Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Rates of Evolution: Effects of Time and Temporal Scaling

Philip D. Gingerich
Science
New Series, Vol. 222, No. 4620 (Oct. 14, 1983), pp. 159-161
Stable URL: http://www.jstor.org/stable/1691072
Page Count: 3
  • More info
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Rates of Evolution: Effects of Time and Temporal Scaling
Preview not available

Abstract

Rates of morphological evolution documented in laboratory selection experiments, historical colonization events, and the fossil record are inversely related to the interval of time over which they are measured. This inverse relationship is an artifact of comparing a narrow range of morphological variation over a wide range of time intervals, and it is also a product of time averaging. Rates measured over different intervals of time must be scaled against interval length before they can be compared.

Page Thumbnails

  • Thumbnail: Page 
159
    159
  • Thumbnail: Page 
160
    160
  • Thumbnail: Page 
161
    161