic and Eneolithic settlements in Nevetlenfolu (Vynohradiv district) and Diyda (Berehovo district) as well as Mala Hora in Mukachevo. Results of the studies enable one to conclude that in the Neolithic epoch this territory was within the area where the culture of linear band pottery was spread. Bearers of this culture practised mattock arable farming, cattle breeding, worshipped the foremother woman. The Stone Age artifacts on the territory of the region were studied by J. Skutil. In the neighbourhood of Berehovo (Mala Hora) and Mukachevo (Kamyanka and Halish hills), he examined a number of Paleolithic locations where he collected several dozens of chalcedony and quartzite objects. They are attributed to the middle and late Paleolithic Age. Local antiquities were also studied by local amateur archaeologists, J. Jankovich, Zatloukal brothers, P. Sova. Having acquired necessary knowledge and recommendations from the Czechoslovak researchers for field studies and documentation of the materials found, they joined the studies of artifacts of an extensive time span – from the Stone Age till Early Mediaeval period. J. Jankovich with the participation of J. Bem performed excavations at a burial mound of the early Iron Age in the village of Kushtanovytsia (Mukachevo district). Two ways of the location of cremation remnants in urns under the mound were documented: at the old level and below it. In 1931 he began the investigation of Slavic mound necropolis in Cherveniovo (Mukachevo district). The excavations revealed cremation burial sites with remnants positioned in urns at the old level or gathered in clusters. The Zatloukal brothers carried out excavations of a ground cremation necropolis in Stanovo (Mukachevo district). The remnants were buried in shallow pits without any external signs and were accompanied by two-three bowls filled with food or favourite things of the decedent. In literature, they are referred to as the Northern-Tysa urn burials of the Late Bronze Age. Key words: settlement, Transcarpathia, burial tomb, Czechoslovakian period.

A functional investigation of southern Cape Later Stone Age artefacts resembling aerophones

This paper describes possible sound-producing artefacts from two Later Stone Age deposits in the southern Cape, South Africa. Implements previously described as a ‘wirra wirra’ or ‘pendant’ from Klasies River main site (KRM), a ‘woer woer’ or ‘bullroarer’ and four ‘pendants’ from Matjes River (MR) are analysed and their sound producing qualities assessed through an actualistic research programme. For comparative purposes, a replica of an ethnographic ‘spinning disk’ was also spun and its sound recorded. All of the implements, except the MR ‘woer woer’ produced a sustained, pulsed, whirring sound when spun. Minor adjustments to the MR 5135 replica resulted in successful sound production. The frequency range of the KRM replica and ethnographic KK058 implement produced a frequency variation of between 52 Hz and 200 Hz. The frequency range of the pendant replicas varied from 55.55 to 250 Hz, comparable to other bullroarers. Spinning produces use-wear predominantly on the left laterals of the perforations, whereas pendant use produces use-wear along the upper sector of the perforation, thus allowing us to distinguish these two uses based on the placement of use-wear. We conclude that one of the bone artefacts previously thought to be a pendant, MR 40, most likely functioned as an instrument to produce sound. This investigation thus experimentally confirms that earlier hypotheses that the ‘wirra wirra’ from KRM and the ‘bullroarer’ from MR were aerophones are judicious. In addition we demonstrate for the first time that some archaeological pendants, such as MR 40, may have been used as free aerophones or bullroarers.

Stone age artefacts from the recent prehistoric explorations in the Manjira river basin of the Telangana State: A Preliminary Study

Stone age artefacts from the recent prehistoric explorations in the Manjira river basin of the Telangana State: A Preliminary Study

Geomorphology, soils and palaeosols of the Chencha area (Gamo Gofa, south western Ethiopian Highlands)

The landscape of the Chencha Highland (south western Ethiopia) is characterized by flat plateau bordered by steep slopes affected by landslides and dissected by concave valleys and gullies. Coalescing alluvial fans are found along the eastern piedmont at the transition to the Lake Abaya shores. A major rift-plateau escarpment, with minor synthetic and antithetic faults, is located along the eastern slopes of the highlands. Soil erosion is a widespread process and the soil cover is usually thin and discontinuous. Immature Cambisols formed on colluvial deposits containing lithic tools, pottery fragments and charcoal represent the most recent phase of soil formation. They are related to the clearance of the original forest cover and the introduction of extensive agricultural and pastoral practices. On the slopes these soils locally unconformably overlie reddish, strongly weathered buried Nitisols and Luvisols that can be classified as Palaeoedlisols with formation of saprolite. Thicker and better preserved Palaeoeldisols can be found on the summit plateau, due to reduced runoff erosion. Different generations of clay illuviation indicate that they underwent polycyclic processes, recording soil processes probably older than Holocene. Along the slopes, gully erosion exhumed a palaeo-gully system infilled by colluviums of soils and buried soils containing Middle Stone Age artifacts suggesting that important slope degradational processes occurred also during the Late Pleistocene. Buried brownish soils in these infillings show moderate clay illuviation that indicates short-lived climatic amelioration and phases of slope stability.

