SeymouriidaeSynapsidaParareptiliaCaptorhinidaeAraeoscelidiaRhynchocephaliaSquamataProlacertaTanystropheusTrilophosaurusRhynchosauriaArchosauriformesChoristoderaEosauropterygiaPlacodontiaClaudiosaurusThalattosauriforTestudinesCoelurosauravusYounginiformesApsisaurusIchthyopterygiaKuehneosauridaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Muller_2003a