(Omeisaurus,(Jobaria,MACRONARIA,((Suuwassea,(Apatosaurus,Diplodocus),(Amargasaurus,(Brachytrachelopan,Dicraeosaurus))),(Histriasaurus,(Rebbachisaurus,((Zapalasaurus,(Limaysaurus,Cathartesaura)),(Nigersaurus,Spain_Rebbach)))))));