PetrolacosaurusThadeosaurusClaudiosaurusHovasaurusHupehsuchusUtatsusaurusGrippiaParvinatatorChaohusaurusCymbospondylus_petrinusCymbospondylus_buchseriMixosaurus_cornalianusMixosaurus_atavusMixosaurus_nordenskioeldiiBesanosaurusShastasaurusShonisaurusCalifornosaurusToretocnemusHudsonelpidiaMacgowananiaSuevoleviathanTemnodontosaurusLeptonectesExcalibosaurusEurhinosaurusIchthyosaurusStenopterygiusBrachypterygiusOpthalmosaurusCaypullisaurusPlatypterygiusHauffiopteryxOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Caine_et_Benton_2011aa