Anderson, Sydney, 1927-2005-10-062005-10-061977http://hdl.handle.net/2246/202615 p. : ill. ; 26 cm.Includes bibliographical references (p. 14-15)."Existing theory on the geographic ranges occupied by species focuses on individual species, the density of species at different places, and not on the question as to what the size-distribution of the ranges of species in a larger fauna is or how this distribution may be explained. The ranges of North American terrestrial mammals are examined and a regular decline in the number of species having ranges in successively larger size-classes of ranges is found. The frequency distribution does not fit the lognormal or any of several other familiar distributions and further work is needed to develop a model that does fit. Other taxa and faunas should be examined also"--P. [1].5310972 bytesapplication/pdfen-USMammals -- North America -- Geographical distribution.text