Resumen de Processes of change in Magdalenian societies in the Pyrenean isthmus (20�16 ky cal BP)
The author uses a detailed analysis of lithic assemblages to propose a major social and economic change in the Pyrenees around 18 ky cal BC, roughly the watershed between the Lower and Middle Magdalenian periods. Nomadic groups begin to settle down, occupy loose territories, move raw materials over vast distances and specialise in manufacture for hunting and domestic use. These trends coincide with a cold period and an increase in grassland, the Heinrich Stadial.
