Bronze Age Groups Research Articles

Who venerated the ancestors at the Petit-Chasseur site? Examining Early Bronze Age cultic activities around megalithic monuments through the archaeometric analyses of ceramic findings (Upper Rhône Valley, Switzerland, 2200–1600 BC)

Through the analyses of recovered pottery, this study explores the social dimension of an ancestor cult developed at the Petit-Chasseur megalithic necropolis (Upper Rhône Valley, Switzerland) during the Early Bronze Age (2200–1600 BC). The jar votive offerings and domestic pottery from settlement sites were characterized using a range of spectroscopic and microscopic techniques. Acquired archaeometric data allowed identification of six ceramic fabrics and two types of clay substrate—illite- and muscovite-based—which were used in pottery production. The present article discusses the pottery composition in the light of natural resources available in the region, thus shedding light on raw material choices and paste preparation recipes. The Early Bronze Age people that lived in the Upper Rhône Valley seem to have shared a common ceramic tradition, partly inherited from the previous Bell Beaker populations. The compositional correspondence between the jar offerings and domestic pottery revealed that the majority of the known Early Bronze Age groups partook in cultic activities at the Petit-Chasseur megalithic necropolis.

Enamel thickness per masticatory phases (ETMP): A new approach to assess the relationship between macrowear and enamel thickness in the human lower first molar

Many anthropological studies have examined the functional implications of enamel thickness in human dental crowns. Despite limitations, Enamel thickness (ET) values are still used to infer taxonomic attribution in the genus Homo, and to identify mechanisms of functional adaptation against macrowear. However, only a few studies have tried to describe the possible relationship between ET and dental wear patterns in permanent lower first molars (M1) aiming to observe whether an adaptive response to the environmental and cultural context is detectable. The present work aims to investigate a possible signal of ET adaptive response in M1 (wear stage 3; Molnar, 1971) belonging to individuals who lived between the Neolithic (early 6th millennium BCE) and the Bronze Age (second half of the 2nd millennium BCE) in Croatia to identify any signal of change in dental tissue proportions based on archaeologically documented shifts in population structure and subsistence strategies. In order to do so, we explored 3D Average Enamel Thickness (AET) of the entire crown and wear pattern distribution among individuals and across chronological groups. We then described a new method called “Enamel Thickness per Masticatory Phases” (ETMP) involving the creation of virtual sections cutting enamel and coronal dentine in three parts based on masticatory phases, and explored the distribution of 3D AET accordingly. Finally, we performed geometric morphometric analysis on dental crown to ascertain possible morphological differences between Neolithic, Eneolithic, and Bronze Age groups. Results show that Bronze Age individuals differ from previous groups due to 1) higher values of ET in both the entire crown and specifically in the buccal area, 2) to an extensive wear pattern localized on the buccal side, and 3) to the distal extension of the hypoconid together with an extended mesio-distal shape of the crown. These patterns may represent an adaptive response of dental tissue to varying functional demands (e.g. archaeologically documented dietary shift). The study of ETMP therefore offers a more nuanced method, in addition to morphology and macrowear analysis, to document biocultural processes of change over time in archaeological populations through dental tissues.

Middle Holocene Siberian genomes reveal highly connected gene pools throughout North Asia

The peopling history of North Asia remains largely unexplored due to the limited number of ancient genomes analyzed from this region. Here, we report genome-wide data of ten individuals dated to as early as 7,500 years before present from three regions in North Asia, namely Altai-Sayan, Russian Far East, and the Kamchatka Peninsula. Our analysis reveals a previously undescribed Middle Holocene Siberian gene pool in Neolithic Altai-Sayan hunter-gatherers as a genetic mixture between paleo-Siberian and ancient North Eurasian (ANE) ancestries. This distinctive gene pool represents an optimal source for the inferred ANE-related population that contributed to Bronze Age groups from North and Inner Asia, such as Lake Baikal hunter-gatherers, Okunevo-associated pastoralists, and possibly Tarim Basin populations. We find the presence of ancient Northeast Asian (ANA) ancestry-initially described in Neolithic groups from the Russian Far East-in another Neolithic Altai-Sayan individual associated with different cultural features, revealing the spread of ANA ancestry ∼1,500km further to the west than previously observed. In the Russian Far East, we identify 7,000-year-old individuals that carry Jomon-associated ancestry indicating genetic links with hunter-gatherers in the Japanese archipelago. We also report multiple phases of Native American-related gene flow into northeastern Asia over the past 5,000 years, reaching the Kamchatka Peninsula and central Siberia. Our findings highlight largely interconnected population dynamics throughout North Asia from the Early Holocene onward.

