monophyly (monophyletic group)
Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)
- (1) A group is diagnosed as monophyletic by the discover of homologies (synapomorphies). Also known as a clade. (2) A group that includes a most recent common ancestor plus all and only all of its descendants. See also component, paraphyly, polyphyly.
"Phylogenetics" by Wiley (1981), p. 7
- A natural taxon composed of two or more species comprises a monophyletic group. Another term for a monophyletic group is a clade. (Species, insofar as they are natural, are a priori monophyletic. In other words, the terms "monophyletic", "paraphyletic", or "oplyphyletic" do not really apply to natural species.)
- Kitching, I. J., Forey, P. L. Humphries, C. J. & Williams, D. M. 1998. Cladistics, 2nd ed.: the Theory and Practice of Parsimony Analysis. -xii + 228 pp. Oxford University Press, New York.
- Wiley, E. O. 1981. Phylogenetics: the Theory and Practice of Phylogenetic Systematics. -xv + 439 pp. John Wiley & Sons, Inc., New York.