Alternative spelling: Sauropterygii
Full reference: R. Owen. 1859. Palaeontology. The Encyclopaedia Brittanica, or Dictionary of Arts, Sciences, and General Literature (8th Edition) 17:91-176
Parent taxon: Diapsida according to P. S. Druckenmiller and A. P. Russell 2008
See also Brown 1981, Carroll 1981, Carroll 1988, Clark et al. 2024, Cope 1871, Cope 1875, Fostowicz-Frelik and Gazdzicki 2001, Gasparini and Salgado 2000, Günther 1886, Hay 1902, Hay 1930, Hiller and Mannering 2004, Hiller and Mannering 2005, Huene 1954, Jaekel 1910, Jaekel 1911, Jiang et al. 2006, Kuhn 1946, Kuhn 1966, Leidy 1873, Marx et al. 2021, Nopcsa 1928, Osborn 1903, Osborn 1904, Otero et al. 2013, Otero et al. 2014, Otero et al. 2009, Owen 1859, Owen 1860, Owen 1861, Rieppel 1989, Roxo 1937, Sander 1989, Serratos et al. 2017, Smith and Araújo 2017, Storrs 1991, Storrs 1997, Swinton 1934, Thurmond 1968, Thurmond and Jones 1981, Vincent and Storrs 2019, Welles and Gregg 1971, Wiffen and Moisley 1986, Woodward 1898, Zittel 1890 and Zverkov et al. 2023
Sister taxa: Adelosaurus, Araeoscelidia, Archelosauria, Archosauromorpha, Diaptosauria, Dolerosaurus, Drepanosauromorpha, Endennasauridae, Eosuchia, Fremouwsauridae, Horaffia, Hupehsuchia, Ichthyosauromorpha, Lanthanolania, Palacrodon, Prodiapsida, Rysosteus, Saurosphargidae, Stauromatodon, Thalattosauriformes, Utahdactylus, Utahdactylus kateae
Subtaxa: Atopodentatus Cercidopleura Dicranopleura Eosauropterygia Eusauropterygia Ischyrosaurus Microleptosaurus Nanchangosauroidea Nothosauria Nothosauriformes Pistosauria Placodontia Placodontiformes Plesiosauria Simosauria
Ecology: