PaleoDB taxon number: 95571
Synonyms: Allophagi Jaekel 1914 (no. 310481), Cetiosauria Seeley 1874 (no. 56546), Opisthocoelia Owen 1859 (no. 56545)
Full reference: O. C. Marsh. 1878. Principal characters of American Jurassic dinosaurs. Part I. American Journal of Science and Arts 16:411-416
Parent taxon: Sauropodiformes according to B. W. McPhee et al. 2015
Sister taxa: Aardonyx, Blikanasaurus, Camelotia, Gongxianosaurus, Jingshanosaurus, Ledumahadi, Leonerasaurus, Melanorosaurus, Meroktenos, Mussaurus, Sefapanosaurus, Seitaad, Xingxiulong, Yizhousaurus, Yunnanosaurus
Subtaxa: Acanthopholis platypus, Aepisaurus, Agustiniidae, Amygdalodon, Asiatosaurus, Astrodon johnstoni, Atlantosauridae, Atlantosaurus, Barosaurus affinis, Blikanasauridae, Bothriospondylidae, Bothriospondylus elongatus, Bothrosauropodidae, Bothrosauropodoidea, Brachiosaurus nougaredi, Brontopodidae, Brontopodus, Brontosauridae, Bruhathkayosaurus, Camarasauroidea, Campylodoniscus, Cetiosaurus epioolithicus, Cetiosaurus hypoolithicus, Cetiosaurus longus, Cetiosaurus medius, Chiayusaurus, Chinshakiangosaurus, Chondrosteosaurus, Chubutisauridae, Clasmodosaurus, Clasmodosaurus spatula, Dachongosaurus, Damalasaurus, Eosauropoda, Eusauropoda, Faveoloolithidae, Gigantosaurus, Gravisauria, Hamanosauripus, Haplocanthosauridae, Herrerasauridae, Homalosauropodidae, Homalosauropodoidea, Iguanodon praecursor, Isanosaurus, Koreanosauripus, Kotasaurus, Kunmingosaurus, Lamplughsaura, Lancanjiangosaurus, Lessemsauridae, Liujianpus, Mamenchisauroidea, Microdontosaurus, Microsaurops, Morinosaurus, Morinosaurus priscus, Morosauridae, Neosodon, Nurosaurus, Ohmdenosaurus, Oplosaurus, Ornithopsidae, Oshanosaurus, Parabrontopodidae, Parabrontopodus, Pleurocoelus altus, Pleurocoelus nanus, Pleurocoelus valdensis, Polyonyx, Protognathosaurus, Pulanesaura, Qinlingosaurus, Ravatichnus, Rotundichnus, Sanpasaurus, Tapinosaurus, Tendaguriidae, Titanosaurus lydekkeri, Titanosaurus montanus, Ultrasaurus, Vulcanodon, Zizhongosaurus
Ecology: ground dwelling herbivore