Norman MacLeod and Peter L. Forey, eds., 2002, Taylor and Francis Inc., New York, 308 p. (Hardcover, US$ 125.00) ISBN: 0-415-24074-3.

Anyone who has ever coded a character matrix for phylogenetic analysis has asked themselves questions such as: “Is this ambulacrum long or short?” or “Is this sulcus wide and shallow, or narrow and deep?” Issues with coding shape characters are further compounded when coding a taxon using another researcher’s character descriptions because their concept of “narrow and deep” may not fully overlap with one’s own. How we code continuous variables for use in phylogenetic analysis is one of the...

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