LimnoscelidaeDiadectidaeSynapsidaMesosauridaeEunotosaurusMillerettidaeEudibamusBelebeyAcleistorhinusLanthanosuchidaeMacroleterPareiasauriaProcolophonidaeCaptorhinidaePalaeothyrisAraeoscelidiaYounginiformesOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Reisz_etal_2007a