We present results, analyses, and an in-depth historical contextualization of the fieldwork undertaken in 2012 and 2013 at the Kindoki site in the Lower Congo (DRC). This site is linked to Mbanza Nsundi, one of the Kongo Kingdom’s provincial capitals, which turns out to be archaeologically ‘elusive’. Pinpointing its location proved to be particularly challenging. To this end, a historically informed survey methodology was applied that has rarely been implemented on such a scale in Central Africa before. We combined a strategy of systematic test pits with a large-scale 50-m grid approach. A cemetery was identified on Kindoki Hill with distinct but probably contemporaneous quarters of a sixteenth– seventeenth-century settlement on both sides. The cemetery itself contains mainly eighteenth-century burials, in all likelihood of successive high-ranking Nsundi nobles, perhaps even of Nsundi rulers. The foreign, especially Portuguese, ceramics excavated on the hilltop and the hundreds of Venetian and likely Bavarian beads found in the graves are indicative ofMbanza Nsundi’s connection to trade routes linking the Atlantic coast with the Pool region. The most striking discovery is that of a previously unknown type of comb-impressed pottery, from a pit with a calibrated radiocarbon date of AD 1294–1393 (at 2 sigma). This suggests that a settlement had been developing at Kindoki since at least the fourteenth century, which allows us, for the first time, to spatially bridge Kongo history and “prehistory.” For the entire Lower Congo region, only three 14Cdates posterior to AD 1000 were available before the start of our project; 12 have been added for just Kindoki. Nous présentons les résultats, les analyses et la contextualisation historique détaillée du travail de terrain entrepris en 2012 et 2013 sur le site de Kindoki situé au Bas-Congo (RDC). Ce site est associé à Mbanza Nsundi, l’une des capitales provinciales du royaume Kongo, qui s’est révélée ‘élusive’, c-à-d difficile à saisir archéologiquement. Localiser son emplacement s’est avéré être un vrai défi. Pour ce faire, nous avons développé une méthodologie de fouilles, basée sur des données historiques, qui n’avait pas encore vraiment été testée à cette échelle en Afrique Centrale. Nous avons appliqué une stratégie de terrain combinant des tranchées tests systématiques avec des carroyages à grande échelle de 50 m. Sur la colline de Kindoki, un cimetière a été identifié avec de part et d’autre des quartiers distincts, probablement contemporains, témoignant d’une occupation aux 16ème-17ème siècles. Le cimetière luimême contient principalement des inhumations successives datées du 18ème siècle, très probablement celles de nobles Nsundi de haut rang, peut-être même des dirigeants Nsundi. Les céramiques étrangères, principalement portugaises, découvertes au sommet de la colline et les centaines de perles originaires de Venise et probablement de la Bavière trouvées dans les tombes révèlent la connexion entre Mbanza Nsundi et les voies commerciales reliant la côte Atlantique avec la région du Pool. Une découverte très intéressante concerne un type de poterie décorée au peigne imprimé qui était inconnu à ce jour et provient d’une fosse dont la date radiocarbone calibrée est de 1294–1393 AD (à 2 sigma). Ceci suggère qu’une implantation s’est développée à Kindoki depuis au moins le 14ème siècle et nous permet, pour la première fois, de rapprocher spatialement l’histoire et ‘la préhistoire’ kongo. Pour la région du Bas- Congo toute entière, seules trois dates 14C postérieures à 1000 AD étaient disponibles avant que ne débute notre projet. Nous disposon
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Easter Island (or Rapa Nui), internationally renowned for its megalithic statues, is the most isolated inhabited island of the Pacific. Archaeological surveys undertaken fromthe end of the 19th century led to the discovery of the remains of several hundred human individuals. The majority were buried in monuments (funerary stone platform called ahu) or in caves. This paper presents a study of the ancient Easter Islanders' diet through carbon and nitrogen stable isotope analysis of human tooth and bone collagen and, more particularly, evaluates the impact of gender, age, social status and location of burials. The 125 studied individuals are from 16 sites, which date mainly fromthe 17th to the 19th centuries. This anthropological material is housed at the Royal Belgian Institute of Natural sciences and the Father Sebastián Englert Anthropological Museum of Easter Island. One hundred and seven individuals showed well-preserved collagen. The stable isotope data provide new information on ancient Easter Islander dietary habits. They demonstrate gender disparity in access to food resources and show that children were breastfed until 3 years of age. Furthermore, the isotopic signatures cluster according to the place of burial (ahu) indicating family dietary specificities. Finally, our study reveals influences of social status on food intake: individuals from Ahu Nau Nau, which is said to be the royal ahu, display the highest nitrogen and carbon isotope values. A greater consumption of marine products may explain this distinction.
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Background: This study aims to reconstruct the evolutionary history of African shrews referred to the Crocidura olivieri complex. We tested the respective role of forest retraction/expansion during the Pleistocene, rivers (allopatric models), ecological gradients (parapatric model) and anthropogenic factors in explaining the distribution and diversification within this species complex. We sequenced three mitochondrial and four nuclear markers from 565 specimens encompassing the known distribution of the complex, i.e. from Morocco to Egypt and south to Mozambique. We used Bayesian phylogenetic inference, genetic structure analyses and divergence time estimates to assess the phylogenetic relationships and evolutionary history of these animals. Results: The C. olivieri complex (currently composed of C. olivieri, C. fulvastra, C. viaria and C. goliath) can be segregated into eight principal geographical clades, most exhibiting parapatric distributions. A decrease in genetic diversity was observed between central and western African clades and a marked signal of population expansion was detected for a broadly distributed clade occurring across central and eastern Africa and portions of Egypt (clade IV). The main cladogenesis events occurred within the complex between 1.37 and 0.48 Ma. Crocidura olivieri sensu stricto appears polyphyletic and C. viaria and C. fulvastra were not found to be monophyletic. Conclusions: Climatic oscillations over the Pleistocene probably played a major role in shaping the genetic diversity within this species complex. Different factors can explain their diversification, including Pleistocene forest refuges, riverine barriers and differentiation along environmental gradients. The earliest postulated members of the complex originated in central/eastern Africa and the first radiations took place in rain forests of the Congo Basin. A dramatic shift in the ecological requirements in early members of the complex, in association with changing environments, took place sometime after 1.13 Ma. Some lineages then colonized a substantial portion of the African continent, including a variety of savannah and forest habitats. The low genetic divergence of certain populations, some in isolated localities, can be explained by their synanthropic habits. This study underlines the need to revise the taxonomy of the C. olivieri complex.
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