Abstract
IN a review on the Pliocene–Pleistocene boundary, Flint1 clearly distinguishes between the two types of definition at present in use. One definition is stratigraphic and based on evolutionary changes in organisms, while the other is related to climatic changes and based on recognition of marked cooling in the late Caenozoic. It is clearly important to establish whether these two definitions are equivalent, and here we summarize the available evidence, using quantitative data obtained chiefly by the potassium–argon dating method. Many of these results have been published since the comprehensive review by Shotton2.
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MCDOUGALL, I., STIPP, J. Isostopic Dating Evidence for the Age of Climatic Deterioration and the Pliocene–Pleistocene Boundary. Nature 219, 51–53 (1968). https://doi.org/10.1038/219051a0
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DOI: https://doi.org/10.1038/219051a0
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