Published online by Cambridge University Press: 25 January 2017
In several sites on our high western plains, at altitudes of more than 4000 feet above sea level, artifacts have been found in apparently unquestionable association with Pleistocene mammal remains. Since the fossil remains connected with these important finds belong to a very definite geological age, this age becomes a geological problem which can only be solved, to any degree of scientific satisfaction, by following the rules governing conservative, orthodox geological research.
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1937.