†[Eusauropoda] Upchurch 1995
†Neosauropoda Bonaparte 1986 [Wilson & Sereno 1998]
†Macronaria Wilson & Sereno 1998
†Titanosauriformes Salgado, Coria & Calvo 1997
†Somphospondyli Wilson & Sereno 1998
†Euhelopodidae Romer 1956 [D'Emic 2012]
see Family Euhelopodidae Romer, 1956
Genus †Tangvayosaurus Allain, Taquet, Battail, Dejax, Richir, Veran, Limon-Duparcmeur, Vacant, Mateus, Sayarath, Khenthavong & Phouyavong, 1999
1 †Tangvayosaurus hoffeti Allain, Taquet, Battail, Dejax, Richir, Véran, Limon-Duparcmeur, Vacant, Mateus, Sayarath, Khenthavong & Phouyavong, 1999