Use of stone hammer tools and anvils by bearded capuchin monkeys over time and space: construction of an archeological record of tool use

Wild bearded capuchins (Sapajus libidinosus) in the cerrado (seasonally dry savannah-like region) of Brazil routinely crack open several species of palm nuts and other hard encased fruits and seeds on level surfaces (anvils) using stones as hammers. At our field site, their nut cracking activity leaves enduring diagnostic physical remains: distinctive shallow depressions (pits) on the surface of the anvil, and cracked shells and stone hammer(s) on or next to the anvil. A monthly survey of the physical remains of percussive tool use at 58 anvils in our study site over a 36-month period revealed repeated use, seasonal consistency, temporal variation, landscape-scale patterning, appearance of new hammers and transport of existing hammers to new anvil sites. Artefactual evidence of the temporal and spatial pattern of tool use collected in the survey is in correspondence with concurrent direct observation of monkeys using and transporting tools at this site. Shell fragments endure for years above ground, suggesting that they may also endure in the strata around anvil sites. The bearded capuchins provide an opportunity to study the construction of percussive tool sites suitable for archeological investigation concurrently with the behavior responsible for the construction of these sites. We suggest several lines of inquiry into tool sites created by capuchin monkeys that may be useful to interpret the archeological evidence of percussive tool use in early humans. Archeologists should be aware that transported stone materials and artificial durable landscape features may be the result of activity by non-human animals.     

The use of predictive modelling to target Neolithic settlement and occupation activity in mainland Scotland

A central aim of Neolithic studies in Europe is to understand settlement or domestic activity of the first agriculturalists. In Scotland, the continued absence of unambiguous Neolithic settlement or domestic occupation activities on the mainland remains an unresolved issue. It is proposed that areas attractive for settlement and occupation activities may be identified by constructing GIS-based models of sites believed to be related to settlement or occupation activities, including chambered cairns, timber halls, and sites containing pit-digging episodes. Statistical analyses undertaken in this process suggest new insights into the locations of the chambered cairns, timber halls, and pits. Finalised models are constructed and desktop assessments are conducted to examine model performance. Research priorities for improving significant environmental variables driving the current models are identified.     

A microarchaeological approach for the study of pits

Abstract

The study of the technology underlying pre-industrial storage structures has an interest from an anthropological and archaeological perspective, in terms of the evolution of key cultural and cognitive capabilities, often related to the transition to food production.

Microarchaeological techniques offer a unique perspective on the study of pre-industrial storing technologies. In this work, examples are presented from two archaeological contexts in different climatic and socio-ecological situations during the Holocene in S Asia and SW Europe. Microarchaeological techniques used in this study include micromorphology, Fourier transform infrared spectroscopy and phytolith analyses. The comparative study of two pits highlights key aspects of the decision-making process involved in technological solutions of storage: ? The choice of a location for the construction of a given storage facility is highly affected by contextual climatic, microclimatic, soil and bioturbative factors

? The time taken to consume stored foodstuffs seems to affect technological investment as much as the intrinsic conservation requirements of the stored taxa

? The use of fire to hygienise pits implies that such structures were not conceived for single use

? Pre-industrial storage systems can be seen as modular structures, which components (e.g. topographical location, sediment type, lining type, hygienisation techniques and cover) can be recombined to improve storage performance for different climatic settings and foodstuffs.

     

Caching your savings: The use of small-scale storage in European prehistory

Understanding of European prehistoric storage practices tends to focus on the long-term and large-scale storage of cereals from the Neolithic onwards. In addition, storage is often associated with the development of sedentism and social complexity. Through the use of anthropological and ethnographic data this paper demonstrates that storage by both hunter-gatherers and farmers is more complex. New storage categories, such as closed and open caches, and portable storage, are suggested as ways of understanding whether similar storage practices were used during European prehistory. We learn that although direct evidence for storage is difficult to find in the archaeological record, a combination of ethnographic data and indirect evidence demonstrates that storage, especially this use of small-scale storage, was practiced in prehistory. In the conclusion, this paper demonstrates that storage during the Mesolithic (11,300-6000 BP) would have played a vital role in the lifeways of hunter-gatherers and that for the Neolithic (6000-4500 BP) the use of small-scale storage of a variety of foods would have been equally important as the storage of grain.     

A new experimental study on percussion marks and notches and their bearing on the interpretation of hammerstone-broken faunal assemblages

Preliminary experiments on bone breakage have shown the potential utility of quantifying some of its diagnostic features (percussion marks, percussion notches) for taphonomic inferences about human and carnivore involvement in bone breakage in faunal assemblages. The present study increases the range of experiments undertaken to understand the identification of hammerstone percussion (dynamic loading) and its differences from carnivore bone breakage through tooth pressure (static loading). This study contributes to a better understanding of frequencies of percussion marks, uncovers and quantifies those percussion marks that lack key diagnostic features to be identifiable and that could be mistaken with carnivore tooth marks, quantifies notch types, shows different size ranges for notches on bones from small and large fauna than previously reported, quantifies the proportion of notches bearing percussion marks, and introduces new size data for percussion (impact) flakes and percussion marks. Furthermore, all these variables have been applied to a dual experimental set: one experiment using non-modified hammerstones and another based on the use of modified hammerstones. Results vary considerably according to hammerstone type. Some of these taphonomic variables increase the range of equifinality when identifying marks and notches created by different human and non-human agents. This calls for further caution when using isolated variables and features rather than a holistic approach to make taphonomic inferences.     

陕西地区腰坑葬俗研究

现有资料表明,陕西地区腰坑葬俗最早发现在耀县北村,时代约在商代早期偏晚阶段。同一时期,河南地区的腰坑葬俗已经开始由中原向黄河东西两岸地区伸展,传统的殷商文化借助渭河之便进入陕西,并把腰坑墓这一葬俗带给关中地区,乃至甘肃陇东地区。由此,全面了解腰坑葬俗在陕西关中、河南豫中、甘肃陇东的联系与发展,对揭开当时社会的真实历史面貌以及民族的变迁演变提供了某些线索和资料。