Phylogenetic relationships of leptellinid brachiopods

The relationships among the diverse genera comprising the family Leptellinidae (Brachiopoda) are reviewed in the light of the revised edition of the Treatise on Invertebrate Palaeontology. Taxonomic work reassessed all the genera identified as Leptellinidae in the most current classification. Four genera were discarded, namely Bekkerella, Benignites, Leptastichidia and Nikitinamena. Cladistic analysis reveals the paraphyly of these genera; their abandonment leading to more morphologically coherent subdivisions of the family. Two subfamilies, Leptellininae and Palaeostrophomeninae, are emended and taxonomically restructured. The palaeogeographical history of the Leptellinidae is complicated. The Leptellinidae are first recorded in Baltica in the late Floian (Early Ordovician) and rapidly dispersed to circum-Iapetus palaeocontinents by the Dapingian, thence to most terranes composing Gondwana by the Darriwilian (Middle Ordovician).     

Sewn Boats of Southeast Asia: the stitched‐plank and lashed‐lug tradition

This article updates research into the sewn‐boat traditions of Southeast Asia with recent finds that provide evidence of the transition from stitched planks with lashed‐lug frames to planks fastened with dowels and locked dowels alongside lashed‐lug frames. The differences between Southeast Asian, East Asian, and Indo‐Arabic boatbuilding are discussed and the meaning of anomalies, such as the Maldivian dhonis, examined. Considering the known history of trade and exchange throughout the South China Sea and the Indian Ocean, the lack of hybridization between boatbuilding traditions is noted.     

The ‘invisible’ hearths: a contribution to the discernment of Mesolithic non-structured surface hearths

In the cover sand area of the NW European plain very little is known about fireplaces within Mesolithic settlement areas. Yet the frequent occurrence of burnt ecofacts (hazelnut shells and bone) and artefacts (flint and quartzite) clearly indicates the presence of (surface) hearths on nearly every campsite. Most of these hearths are non-structured and are thus barely visible in the soil. Furthermore in most spatial studies minimal effort has been made to locate these ‘invisible’ hearths as accurately as possible. This paper discusses the potential and modalities of detailed spatial analysis of burnt artefacts and ecofacts, using recently obtained archaeological and experimental evidences. It is concluded that such an analysis can offer interesting insights into the dynamics of Mesolithic hearths.     

State Making and the Politics of the Frontier in Central Benin

Kopytoff's model of the African frontier has opened room for renewed approaches to settlement history, politics, ethnicity and cultural reproduction in pre‐colonial Africa. This interpretative framework applies well to central Benin (Ouessè). Over the long term, mobility has been a structural feature of the regional social history, from pre‐colonial times onwards. Movements of people, resources, norms and values have been crucial in the production and reproduction of the social and political order. The colonial intrusion and its post‐colonial avatars gave way to renewed relations between mobility and locality, in particular in the form of a complex articulation between control over labour force, access to land and natural resources, and out‐ and in‐migrations. This article argues that the political frontier metaphor provides a useful heuristic device to capture the logic of state making, as the changing outcome of organizing practices taking place inside and outside state and non‐state organizations and arenas. Governmentality in post‐colonial central Benin thus results from the complex interplay of mobility, control over resources and state‐led forms of ‘villagization’.     

RURAL–URBAN MIGRATION AND UNEMPLOYMENT: THEORY AND POLICY IMPLICATIONS*

ABSTRACT We develop a regional model where, in the city, unemployment prevails because of too high (efficiency) wages, while, in the rural area, workers are paid at their marginal productivity. We characterize the steady‐state equilibrium and show that it is unique. We then consider two policies: decreasing urban unemployment benefits and subsidizing urban employment. We find that decreasing the unemployment benefit in the city creates urban jobs and reduces rural–urban migration since new migrants have to spend some time unemployed before they can find a job in the city. On the other hand, raising employment subsidies increases urban employment but may also increase urban unemployment because it triggers more rural–urban migration. In this respect, the employment subsidy policy can backfire by raising rather than reducing urban unemployment.