That's why Hennig proposed a simple numbering scheme rather than named levels. To compare groupings allowed by cladistics with those allowed by phenetics and evolutionary classification, see Table 14.1, p. 381. But it is not easy to apply cladistic principles in practice. Some attempts yield results which are no less subjective than those of phenetics. Evolutionary classification is a synthesis of the phenetic and phylogenetic principles.
Evolutionary classification attempts to represent major features of evolutionary history.
To accomplish this, evolutionary classification recognizes not only many monophyletic groups but also many paraphyletic groups. The paraphyletic groups are distinguished by exclusion of one or more derived groups which have undergone significant divergences from the shared common ancestor. Thus a group can be defined either by shared-derived homologies OR by ancestral homologies which have been lost or modified by an excluded subgroup that shares the same common ancestor. Evolutionary classification does not have a consistent relationship either to phylogeny or to phenetic similarity. In cladistics, knowing how an organism is classified is equivalent to knowing how it is ancestrally related to all other organisms.