†suborder Simosauria Gervais 1845 (diapsid)
Parent taxon: Sauropterygia according to H. F. Osborn 1904
See also Rieppel 2000
Sister taxa: Atopodentatus, Cercidopleura, Dicranopleura, Eosauropterygia, Eusauropterygia, Ischyrosaurus, Microleptosaurus, Nanchangosauroidea, Nothosauria, Nothosauriformes, Pistosauria, Placodontia, Placodontiformes, Plesiosauria
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Simosauria in the database