The Aterian and its place in the North African Middle Stone Age

摘要

The Aterian is a frequently cited manifestation of the Middle Stone Age (MSA) of North Africa, yet its character and meaning have remained largely opaque, as attention has focused almost exclusively on the typology of 'tanged', or 'pedunculated', lithics. Observations of technological similarities between the Aterian and other regional technocomplexes suggest that the Aterian should be considered within the wider context of the North African MSA and not as an isolated phenomenon. This paper critically reviews the meaning and history of research of the Aterian. This highlights a number of serious issues with definitions and interpretations of this technocomplex, ranging from a lack of definitional consensus to problems with the common view of the Aterian as a 'desert adaptation'. Following this review, the paper presents the results of a quantitative study of six North African MSA assemblages (Aterian, Nubian Complex and 'MSA'). Correspondence and Principal Components Analyses are applied, which suggest that the patterns of similarity and difference demonstrated do not simplistically correlate with traditional divisions between named industries. These similarity patterns are instead structured geographically and it is suggested that they reflect a population differentiation that cannot be explained by isolation and distance alone. Particular results include the apparent uniqueness of Haua Fteah compared to all the other assemblages and the observation that the Aterian in northeast Africa is more similar to the Nubian in that region than to the Aterian in the Maghreb. The study demonstrates the existence of population structure in the North African MSA, which has important implications for the evolutionary dynamics of modern human dispersals.