PetrolacosaurusClaudiosaurusThadeosaurusHovasaurusWumengosaurusNanchangosaurusEohupehsuchusHupehsuchusParahupehsuchusEretmorhipisSclerocormusCartorhynchusChaohusaurus_geishanensisChaohusaurus_chaoxianensisChaohusaurus_zhangjiawanensisUtatsusaurusGrippiaGulosaurusParvinatatorMixosaurus_panxianensisMixosaurus_cornalianusMixosaurus_kuhnschnyderiPhalarodon_atavusPhalarodon_fraasiPhalarodon_callawayiCymbospondylus_piscosusCymbospondylus_buchseriCymbospondylus_nichollsiXinminosaurusThalattoarchonBesanosaurusGuizhouichthyosaurusCallawayia_wolonggangensisGuanlingsaurusShastasaurusShonisaurus_popularisShonisaurus_sikanniensisCalifornosaurusToretocnemusQianichthyosaurus_zhouiQianichthyosaurus_xingyiensisCallawayia_neoscapularisHudsonelpidiaMacgowaniaSuevoleviathanTemnodontosaurusLeptonectes_tenuirostrisLeptonectes_mooreiLeptonectes_soleiExcalibosaurusEurhinosaurusIchthyosaurusStenopterygiusAegirosaurusAcamptonectesMaiaspondylusArthropterygiusAthabascasaurusSveltonectesBrachypterygiusCaypullisaurusMalawaniaMollesaurusLeniniaChacaicosaurusHauffiopteryxPlatypterygius_australisPlatypterygius_americanusCryopterygiusOphthalmosaurus_icenicusOphthalmosaurus_natansPalvenniaSisteroniaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix. Taxon recon relies in part on Motani (1999).Motani_etal_2017a