Phylogenetic nomenclature

Phylogenetic method in taxonomy / From Wikipedia, the free encyclopedia

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Phylogenetic nomenclature is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below. This contrasts with the traditional approach, in which taxon names are defined by a type, which can be a specimen or a taxon of lower rank, and a description in words.[1] Phylogenetic nomenclature is currently regulated by the International Code of Phylogenetic Nomenclature (PhyloCode).

Clade_names_and_phylogenetic_hypotheses.svg
The clade shown by the dashed lines in each figure is specified by the ancestor X. Under the hypothesis that the relationships are as in the left tree, the clade includes X, A, B and C. Under the hypothesis that the relationships are as in the right tree, the clade includes X, A and B.