Craniological data on migrations from the West to Eastern Europe in the Post-Catacomb period

In the article the craniology of the post-Catacomb and Middle Volga Abashevo populations in the context of cranial metric characteristics of Neolithic and Bronze Age groups of continental Europe is discussed. The data on 2100 male skulls belonging to 95 samples was analyzed by means of Mahalanobis distances (D²) matrix. The results reveal high level of similarity between the post-Catacomb series and Catacomb East-Manych, Eastern Caucasus (Gintchi) and Fatyanovo-Balanovo samples. Basically these results are in line with archaeological reconstructions of cultural processes in Middle and Late Bronze Age. The most western series, which displays morphologic similarity with the Babino sample, is the Globular Amphora series, while the Corded Ware sample from the Baltic region is similar to the Lolino culture sample. We suggest that the series of skulls from the Pepkino kurgan may be unrepresentative for the Middle Volga Abashevo population, since analogies to its cranial metric profile can be traced only in the late Fatyanovo and Balanovo samples and in one local Yamnaya sample, but are absent in other European populations, including Bell Beaker sample, which is in contradiction with archaeological data.

Dental Data on the Origin of the Early Iron Age Bolshaya Rechka Population in the Upper Ob Area, and the Differentiation Between the Kamen and Bolshaya Rechka Cultures

This dental study addresses the origin of the Bolshaya Rechka people in the Novosibirsk region of the Ob, with reference to the migration of Saka and Sarmatian tribes from the southwest. I compare dental features of southern Kamen and northern Bolshaya Rechka populations inhabiting the entire Upper Ob area. Dental samples from eleven Bolshaya Rechka cemeteries were studied. Findings indicate heterogeneity. Nearly all samples evidence admixture between eastern and western groups. That from Bystrovka-3 takes a separate position, revealing more eastern traits along with those marking the Southern Siberian Upper Paleolithic complex. The results enable us to evaluate the role of Saka and Sarmatian migrants from Kazakhstan, Cis-Urals, and Tian Shan. This role appears to have been relatively minor and likely indirect, upholding the ideas advanced by archaeologists. Bolshaya Rechka and Kamen populations (the latter culture was thought to include the former) are biologically distinct. Bolshaya Rechka displays continuity with local Early Bronze Age groups. The main component of the Kamen population of forest-steppe Altai, on the other hand, was introduced by Saka and Sarmatian immigrants, who, evidently, had not reached the Novosibirsk region of the Ob. Rather than moving on northwards along the Ob from the forest-steppe Altai, they turned west, toward the Tobol-Irtysh watershed.

Origin and mobility of Iron Age Gaulish groups in present-day France revealed through archaeogenomics

SummaryThe Iron Age period occupies an important place in French history because the Gauls are regularly presented as the direct ancestors of the extant French population. We documented here the genomic diversity of Iron Age communities originating from six French regions. The 49 acquired genomes permitted us to highlight an absence of discontinuity between Bronze Age and Iron Age groups in France, lending support to a cultural transition linked to progressive local economic changes rather than to a massive influx of allochthone groups. Genomic analyses revealed strong genetic homogeneity among the regional groups associated with distinct archaeological cultures. This genomic homogenization appears to be linked to individuals’ mobility between regions and gene flow with neighbouring groups from England and Spain. Thus, the results globally support a common genomic legacy for the Iron Age population of modern-day France that could be linked to recurrent gene flow between culturally differentiated communities.

