This file is missing information on a few character state labels. The authors provided the additional information and that is included in the matrix uploaded in the database. (E. Maxwell, personal communication) Char. 7: (0) broad premaxilla-lacrimal contact ventral to the naris excluding the maxilla from ventral narial edge; (1) reduced premaxilla-lacrimal contact ventral to the naris excluding the maxilla from ventral narial edge present and/or reducing its participation of the bony aperture of the naris; (2) no contact between the premaxilla and the lacrimal. Char. 82: (0) the base of the exoccipital is conspicuously anteroposteriorly expanded; (1) the base of the exoccipital strongly reduced (i.e. the supraoccipital facet is equal to or larger than the basioccipital facet.) Char. 85: (0) impression of the avsc to sac-ut distance equal or shorter than width of the ut+sac, i.e., “V”-shaped; (1) impression of the anterior vertical semicircular canal (avsc) to the sacculus (sac)-utriculus (ut) much longer than the width of the ut + sac, i.e., “T”-shaped. Char 42: Mandible, ventral margin: (0) straight; (1) sinusoidal, gently bowed along orbital region. Char. 45: Surangular fossa: (0) weakly developed; (1) strongly developed, forming a prominent surangular crest