In a brief commentary, Smith (2000) broadly dismisses several newly developed phylogenetic methods that make use of temporal data. In this comment, I wish to concur with other critics of Smith (Fisher et al., 2002; Wagner, 2002), and in particular expand on an argument of Fisher et al. regarding stratocladistics and the divisibility of paleontological time scales. Smith's strongest and most detailed argument is that “With enough subdivisions of time … stratigraphic debt can be made sufficiently large to overturn any phylogeny based on morphology …” As pointed out by Fisher et al. (2002), Clyde...

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