A clade is a taxonomic group (such as one of organisms) comprising a single common ancestor and all the descendants of that ancestor. Any such group is considered to be a monophyletic group, and can be represented by both a phylogenetic analysis, as in a tree diagram, and by a cladogram (see cladistics), or simply as a taxonomic reference. If a clade proves robust in alternate cladistic analyses using different sets of data, it may be adopted into taxonomy and become a taxon. Not all taxa, howe… (More on Clades)