TheropodaProsauropodaVulcanodonShunosaurusBarapasaurusPatagosaurusOmeisaurusMamenchisaurusJobariaHaplocanthosaurusApatosaurusBarosaurusDiplodocusDicraeosaurusAmargasaurusNigersaurusRayososaurusRebbachisaurusCamarasaurusBrachiosaurusEuhelopusMalawisaurusT_colbertiAlamosaurusOpisthocoelicaudiaNeuquensaurusSaltasaurusNemegtosaurusRapetosaurusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Wilson_et_Upchurch_2009aa