OmeisaurusJobariaMACRONARIASuuwasseaApatosaurusDiplodocusAmargasaurusBrachytrachelopanDicraeosaurusHistriasaurusRebbachisaurusZapalasaurusLimaysaurusCathartesauraNigersaurusSpain_RebbachOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Sereno_etal_2007a