Phylogenetic Nomenclature

Phylogenetic nomenclature neckties names to clades, groups composing of an ancestor and also all its descendants. These kind of groups can equivalently become called monophyletic. You can find slightly different ways of specifying the ancestor, that are discussed below. Once the ancestor is given, the meaning in the name is repaired: the ancestor and all organisms that are its descendants are included in the named taxon.