Supplemental Appendix A: A. Modifications to characters and codings from the matrix of Nesbitt et al. (2015).; Appendices for Main Text PDF (A–C) from A bird-like skull in a Triassic diapsid reptile increases heterogeneity of the morphological and phylogenetic radiation of Diapsida C. PritchardAdam J. NesbittSterling 2017 PLEASE NOTE: Figures 5–13 are intended for incorporation into the appendices in the main text pdf.