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 23 August 1968:
Vol. 161. no. 3843, pp. 800 - 802
DOI: 10.1126/science.161.3843.800
Prev | Table of Contents | Next

Articles

Mollusk Shell: Daily Growth Lines

George R. Clark II 1

1 Division of Geological Sciences, California Institute of Technology, Pasadena 91109

Ridges forming the concentric sculpture on the shells of laboratory-grown specimens of Pecten diegensis Dall show daily periodicity. Missing growth lines account for all scatter in the data, so that the maximum, not the average, line count is most representative. The variation in spacing between growth lines can be correlated among specimens.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Growth Lines in a Bivalve Mollusk: Subdaily Patterns and Dissolution of the Shell.
J. Gordon, J. GORDON, and M. R. CARRIKER (1978)
Science 202, 519-521
   Abstract »    PDF »
Secular Accelerations of the Earth and Moon.
R. R. Newton and R. R. Newton (1969)
Science 166, 825-831
   PDF »


To Advertise     Find Products

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