Format

Send to

Choose Destination
Science. 2019 Aug 30;365(6456):891-897. doi: 10.1126/science.aax9830.

Late Upper Paleolithic occupation at Cooper's Ferry, Idaho, USA, ~16,000 years ago.

Author information

1
Department of Anthropology, Oregon State University, 238 Waldo Hall, Corvallis, OR 97331, USA. loren.davis@oregonstate.edu.
2
Texas Archeological Research Laboratory, University of Texas, Austin, TX 78758, USA.
3
Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, School of Archaeology, 1 South Parks Road, Oxford OX1 3TG, UK.
4
Bureau of Land Management, Cottonwood Field Office, 2 Butte Drive, Cottonwood, ID 83522, USA.
5
Department of Anthropology, Oregon State University, 238 Waldo Hall, Corvallis, OR 97331, USA.
6
University of Victoria, Department of Anthropology, P.O. Box 1700 STN CSC, Victoria, BC V8W 2Y2, Canada.
7
Northwest Archaeometrics, P.O. Box 2427, Corvallis, OR 97339, USA.
8
Division of Earth and Ecosystem Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA.
9
Tokyo Metropolitan University, Faculty of Humanities and Social Sciences, 1-1 Minami-Osawa, Hachioji-shi, Tokyo, Japan 192-0397.
10
School of Social Sciences, Humanities and Arts, University of California, Merced, Merced, CA, USA.
11
Oregon State University, Department of Fisheries and Wildlife, 104 Nash Hall, Corvallis, OR 97331, USA.
12
Oregon Parks and Recreation Department, Stewardship Section, 725 Summer Street, NE, Suite C, Salem, OR 97301, USA.

Abstract

Radiocarbon dating of the earliest occupational phases at the Cooper's Ferry site in western Idaho indicates that people repeatedly occupied the Columbia River basin, starting between 16,560 and 15,280 calibrated years before the present (cal yr B.P.). Artifacts from these early occupations indicate the use of unfluted stemmed projectile point technologies before the appearance of the Clovis Paleoindian tradition and support early cultural connections with northeastern Asian Upper Paleolithic archaeological traditions. The Cooper's Ferry site was initially occupied during a time that predates the opening of an ice-free corridor (≤14,800 cal yr B.P.), which supports the hypothesis that initial human migration into the Americas occurred via a Pacific coastal route.

PMID:
31467216
DOI:
10.1126/science.aax9830

Supplemental Content

Full text links

Icon for HighWire
Loading ...
Support Center