New evidence for the antiquity of man in North America deduced from aspartic acid racemization - PubMed (original) (raw)

New evidence for the antiquity of man in North America deduced from aspartic acid racemization

J L Bada et al. Science. 1974.

Abstract

Ages of several Californzia Paleo-Indlian skeletons have been deduced from the extent of aspartic acid racemization. These dates suggest that man was present in North America at least 50,000 years before the present.

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