VaranopidaeOphiacodontidaeEdaphosauridaeHaptodus_garnettensisCryptovenatorPantelosaurusCutleriaIanthodonSphenacodon_ferociorCtenospondylusDimetrodon_milleriDimetrodon_limbatusDimetrodon_grandisSecodontosaurusBiarmosuchusCtenorhachisDinocephaliaTetraceratopsRaranimusHipposaurusBathygnathus_borealisOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Brocklehurst_et_Brink_2017a