Early Human Occupation at al-Jamrab (White Nile Region, Central Sudan): A Contribution to the Understanding of the MSA of Eastern Africa

AbstractThe middle reaches of the Nile River play a key role in the current models about the diffusion of modern Humans out of Africa, nevertheless the Early and the Middle Stone Age (Early Palaeolithic and Middle Palaeolithic) in central Sudan are poorly known. On-going investigation at al-Jamrab (White Nile region) highlights the archaeological potential of the central Sudan and illustrates the importance of an integrated approach combining archaeological excavation and palaeoenvironmental reconstruction for understanding cultural site formation and post-depositional dynamics. The stratigraphic sequence at al-Jamrab includes a thick cultural layer rich in Early and Middle Stone Age artefacts, preserved in a deeply weathered palaeosol developed on fluvial sediments. The cultural layer includes a two-fold human occupation covering the Middle Stone Age, with Acheulean and Sangoan bifacial artefacts, although an Early Stone Age/Middle Stone Age transitional phase cannot be excluded. The artefact-bearing unit is attributed to the Upper Pleistocene based on preliminary OSL dating, the local palaeoenvironmental context, and strong pedogenetic weathering. Considering the paucity of archaeological data for the Pleistocene of Sudan and the importance of this region in the study of human dispersal out of Africa, this preliminary work on a new site and its associated stratigraphic context provides insights into the early peopling of Sudan and adds one more tessera to the Eastern Africa picture.

Acheulean Sites at Makuyuni (Lake Manyara, Tanzania): Results of Archaeological Fieldwork and Classification of the Lithic Assemblages

This study focuses on the previously marginally known Middle Pleistocene culture in the surroundings of Makuyuni village, located east of Lake Manyara (northern Tanzania) in the East African Rift System (EARS). Recent surveys resulted in the discovery of 56 new sites. Besides the discovery of Middle Stone Age (MSA)/Later Stone Age (LSA) artifacts and exclusive fossil sites, 45 sites yielded varying amounts of Acheulean artifacts that were recorded and collected during the survey. The majority were surface finds, with additional artifacts retrieved from test excavations. Based on technological and chronological classification, the vast majority of the assemblage was attributed to the Middle Acheulean, with a few artifacts dated to early Late Acheulean. Chronometric dating places the Makuyuni finds to between 630,000 and 270,000 years BP, with the majority of artifacts belonging to an earlier period between 630,000 and 400,000 years BP. A key result is the discovery of artifacts at the contact zone between the lacustrine (lower) and the terrestrial (upper) member of the Manyara Beds, which allows a stratigraphic attribution of the artifacts for the first time. It suggests that hominins exploited the landscape along the shoreline of the paleolake Manyara during the early Middle Pleistocene.

The age of the hominin fossils from Jebel Irhoud, Morocco, and the origins of the Middle Stone Age.

The timing and location of the emergence of our species and of associated behavioural changes are crucial for our understanding of human evolution. The earliest fossil attributed to a modern form of Homo sapiens comes from eastern Africa and is approximately 195 thousand years old, therefore the emergence of modern human biology is commonly placed at around 200 thousand years ago. The earliest Middle Stone Age assemblages come from eastern and southern Africa but date much earlier. Here we report the ages, determined by thermoluminescence dating, of fire-heated flint artefacts obtained from new excavations at the Middle Stone Age site of Jebel Irhoud, Morocco, which are directly associated with newly discovered remains of H. sapiens. A weighted average age places these Middle Stone Age artefacts and fossils at 315 ± 34 thousand years ago. Support is obtained through the recalculated uranium series with electron spin resonance date of 286 ± 32 thousand years ago for a tooth from the Irhoud 3 hominin mandible. These ages are also consistent with the faunal and microfaunal assemblages and almost double the previous age estimates for the lower part of the deposits. The north African site of Jebel Irhoud contains one of the earliest directly dated Middle Stone Age assemblages, and its associated human remains are the oldest reported for H. sapiens. The emergence of our species and of the Middle Stone Age appear to be close in time, and these data suggest a larger scale, potentially pan-African, origin for both.