TheropodaProsauropodaVulcanodonShunosaurusBarapasaurusPatagosaurusOmeisaurusMamenchisaurusJobariaHaplocanthosaurusApatosaurusBarosaurusDiplodocusDicraeosaurusAmargasaurusNigersaurusRayososaurusRebbachisaurusCamarasaurusBrachiosaurusEuhelopusMalawisaurusT_colbertiAlamosaurusOpisthocoelicaudiaNeuquensaurusSaltasaurusNemegtosaurusRapetosaurusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Wilson_2002a