This paper reviews the relative feasibility of interior and coastal routes for early man entering southern North America from Beringia during the late Pleistocene. Paleoenvironmental and archaeological data suggest that a chain of sea-level refugia around the North Pacific coast could have provided a real alternative to the interior “ice-free” corridor and that maritime cultural adaptations may have been among the first to arrive south of Canada.
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K. R. Fladmark (1979) studied this question.
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