Synonyms: Allophagi Jaekel 1914, Cetiosauria Seeley 1874, Opisthocoelia Owen 1859
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: Saurischia according to V. Lim et al. 2023
See also Agnolín et al. 2023, Agnolin et al. 2023, Anonymous 1879, Apaldetti et al. 2011, Arldt 1909, Baird and Horner 1979, Bakker 1986, Bakker and Galton 1974, Baur 1887, Baur 1891, Benton 1979, Benton 1990, Bittencourt and Langer 2011, Bonaparte 1978, Buscalioni and Sanz 1987, Carroll 1988, Casal et al. 2007, Charig 1967, Chure et al. 2006, Colbert 1964, Cope 1883, del Corro 1975, Delair 1960, Delair 1973, Dollo 1884, Dollo 1885, Dong et al. 1983, Ellenberger 1972, Gadow 1897, Gadow 1898, Gadow 1901, García et al. 2008, Gorscak et al. 2014, Hatcher 1903, Haubold 1971, Haubold 1974, Hay 1902, Hay 1930, Huene 1909, Huene 1914, Huene 1914, Huene 1914, Huene 1914, Huene 1926, Huene 1927, Huene 1929, Huene 1929, Huene 1948, Huene 1954, Huene 1958, Huene and Matley 1933, Ibiricu et al. 2017, Jaekel 1911, Jaekel 1914, Jain et al. 1975, Janensch 1914, Joleaud 1922, Knoll 2005, Krebs 1974, Kuhn 1939, Kuhn 1946, Kuhn 1966, Lacovara et al. 2014, Lapparent 1947, Leal and Azevedo 2003, Lull 1915, Lull 1924, Lydekker 1885, Lydekker 1888, Mansel-Pleydell 1902, Marsh 1878, Marsh 1881, Marsh 1884, Marsh 1885, Marsh 1894, Marsh 1895, Marsh 1896, Martinelli and Forasiepi 2004, Matthew 1915, McGinnis 1982, McGrew et al. 1959, McIntosh 1981, McKelvey 1920, McPhee et al. 2015, Milàn and Mateus 2024, Moyano-Paz et al. 2022, Nopcsa 1901, Nopcsa 1923, Nopcsa 1928, Novas et al. 2011, Osborn 1903, Osborn 1904, Ostrom 1980, Owen 1859, Owen 1860, Owen 1861, Parks 1935, Parsch 1963, Pérez-Moreno et al. 2024, Perrier 1928, Previtera and González Riga 2008, Quenstedt 1882, Reig 1970, Riggs 1903, Romer 1956, Romer 1966, Roxo 1937, Russell 1984, Salgado et al. 1997, Santafé et al. 1982, Sauvage 1896, Sauvage 1898, Sauvage 1900, Sauvage 1914, Seeley 1879, Seeley 1887, Seeley 1888, Seeley 1892, Sereno 1989, Sereno 1997, Sereno 1998, Sereno 1999, Smith and Pol 2007, Steel 1970, Swinton 1934, Swinton 1936, Swinton 1970, Tang et al. 2001, Tatarinov 1964, Taylor et al. 2011, Tornier 1913, Upchurch et al. 2004, Upchurch et al. 2007, Van Den Broeck 1900, von Zittel 1911, Williston 1878, Wilson and Sereno 1998, Winkler 1893, Woodward 1898, Xing et al. 2015, Yates 2010, Zhang et al. 2024, Zhao 1983 and Zittel 1890
Sister taxa: Alwalkeria, Anatopus, Anticheiropus, Argoides, Aristosuchia, Avalonianus, Coelurosaurichnus, Deuterotetrapous, Eusaurischia, Nhandumirim, Pachypodosauria, Pachypodosauroidea, Palaeopoda, Parachirotherium, Platypterna, Plesiornis, Saurichnium, Saurischichnus, Streptospondylus recentior, Thecospondylus, Trihamus, Trimabus
Subtaxa: Acanthopholis platypus Aepisaurus Agustiniidae Archaeodontosaurus Asiatosaurus Astrodon johnstoni Atlantosauridae Atlantosaurus Barosaurus affinis Blikanasauridae Bothriospondylidae Bothriospondylus elongatus Bothrosauropodidae Bothrosauropodoidea Brachiosaurus nougaredi Brontopodidae Brontopodus Brontosauridae Bruhathkayosaurus Calorckosauripus Camarasauroidea Campylodoniscus Cetiosaurus epioolithicus Cetiosaurus hypoolithicus Cetiosaurus longus Cetiosaurus medius Chiayusaurus Chinshakiangosaurus Chondrosteosaurus Chubutisauridae Clasmodosaurus Clasmodosaurus spatula Dachongosaurus Damalasaurus Eosauropoda Faveoloolithidae Gigantosaurus Gravisauria Hamanosauripus Haplocanthosauridae Herrerasauridae Homalosauropodidae Homalosauropodoidea Iguanodon praecursor Isanosaurus Koreanosauripus Kotasaurus Kunmingosaurus Lamplughsaura Lancanjiangosaurus Lessemsauridae Mamenchisauroidea Mamenchisaurus fuxiensis Mamenchisaurus guangyuanensis Mamenchisaurus yunnanensis Megalobrontes Microdontosaurus Microsaurops Morinosaurus Morinosaurus priscus Morosauridae Neosodon Nurosaurus Ohmdenosaurus Oplosaurus Ornithopsidae Oshanosaurus Parabrontopodidae Pleurocoelus altus Pleurocoelus nanus Pleurocoelus valdensis Polyonyx Pulanesaura Qinlingosaurus Ravatichnus Rotundichnus Sanpasaurus Tapinosaurus Tendaguriidae Titanosaurus lydekkeri Titanosaurus montanus Ultrasaurus Vulcanodon Zizhongosaurus