The Ratio of Indigenous to Immigrant Populations in the Western Steppe During the Bronze Age (Based on Cranial Data)

Measurements of ~730 male crania from cemeteries associated with Bronze Age cultures of the steppe and foreststeppe zone of Eastern Europe (Yamnaya, Catacomb, Poltavka, Babino, Lola, and Timber-Grave) were subjected to multivariate analyses. D2 distances between sample centroids were calculated, and non-metric multidimensional scaling was carried out. The results are used to evaluate the proportion of indigenous and immigrant groups during four successive periods—Early Bronze Age, Middle Bronze Age, Middle to Late Bronze Age transition, and Late Bronze Age. The differences between Yamnaya populations are comparable to those between recent groups inhabiting vast territories of Eastern Europe, from Karelia to the Northern Caucasus. The ro le of the substrate component in the origin of Early and Middle Bronze Age groups was considerable. However, virtually no continuity was observed at the Middle to Late Bronze Age transition, when post-Catacomb cultures originated. Continuity with Middle Bronze Age groups is observed in Late Bronze Age samples representing the Timber-Grave people, who combined features of the Catacomb and post-Catacomb people. Factors accounting for such a process may include “pendulum migrations” and temporary reversal of funerary tradition from kurgans to “invisible” fl at burials.

The Origin of the Okunev Population, Southern Siberia: The Evidence of Physical Anthropology and Genetics

Okunev cemeteries in the Minusinsk Basin were compared with 23 other pre-Andronovo series from southern Siberia, and 45 Early and Middle Bronze Age groups from Eastern Europe (24 Yamnaya and 21 Catacomb), using multivariate statistical analysis. While the Afanasyevo admixture in the Okunev population is possible, the hypothesis that the Okunev culture of the Minusinsk Basin originated from the second migration from the Eastern European steppes to southern Siberia in the Early Bronze Age is not supported. It could, however, be applied to people associated with the Okunev-type (Chaa-Khol) culture in Tuva, although these may as well have descended from the Afanasyevans. As concerns the Minusinsk Basin and other regions of southern Siberia except Tuva, the fi ndings agree with the idea of a marked evolutionary conservatism peculiar to the autochthonous populations of that territory, as evidenced by the fact that each of the three Early Bronze Age population clusters—on the Yenisei, in the Altai, and in Baraba—has its own Neolithic ancestors in the same area (this does not concern the Chaa-Khol, the Yelunino, and apparently the Samus populations). The immediate ancestors of the Okunev people can be identifi ed with the Neolithic population of the Krasnoyarsk-Kansk area, and more distant ones with the Upper Paleolithic southern Siberian common ancestors of the Okunev people and the Native Americans. These ancestors are evidenced by both cranial data (indirectly) and genetic data (directly). The la tter suggest that among these common ancestors were the Malta boy and the Afontova Gora II male. The Okunev population, then, is a relic, offering us a unique opportunity to see what the Upper Paleolithic ancestors of the Native Americans may have looked like in their southern Siberian homeland.

Diet and subsistence in Bronze Age pastoral communities from the southern Russian steppes and the North Caucasus.

The flanks of the Caucasus Mountains and the steppe landscape to their north offered highly productive grasslands for Bronze Age herders and their flocks of sheep, goat, and cattle. While the archaeological evidence points to a largely pastoral lifestyle, knowledge regarding the general composition of human diets and their variation across landscapes and during the different phases of the Bronze Age is still restricted. Human and animal skeletal remains from the burial mounds that dominate the archaeological landscape and their stable isotope compositions are major sources of dietary information. Here, we present stable carbon and nitrogen isotope data of bone collagen of 105 human and 50 animal individuals from the 5th millennium BC to the Sarmatian period, with a strong focus on the Bronze Age and its cultural units including Maykop, Yamnaya, Novotitorovskaya, North Caucasian, Catacomb, post-Catacomb and late Bronze Age groups. The samples comprise all inhumations with sufficient bone preservation from five burial mound sites and a flat grave cemetery as well as subsamples from three further sites. They represent the Caucasus Mountains in the south, the piedmont zone and Kuban steppe with humid steppe and forest vegetation to its north, and more arid regions in the Caspian steppe. The stable isotope compositions of the bone collagen of humans and animals varied across the study area and reflect regional diversity in environmental conditions and diets. The data agree with meat, milk, and/or dairy products from domesticated herbivores, especially from sheep and goats having contributed substantially to human diets, as it is common for a largely pastoral economy. This observation is also in correspondence with the faunal remains observed in the graves and offerings of animals in the mound shells. In addition, foodstuffs with elevated carbon and nitrogen isotope values, such as meat of unweaned animals, fish, or plants, also contributed to human diets, especially among communities living in the more arid landscapes. The regional distinction of the animal and human data with few outliers points to mobility radii that were largely concentrated within the environmental zones in which the respective sites are located. In general, dietary variation among the cultural entities as well as regarding age, sex and archaeologically indicated social status is only weakly reflected. There is, however, some indication for a dietary shift during the Early Bronze Age Maykop period.

Life, Health and Death in the Steppe: A Bioarchaeological Study of Bronze Age and Iron Age Pastoralist Populations of the Volga—Don Region, Russia

Major socio-economic, political and climatic changes have shaped the Eurasian steppe region during the Bronze and Iron Ages (3rd millennium BC—4th century AD), yet little is known about the bio-cultural impacts of these permutations on the life, health and death of the pastoralist populations who inhabited this area. This research represents the first attempt to adopt a holistic approach that includes osteoarchaeology, palaeopathology and environmental data to explore the evolution of the health status, diet, and lifestyles of these prehistoric pastoralist communities in the Volga–Don steppe region. The analysis of 385 skeletons derived from 155 kurgans suggests that, despite changes in pastoral mobility and sedentary lifestyles, there was no major change in the diet of Bronze and Iron Age populations, and children from the different cultures were exposed to various stressors. Evidence of interpersonal violence was observed in both the Bronze and Iron Age groups. A diversification of injuries and the appearance of conditions that were almost absent during the Bronze Age indicate that the overall health of Iron Age populations may have deteriorated. Various levels of health-related care to people with disabling diseases and severe injuries, and evidence of surgery, provide insights into the social dimensions of care among these prehistoric pastoralist societies.

Происхождение окуневского населения Южной Сибири по данным физической антропологии и генетики

Для проверки конкурирующих гипотез о происхождении окуневской культуры проведено многомерное статистическое сопоставление четырех мужских краниологических серий из окуневских могильников в Минусинской котловине с 23 другими сериями доандроновского времени из Южной Сибири и 45 сериями раннего и среднего бронзового века из Восточной Европы (24 ямные и 21 катакомбная). Афанасьевская примесь у окуневцев вполне вероятна, однако гипотеза о сложении окуневской культуры Минусинской котловины в результате второй миграции из восточно-европейских степей в Южную Сибирь в эпоху ранней бронзы не подтверждается. Она могла бы быть применима к носителям культуры окуневского типа (чаахольской) в Туве, но эти люди могли быть и потомками афанасьевцев. Результаты анализа серий из Южной Сибири (кроме Тувы) согласуются с мнением о значительной стабильности местного антропологического субстрата. Она проявляется в том, что для каждой из трех групп популяций эпохи ранней бронзы — енисейской, алтайской и барабинской - обнаруживаются неолитические предки на той же территории (к чаахольскому, елунинскому и, вероятно, самусьскому населению это не относится). Непосредственными предками окуневцев следует считать неолитических обитателей красноярско-канского района, более отдаленными — верхнепалеолитических общих предков окуневцев и американских индейцев. О их наличии свидетельствуют данные краниологии (косвенно) и генетики (прямо), причем генетические показывают, что к числу этих предков относились люди со стоянок Мальта и Афонтова Гора II. Реликтовая окуневская группа, таким образом, дает нам уникальную возможность представить себе, как могли выглядеть верхнепалеолитические предки индейцев на своей южно-сибирской прародине.

