This character measures the absolute thickness of the palate posterior to the incisive fossa. Character states and taxa allocations follow Strait et al. (1997) and Strait (2001). A thin palate represents the primitive condition that is under 7 mm (= 0); a thick palate is observed only in Paranthropus species that is over 7 mm (= 1) (see also McCollum, 1997). Even though no data are available for Kenyanthropus, Leakey et al. (2001) describe the palate roof as being thin, so it is allocated as such.
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