ProsauropodaTheropodaVulcanodonShunosaurusBarapasaurusPatagosaurusOmeisaurusMamenchisaurusJobariaHaplocanthosaurusApatosaurusBarosaurusDiplodocusDicraeosaurusAmargasaurusNigersaurusRayososaurusRebbachisaurusCamarasaurusBrachiosaurusEuhelopusErketuMalawisaurusT_colbertiAlamosaurusOpisthocoelicaudiaNeuquensaurusSaltasaurusNemegtosaurusRapetosaurusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Ksepka_et_Norell_2006a