We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleCope's rule and the dynamics of body mass evolution in North American fossil mammals.AuthorsAlroy, JohnPublicationScience, 1998, Vol 280, Issue 5364, p731ISSN0036-8075Publication typearticleDOI10.1126/science.280.5364.731