Diachronic changes in craniofacial morphology among the middle-late Holocene populations from Hehuang region, Northwest China.

This study analyzes craniofacial shape variation in the Hehuang region of Northwest China within a population genetic framework, and takes a diachronic approach to explore the relationship betwee cultural discontinuity and biological continuity/discontinuity in the Hehuang region during the middle to late Holocene. The sample comprises 76 adult skulls from five archaeological sites, ranging from 4,500 to 1,530 BP. 3D geometric morphometrics, multivariate statistics, quantitative evolutionary genetic and biodistance analyses were performed to study the diachronic variation in craniofacial morphology. Analyses were performed on two cranial modules: the face and the cranial vault, across three major diachronic groups representing the late Neolithic (LNA), the Bronze Age (BA), and the Han-Jin dynasty (HD). Average regional FST for both cranial modules was low, indicating relatively greater variation within diachronic groups than among them. While the LNA and BA groups did not show any significant differences in facial and vault shape, significant craniofacial shape changes were detected between the BA and HD groups. The consistent craniofacial morphology during the LNA and the BA, and the shift in morphology between the BA and the HD indicates that cultural discontinuity does not always coincide with biological discontinuity. The Hehuang population evolved in situ with few changes, despite cultural and dietary changes, until the HD when migrations from the Central Plains are associated with extra-local gene flow to the area.

The multiple maternal legacy of the Late Iron Age group of Urville-Nacqueville (France, Normandy) documents a long-standing genetic contact zone in northwestern France

The compilation of archaeological and genetic data for ancient European human groups has provided persuasive evidence for a complex series of migrations, population replacements and admixture until the Bronze Age. If the Bronze-to-Iron Age transition has been well documented archaeologically, ancient DNA (aDNA) remains rare for the latter period and does not precisely reflect the genetic diversity of European Celtic groups. In order to document the evolution of European communities, we analysed 45 individuals from the Late Iron Age (La Tène) Urville-Nacqueville necropolis in northwestern France, a region recognized as a major cultural contact zone between groups from both sides of the Channel. The characterization of 37 HVS-I mitochondrial sequences and 40 haplogroups provided the largest maternal gene pool yet recovered for the European Iron Age. First, descriptive analyses allowed us to demonstrate the presence of substantial amounts of steppe-related mitochondrial ancestry in the community, which is consistent with the expansion of Bell Beaker groups bearing an important steppe legacy in northwestern Europe at approximately 2500 BC. Second, maternal genetic affinities highlighted with Bronze Age groups from Great Britain and the Iberian Peninsula regions tends to support the idea that the continuous cultural exchanges documented archaeologically across the Channel and along the Atlantic coast (during and after the Bronze Age period) were accompanied by significant gene flow. Lastly, our results suggest a maternal genetic continuity between Bronze Age and Iron Age groups that would argue in favour of a cultural transition linked to progressive local economic changes rather than to a massive influx of allochthone groups. The palaeogenetic data gathered for the Urville-Nacqueville group constitute an important step in the biological characterization of European Iron age groups. Clearly, more numerous and diachronic aDNA data are needed to fully understand the complex relationship between the cultural and biological evolution of groups from the period.

Ancient DNA from Chalcolithic Israel reveals the role of population mixture in cultural transformation

The material culture of the Late Chalcolithic period in the southern Levant (4500–3900/3800 BCE) is qualitatively distinct from previous and subsequent periods. Here, to test the hypothesis that the advent and decline of this culture was influenced by movements of people, we generated genome-wide ancient DNA from 22 individuals from Peqi’in Cave, Israel. These individuals were part of a homogeneous population that can be modeled as deriving ~57% of its ancestry from groups related to those of the local Levant Neolithic, ~17% from groups related to those of the Iran Chalcolithic, and ~26% from groups related to those of the Anatolian Neolithic. The Peqi’in population also appears to have contributed differently to later Bronze Age groups, one of which we show cannot plausibly have descended from the same population as that of Peqi’in Cave. These results provide an example of how population movements propelled cultural changes in the deep past.

