Classification of O'Keefe 2001
Superor. †Sauropterygia Owen 1859
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Or. †Eosauropterygia Rieppel 1994
Unr. †Pistosauria Baur 1890
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Or. †Plesiosauria de Blainville 1835 [plesiosaur]
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Superfm. †Plesiosauroidea Welles 1943
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G. †Plesiosaurus de la Beche and Conybeare 1821
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†Plesiosaurus brachypterygius Huene 1923
†Plesiosaurus dolichodeirus Conybeare 1824
†Plesiosaurus guilelmiimperatoris Dames 1895
Invalid names: Euplesiosauria O'Keefe 2001 [empty]
Superfm. †Pliosauroidea Welles 1943
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Fm. †Pliosauridae Seeley 1874
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G. †Macroplata Swinton 1930
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†Macroplata longirostris Tate and Blake 1876
†Macroplata tenuiceps Swinton 1930
Fm. †Rhomaleosauridae Nopcsa 1928
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G. †Rhomaleosaurus Seeley 1874
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†Rhomaleosaurus cramptoni Carte and Baily 1863
†Rhomaleosaurus megacephalus Stutchbury 1846
†Rhomaleosaurus victor Fraas 1910
†Rhomaleosaurus zetlandicus Phillips 1854
Invalid names: Pistosauridae Zittel 1887 [empty]
Or. †Placodontia Cope 1871 [placodont]
Unr. †Plesiosauria de Blainville 1835 [plesiosaur]
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