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  1. Davide Pisani, Michael J. Benton & Mark Wilkinson (2007). Congruence of Morphological and Molecular Phylogenies. Acta Biotheoretica 55 (3).
    When phylogenetic trees constructed from morphological and molecular evidence disagree (i.e. are incongruent) it has been suggested that the differences are spurious or that the molecular results should be preferred a priori. Comparing trees can increase confidence (congruence), or demonstrate that at least one tree is incorrect (incongruence). Statistical analyses of 181 molecular and 49 morphological trees shows that incongruence is greater between than within the morphological and molecular partitions, and this difference is significant for the molecular partition. Because the (...)
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  2. Mark Wilkinson (1998). Higher-Order Homoplasy Tests. Acta Biotheoretica 46 (2).
    The Le Quesne test of character compatibility uses pairwise comparisons of characters to detect homoplasy in phylogenetic character data. If a pair of characters fails this test we can conclude that a minimum of a single extra step is required by the pair of characters. The rationale of the Le Quesne test is extended to comparisons of triplets of characters. The triplet homoplasy test can reveal that that there is a minimum of four extra steps across a triplet of characters (...)
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  3. Mark Wilkinson (1997). Burning Straw Men Sheds Little Light: A Reply to Whiting and Kelly. Acta Biotheoretica 45 (1).
    Wilkinson (1991a) developed arguments that the distributions of primitive character states may delimit clades, and proposed a method that exploited the evidence of primitive character state distributions for inferring clades. Whiting and Kelly (1995) presented a critique of these ideas, arguing that they are logically incoherent and that the method does not succeed in its aims. This critique severely misrepresents the original arguments and the method, and amounts to no more than an attack on a straw man.
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  4. Mark Wilkinson (1991). The Use of Primitive Character State Distributions in the Assessment of Holophyly. Acta Biotheoretica 39 (1).
    Cladistic analyses are based on the distinction between primitive and derived character states (hypotheses of the polarity of evolutionary transformations) and a complete reliance on only derived character state distributions as bona fide evidence of holophyletic assemblages of taxa. The cladistic premise that only derived character state distributions provide evidence of holophyly is reconsidered and shown to be both unjustified and inconsistent with the desire or methodological prescription of using all the available evidence. Cladistic techniques are here viewed primarily as (...)
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  5. Mark Wilkinson (1990). A Commentary on Ridley's Cladistic Solution to the Species Problem. Biology and Philosophy 5 (4):433-446.
    The cladistic species concept proposed by Ridley (1989) rests on an undefined notion of speciation and its meaning is thus indeterminate. If the cladistic concept is made determinate through the definition of speciation, then it reduces to a form of whatever species concept is implicit in the definition of speciation and fails to be a truly alternative species concept. The cladistic formalism advocated by Ridley is designed to ensure that species are monophyletic, that they are objectively real entities, and that (...)
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  6. Mark Wilkinson (1988). Evolutionary and Classical Concepts of Homology: A Reply to Aboitiz. Acta Biotheoretica 37 (3-4).