The Tree of Life: A Multi‐Authored, Distributed Internet Project Containing Information about Phylogeny and Biodiversity0039David R. Maddison, Wayne P. Maddison. The Tree of Life: A Multi‐Authored, Distributed Internet Project Containing Information about Phylogeny and Biodiversity. College of Agriculture, University of Arizona, 1996 to date. http://phylogeny.arizona.edu/tree/phylogeny.html Price: No charge