Fig. 42. Character 26 (morphology of the maxillary recess) optimized on the Meredith et al. (2009) topology. For character state 26.0, the caudal portion of recess is medially enclosed by the posterior transverse lamina. For character state 26.1, the uncinate process of the caudal nasoturbinal also contributes to the medial wall of the recess. States for this character are illustrated in figure 27. Abbreviation: NA, not applicable.