'hollow-backed tail [vertebrae]'
Late Cretaceous, 72-68 million years ago
Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Eusauropoda, Neosauropoda, Macronaria, Camarasauromorpha, Titanosauriformes, Titanosauria, Lithostrotia, Saltasauridae
Borsuk-Bialynicka  (1977)