Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 17 May 1974:
Vol. 184. no. 4138, pp. 791 - 793
DOI: 10.1126/science.184.4138.791
Prev | Table of Contents | Next

Articles

New Evidence for the Antiquity of Man in North America Deduced from Aspartic Acid Racemization

Jeffrey L. Bada 1, Roy A. Schroeder 2, and George F. Carter 3

1 Scripps Institution of Oceanography and Institute of Marine Resources, University of California, San Diego, La Jolla 92037
2 Scripps Institution of Oceanography
3 Department of Geography, Texas A&M University, College Station 77843

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Racemization Dating.
J. L. Bada and J. L. Bada (1990)
Science 248, 539-540
   PDF »
Uranium Series Ages of the Del Mar Man and Sunnyvale Skeletons.
J. L. Bada, J. L. BADA, and R. FINKEL (1982)
Science 217, 755
   PDF »
Books Received.
(1981)
Science 213, 1002
   PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)