Full reference: J. F. Bonaparte. 1999. Evolución de las vértebras presacras en Sauropodomorpha [Evolution of the presacral vertebrae in Sauropodomorpha]. Ameghiniana 36(2):115-187
Parent taxon: Sauropoda according to J. F. Bonaparte 1999
Sister taxa: Agustiniidae, Amygdalodon, Antetonitrus, Archaeodontosaurus, Atlantosauridae, Blikanasaurus, Bothriospondylidae, Bothrosauropodidae, Bothrosauropodoidea, Brontopodidae, Brontopodus, Brontosauridae, Camarasauroidea, Camelotia, Cardiodontidae, Chinshakiangosaurus, Chubutisauridae, Chuxiongosaurus, Deuterosauropodopus, Dystrophaeus, Eusauropoda, Faveoloolithidae, Gongxianosaurus, Gravisauria, Homalosauropodidae, Homalosauropodoidea, Isanosaurus, Jingshanosaurus, Kotasaurus, Lamplughsaura, Mamenchisauroidea, Melanorosaurus, Microsaurops, Ohmdenosaurus, Oplosaurus, Ornithopsidae, Parabrontopodidae, Parabrontopodus, Pleurocoelidae, Polyonyx, Ravatichnus, Rotundichnus, Spinophorosaurus, Tapinosaurus, Tendaguriidae, Vulcanodon, Algoasaurus bauri, Morinosaurus priscus
Subtaxa: none
Type: Haplocanthosaurus
Ecology: ground dwelling herbivore