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Los cazadores recolectores del este de Sudamérica ajustaron, durante el Holoceno, sus conductas territoriales a las fluctuaciones climáticas y ambientales. Estas sociedades implementaron una estrategia económica con una tecnología caracterizada por puntas de proyectil en piedra tallada. Estos cazadores fueron responsables de innovaciones técnicas y variabilidad en las formas y dimensiones de las puntas. Dichos cambios fueron estimulados por el menor tamaño de la fauna del Holoceno, la caza en ambientes anegadizos, la disponibilidad de materias primas y la experimentación de nuevas técnicas de propulsión. El sistema técnico buscó resolver los problemas planteados por la movilidad a través del reciclaje de puntas dañadas. Se analizaron 25 puntas de proyectil provenientes del este de Uruguay. Se relevaron aspectos tecno-tipológicos; se empleó lupa binocular (5× a 72×) y microscopio metalográfico (50× a 400×). Los análisis traceológicos, con base experimental, dan cuenta de fracturas en el ápice y confirman que se trata de puntas empleadas en armas arrojadizas. Los rastros registrados y algunos residuos sugieren que estas puntas fueron enastiladas y transportadas en un carcaj. Las observaciones realizadas parecen confirmar que parte de los ejemplares estudiados corresponden a puntas de flecha usadas con arco, una innovación de gran impacto en las tierras bajas.

Burins are a geographic and time-transgressive tool type, found in lithic industries throughout the world. The defining feature of a burin is the administration of a precisely placed blow (i.e., burin blow) on a natural or prepared striking platform at the edge of a blank. Burins were used for various activities, such as fashioning hunting equipment, figurines, musical instruments, or other decorative objects manufactured from wood, antler, or bone. In other settings, researchers have observed burins that were also used as cores, demonstrating the flexibility and utility of this tool type. Here we present the results of technological, typological and functional analyses of three burin assemblages from the Late Paleolithic of Dhofar, southern Arabia. Technological analysis indicates a significant degree of standardized production. Functional analysis suggests that these tools have been used in woodworking activities. Traceological studies suggest that the function of the burin blow was not the creation of an active working face, as often seen in the Southwest Asian and European Upper Paleolithic; rather, the burin blow functioned to stabilize the truncation and working edge of the tool. Traces of use have been identified mainly on the wide truncations, indicating that the artifacts were likely used to plane broad wooden surfaces. From these observations, we infer that woodworking was a significant component of Late Paleolithic human activity in Dhofar.

Sítio do Meio, discovered in the 1990s, showed a sedimentary sequence clearly composed of two sets of deposits separated by a zone of large rockfall from the massive collapse of the shelter's overhang. The bottom set, slightly more than 60 cm thick, was trapped between the bedrock (upon which it rested) and the lower part of the roof fall (reaching more than 1 m in the excavation area), and yielded some charcoal without other archaeological material. New excavations, however, have revealed the presence of artifacts, additional charcoal, and an alignment of sandstone blocks providing clear boundaries for the artifact concentration. The typological and technological composition of the artifacts is classic, with tools made by shaping high-quality quartz pebbles and tools made on shaping chips or on chips obtained by bipolar percussion of quartz blocks. Quartzite was also used, but only in the manufacture of larger tools, of certain types. The toolkit is made of several convergent pieces, denticulates, rostres, scrapers, and end scrapers. Radiocarbon dating results indicate a Pleistocene age, corresponding to the end of the mid-Upper Pleistocene (MIS3). These dates confirm that Sítio do Meio is the seventh Pleistocene stratigraphic sequence known from a 20-km-radius zone, coming from different sedimentary horizons, testifying to a human presence that extends from MIS3 until the middle Holocene, in this region of Piauí. Particularly, we observed that this occupation still has periodic gaps, with phases of occupation occurring in either short or long periods. With the new data, we are able to consider the cultural specificities of each set in the context of climate data to better understand the diversity of occupation within a single territory, for example behavioral variation in the management of space, adaptive responses to environmental pressures, or potentially both at the same time.

Cueva de Chaves represents a paradigm of a fully Neolithic ex-novo occupation. However, despite its importance within the chrono-cultural framework of the Iberian Prehistory, there is a lack of empirical evidences about the site's economic organization. While the herding of domesticated animals has been well-documented, agricultural and crafting activities have not been fully characterized. In this paper, we advance a socioeconomic interpretation of the flaked stone assemblage to identify the production processes in which lithic tools were involved. The results of the traceological analysis indicate that both animal and vegetal resources were exploited; food and craft production activities, which could not otherwise have emerged from the archaeological record, have been recognized. A mixed farming economy was practised at Cueva de Chaves, the ‘functional spectrum’ of which can be compared to the one of other open-air stable settlements of the western Mediterranean.

•Broaden the technological spectrum linked with the Epipalaeolithic hunter-gatherers.•Demonstrate a diversified use of the shells as adornments, food and tools also in archaeological contexts located some distance from the coastline.•Correlation among the different technological elements that make up the hunter-gatherers’ toolkits, through global analysis of the different types of elements that compose them.•From a methodological point of view, demonstration of the potential of use-wear methodology to reconstruct the productive strategies of human groups.

•Level 2 at El Horno has yielded lithics assigned to upper Magdalenian occupations.•Data on the provenance of flint shows the catchment area covered a large radius.•The different chaînes opératoiresvary significantly depending on the raw material.•The assemblage is compatible with débitagewith great availability of blanks.•Use-wear analysis has revealed a wide range of activities carried out at the site.