 Finally, we can consider how to include phylogenetic information in our measure of biodiversity. One method comes from Daniel Faith (1992, 1994, 2002). In cladistics, we use character traits to divide organisms into groups. We begin with the traits shared by all of the organisms and then articulate smaller groups by traits unique to them where each then is a clade. A cladogram then displays the distinct character traits of each group. Cladograms differ from phylogenetic trees insofar as the latter includes ancestor-descendant relations apart from merely relations of nested similarity. For any phylogenetic tree, there are many cladograms consistent with it. Faith writes,