†order Sauropterygia Owen 1861 (diapsid)
Full reference: R. Owen. 1861. Palaeontology, or a Systematic Summary of Extinct Animals and their Geological Relations. Second Edition. Adam and Charles Black, Edinburgh 1-463
Parent taxon: Diapsida according to P. S. Druckenmiller and A. P. Russell 2008
Sister taxa: Adelosaurus, Araeoscelidia, Archosauromorpha, Claraziidae, Diaptosauria, Endennasauridae, Eosuchia, Fremouwsauridae, Hupehsuchia, Lanthanolania, Mesenosauridae, Pleurosauridae, Rhynchocephalia, Saurosphargidae, Tamaulipasaurus
Subtaxa: Cercidopleura, Dicranopleura, Doliovertebra, Eosauropterygia, Lariosauridae, Nothosauria, Nothosauriformes, Pistosauria, Placodontiformes, Sphenosaurus
Ecology: