Dendrerpeton_acadianumBalanerpeton_woodiDissorophidaeZatrachydidaeEryopidaeSclerocephalus_haeuseriPeltobatrachus_pustulatusAustralerpeton_cosgriffiUranocentrodon_senekalensisLydekkerina_huxleyiLaidleria_gracilisSiderops_kehliGerrothorax_pustuloglomeratusSclerothorax_hypselonotusParacyclotosaurus_davidiMastodonsaurus_giganteusBenthosuchusTrematolestes_hagdorniMetoposauridaeOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Schoch_etal_2007a