Models for Pleistocene Extinction

Arguments for Paleoindian overkill of Late Pleistocene megafauna have traditionally emphasized North America with little more than token reference to other areas. Other scholars reject human causation of Pleistocene extinctions, preferring to see in climatic and environmental changes a sufficient explanation for the losses of these forms. This paper discusses the idea of overkill with reference to a computer simulation by Mosimann and Martin (1975), and offers reasons for preferring an alternative formulation. It is also suggested that the case of South America should be reviewed separately, and that an environmental explanation of Pleistocene extinction may be more suitable there.