The Roman Ship 'punta Scifo d' and its Marble Cargo (Crotone,Italy)

In the first three centuries AD, large‐scale building projects, both in Rome and in the western colonies, stimulated the demand for marble from the eastern quarries. The Punta Scifo D shipwreck – discovered in 1986 in the Bay of Scifo, south of Crotone, Italy, and investigated in 2011 and 2013 by a team from the Università Ca' Foscari of Venice – is an important source for the reconstruction of this kind of trade in the Roman Empire. Studies of the cargo, dated to the third century AD, were the basis for the virtual reconstruction of a barge about 40 m long carrying a cargo of almost 340 tons. Petrographic and isotopic analyses demonstrated that it carried three different types of marble: mainly Proconnesian, some Pentelic, and one slab of Dokimean marble. The ship probably departed from the island of Marmara, and stopped at Ephesos, and perhaps also at Piraeus.     

Mesowear as a means of determining diets in African antelopes

Analysis of dental mesowear is a useful tool to examine dietary strategies in ungulates, and provides a palaeoenvironmental proxy at archaeological and palaeontological sites. We examine the distribution of traditional qualitative mesowear variables amongst 33 species of extant African antelope. We also examine the relationship of our dataset with the original dataset of Fortelius and Solounias (2000). We find that confining mesowear analyses to antelope species alone reduces their discriminating power relative to that found in analyses using a broader range of taxa. Variability in mesowear scores along the toothrow suggest that different teeth do not wear equivalently over an individual’s life-time, so it is important to confine comparisons to individual tooth positions for palaeodietary classifications. Mesowear scores from the third upper molar were found to have the greatest discriminating power. Frugivores displayed unique mesowear signatures, suggesting that this trophic guild should be taken into consideration separately in future mesowear analyses. These results have implications which can improve the application and the discriminatory power of mesowear analyses for the determination of the palaeodiets of extinct taxa, and, by extension, their palaeoenvironments.     

A 5th‐Century‐AD Sewn‐Plank River Barge at St Maria in Padovetere (Comacchio‐FE), Italy: an interim report

This article reports on the remains of a 5th‐century‐AD river barge excavated in 2014 and 2015. Most of the flat bottom and one side are preserved. The barge is at least 20 m in length and 2.9 m across the floor, and is constructed using sewn planks, iron nails and mortise‐and‐tenon fasteners. Both flush‐laid and lapstrake planks are recorded. Archaeological, historical, iconographic and ethnographic evidence is used to propose explanations for features, such as the use of lapstrakes, a possible steering system and platform, and the likely position of a pump, while setting the barge in the context of the North Adriatic shipbuilding tradition.     

Spatial equilibrium in deviations: An application to skill‐premium and skill‐mix heterogeneity

In this paper, we propose a novel—and general‐purpose—modeling approach. We give a linear representation of the spatial general equilibrium, expressed in terms of local percentage deviations from the benchmark case of symmetry, where all the areas in the economy are taken to be initially identical. To illustrate the flexibility of our approach, we revisit the literature on the spatial heterogeneity of local skill premia and local skill mix. We show that our approach is able to encompass a variety of alternative explanations in a simple “unifying framework.” Finally, we exploit a graphical version of the model to show how to implement empirical tests.     

Oxygen isotopic composition of limpet shells from the Beagle Channel: implications for seasonal studies in shell middens of Tierra del Fuego

Shell middens distributed along the coastal areas of the Beagle Channel (Tierra del Fuego) testify the primary role of marine resources in the successful social dynamic of hunter–gatherer–fisher societies (HGF) in extreme high latitude environmental conditions. Intertidal and subtidal limpet species are frequently identified taxa of these archaeological deposits. We investigated whether shell δ¹⁸O of the limpet species Nacella deaurata is a valuable record of local sea surface temperature (SST) and ambient water δ¹⁸O (δ¹⁸Ow) fluctuations, and in turn can be used to estimate the season of its exploitation by Holocene HGF. Sequential shell δ¹⁸O of modern species track seasonal changes of SST and δ¹⁸Ow. The comparison of shell δ¹⁸O profiles of N. deaurata and Nacella magellanica (a coexisting species) suggests the occurrence of distinct growth rate and physiological adaptations between species. Shell δ¹⁸O of zooarchaeological specimens of N. deaurata from Lanashuaia II suggests that animals were exploited predominantly in winter and that experienced similar environmental conditions of present day at ∼1320 years BP. Results also indicate that N. deaurata is a valuable candidate for studying past seasonal changes in SST and δ¹⁸Ow in this southernmost part of South America.     

Palynological interpretation of the Early Neolithic coastal open-air site at Sa Punta (central-western Sardinia,Italy)

The major goal of the present study has been to assess the ecological context of the Early Neolithic settlement under excavation in the coastal site of Sa Punta-Marceddì (Terralba, Sardinia, Italy) where a trench of Neolithic age has been brought to light. Based on the origins of the site's organic fossiliferous content, the purpose of this work is to achieve an understanding of: 1) the reasons why this location was chosen by EN man and 2) its functions. This research has enabled us to suggest a human paleoecological scenario over the course of the last three centuries of the 6th millennium BC in the inland area of the Oristano Gulf. On the basis of pollen spectra and the phytolith morphologies recognised, it is suggested that herbaceous vegetation covered the alluvial plain. Arable agriculture does not seem to have been practiced on the site, but the record of coprophilous fungi and endoparasites, along with clues that there were burning practices, suggest livestock farming activity. To date, a univocal interpretation of the function of this trench is still lacking. However, it is the oldest and the only evidence in Sardinia of a remarkable transformation of an open-air space due to settlement.     

Mesolithic shellfish exploitation in SW Italy: seasonal evidence from the oxygen isotopic composition of Osilinus turbinatus shells

Oxygen isotope analyses were carried out on the topshell Osilinus turbinatus from archaeological sites with the aim to investigate the temporal exploitation patterns by Mesolithic groups inhabiting coastal caves in SW Italy. In order to assess the present day O. turbinatus intra-annual δ¹⁸O variability, living specimens were collected monthly at Marina di Camerota (SW Italian peninsula). Their shell-edges were analysed and the seasonal results were compared with archaeozoological material. Our findings show that Mesolithic O. turbinatus exploitation was carried out almost exclusively during the colder and intermediary seasons (e.g. autumn, winter, spring), with very sporadic harvesting during the warmer seasons. Results suggest a possible regional exploitation pattern of O. turbinatus by Mesolithic groups inhabiting this region.