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A critical assessment of claims that human footprints in the Lake Otero basin, New Mexico date to the Last Glacial Maximum

Published online by Cambridge University Press:  02 September 2022

Charles G. Oviatt Open the ORCID record for Charles G. Oviatt [Opens in a new window] ,
David B. Madsen ,
David Rhode  and
Loren G. Davis
Charles G. Oviatt*
Affiliation:
Department of Geology, Kansas State University, Manhattan, KS 66506
David B. Madsen
Affiliation:
Department of Anthropology, University of Nevada-Reno, Reno, NV, 89557
David Rhode
Affiliation:
Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV 89512
Loren G. Davis
Affiliation:
Department of Anthropology, Oregon State University, Corvallis, OR 97331
*
*Corresponding author email address: joviatt@ksu.edu
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Abstract

The ancient human footprints in valley-bottom sediments in Tularosa Valley, New Mexico, are fascinating and potentially important because they suggest interactions between Pleistocene megafauna as well as great antiquity. The dating of those footprints is crucial in interpretations of when humans first came to North America from Asia, but the ages have larger uncertainties than has been reported. Some of that uncertainty is related to the possibility of a radiocarbon reservoir in the water in which the dated propagules of Ruppia cirrhosa grew. As a test of that possibility, Ruppia specimens collected in 1947 from nearby Malpais Spring returned a radiocarbon age of ca. 7400 cal yr BP. We think it would be appropriate to devise and implement independent means for dating the footprints, thus lowering the uncertainty in the proposed age of the footprints and leading to a better understanding of when humans first arrived in the Americas.

Keywords

Radiocarbon reservoirRuppiaEarly peopling of the Americas
Type
Contribution to the QR Forum
Information
Quaternary Research , Volume 111 , January 2023 , pp. 138 - 147
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Copyright
Copyright © University of Washington. Published by Cambridge University Press, 2022

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