Cannabis is indigenous to Europe and cultivation began during the Copper or Bronze age: a probabilistic synthesis of fossil pollen studies

Conventional wisdom states Cannabis sativa originated in Asia and its dispersal to Europe depended upon human transport. Various Neolithic or Bronze age groups have been named as pioneer cultivators. These theses were tested by examining fossil pollen studies (FPSs), obtained from the European Pollen Database. Many FPSs report Cannabis or Humulus (C/H) with collective names (e.g. Cannabis/Humulus or Cannabaceae). To dissect these aggregate data, we used ecological proxies to differentiate C/H pollen, as follows: unknown C/H pollen that appeared in a pollen assemblage suggestive of steppe (Poaceae, Artemisia, Chenopodiaceae) we interpreted as wild-type Cannabis. C/H pollen in a mesophytic forest assemblage (Alnus, Salix, Populus) we interpreted as Humulus. C/H pollen curves that upsurged and appeared de novo alongside crop pollen grains we interpreted as cultivated hemp. FPSs were mapped and compared to the territories of archaeological cultures. We analysed 479 FPSs from the Holocene/Late Glacial, plus 36 FPSs from older strata. The results showed C/H pollen consistent with wild-type C. sativa in steppe and dry tundra landscapes throughout Europe during the early Holocene, Late Glacial, and previous glaciations. During the warm and wet Holocene Climactic Optimum, forests replaced steppe, and Humulus dominated. Cannabis retreated to steppe refugia. C/H pollen consistent with cultivated hemp first appeared in the Pontic-Caspian steppe refugium. GIS mapping linked cultivation with the Copper age Varna/Gumelniţa culture, and the Bronze age Yamnaya and Terramara cultures. An Iron age steppe culture, the Scythians, likely introduced hemp cultivation to Celtic and Proto-Slavic cultures.

Estimating C4 plant consumption in Bronze Age Northeastern Italy through stable carbon and nitrogen isotopes in bone collagen

AbstractThe application of biomolecular techniques for the study of food practices in the Italian Bronze Age has revealed an interesting complexity. This is particularly true for the Po plain, in northern Italy, where the use of “alternative” grains (i.e., the millets) has been assessed isotopically through the measurement of stable carbon (δ13C) and nitrogen (δ15N) isotope ratios in human and animal bone collagen at the site of Olmo di Nogara (Verona). This work provides new isotopic data from 12 Early, Middle, and Late Bronze Age sites from western Veneto and Friuli. Data obtained contribute to the understanding of mode and tempo of the spread of new crops in northeastern Italy, which appears to be a hotspot for the study of Bronze Age farming economies in Europe. We have successfully analyzed 146 specimens to find that δ13C values are higher, in a way that we interpret as indicative of C4 plant consumption. Four of the sites analyzed, with a specific chronological indication, show this evidence. We explain this phenomenon as the result of a discontinuous spread of new crops in northeastern Italy at a very specific moment of the Bronze Age. The data presented might call for a reconsideration of food production and consumption among Bronze Age groups of southern Europe.

Tumpline Deformation on Skulls from Late Bronze and Early Iron Age Armenia: A Cause of Enigmatic Cranial Superstructures?

Unintentional cranial modification derived from archaeological or ethnographic contexts has been extensively documented across the globe. We report tumpline deformations (post-coronal depression) from seven sites dated to the Bronze Age and Early Iron Age of Armenia. This study focuses on the gross anatomy and anatomic relations and meaning of two enigmatic, geographically-patterned, quasi-continuous superstructures of the posterior cranium. Collectively known as occipital superstructures (OSS), these traits are the occipital torus tubercle (TOT) and retromastoid process (PR). In 39 individuals with inadvertent tumpline deformation (post-coronal depression), OSS are present. It is proposed that these are genetically underpinned but triggered by chronic activities related to long-term, strenuous, repetitive muscle use, probably starting at a young age. Co-variation of OSS expression and tumpline deformation is consistent with induction by upper body activity being a proximate cause of these superstructures in genetically predisposed individuals. Although tumpline deformations are expressed more strongly in females, we found that males in Bronze Age and Iron Age groups had more robust muscle markings on the skulls.

