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or "branch-based"

Posted by keesey on 27 Sep 2009 at 17:18 GMT


This type of definition has been renamed "branch-based" in more recent drafts of the PhyloCode, in order to avoid confusion with the term "stem group" (referring to a paraphyletic group consisting of a total clade minus its corresponding crown clade).

Competing interests declared: I am currently a member of the Committee on Phylogenetic Nomenclature, the governing body for the PhyloCode.