Biological differences related to cultural variability during the Neolithic in a micro-geographical area of the Iberian Peninsula

This paper presents dental morphological data of Neolithic, Chalcolithic and Bronze Age populations from the Catalan Pre-Pyrenean area. The Neolithic group, in particular, differs from those of surrounding areas in its funerary culture: the building of cists, which is not present in the Sepulcres de Fossa Culture. A minimum number of 118 individuals from this area were studied for this work, and the data were compared with those of other Iberian and European groups. The results indicate that the two micro-regional groups from the Catalan area (Pre-Pyrenean and Pre-Coastal) were biologically different during the Neolithic and the Chalcolithic, but not in the Bronze Age, when they also appeared to be more homogeneous culturally. In addition, both areas differ biologically from coetaneous Italian groups, although those closer to the coast show slightly smaller differences. Finally, the Bronze Age groups also present fewer differences with regard to the Italian Bronze Age’s group. Therefore, the results suggest that the Catalan Neolithic population had two separate origins, related to cultural patterns, and that differences between the groups decreased within time, probably due to trade-related activities. Moreover, the fact that the difference with Italian populations decreased during the Bronze Age suggests major population movements through the Mediterranean that would affect the biological composition of the human groups.

Bioarchaeology of adaptation to a marginal environment in bronze age Western China.

This study examines human adaptation to the 4000 BP climate change event, which is said to have increased the marginality of Inner Asian environments. We propose to define "marginal" environments not in relation to a specific economic activity (e.g., agriculture), but in relation to whether humans living there are physiologically stressed. Three sites in the Hexi Corridor of Gansu were studied, one from the early and two from the late Bronze Age (N = 125). The study includes three indicators of physiological stress: linear enamel hypoplasias (LEH); tibial periosteal lesions; and fertility. The early and late Bronze Age groups were compared to examine whether human physiological stress increased. The percent of individuals with LEH declined dramatically, indicating fewer growth disruptions. Tibial periosteal reactions also changed, from mostly active to mostly healing at the time of death, indicating that frailty declined. Fertility, which is sensitive to changes in population health and resource availability, did not change significantly. Counter to the dominant narrative of environmental deterioration and subsistence system collapse, the Bronze Age residents of the Hexi Corridor show no skeletal evidence that they suffered from resource shortages or struggled to adapt in the fluctuating climate that pertained after the 4000 BP climate event. In fact, this study found that people suffered from less frailty and fewer growth disruptions after the unstable climate had persisted for some time. Therefore, in human biological terms, the Hexi Corridor did not become more marginal for human habitation during the Bronze Age.

Nonmetric cranial trait variation and the origins of the Scythians.

Within the fields of archaeology and anthropology, there is a long history of disputes concerning the origin of the northern Black Sea Scythians. One of the main points of contention is whether the Scythian gene pool was derived from the preceding local Bronze Age population or whether their population history can be connected to invaders from Central Asia. To test these hypotheses, we investigated Late Scythian populations from the northern Black Sea region and compared them to Bronze Age groups from Eastern Europe and Central Asia. We studied a cranial series of five Late Scythian populations from the northern Black Sea region (N = 323), as well as local Bronze Age groups (N = 109), Central Asian Bronze Age groups (N = 79), and Sarmatians (N = 110). Biological diversity was analyzed by the mean measure of divergence (MMD). The Late Scythian population considered in this study proved to be genetically homogeneous, although some connections with the Sarmatians were found. We also revealed similarities between the Scythian groups and the local Bronze Age population of the Srubnaya culture, as well as, to a lesser extent, a group representative of the Central Asian Bronze Age Okunevo culture. The similarities between Late Scythians and various Sarmatian groups could be the result of genetic contacts between the groups, as well as shared genetic origins. The gene pool of the Scythian population likely comprises both local and Central Asian genetic components, though the exact origins and proportion of the eastern component currently remains unknown.