Classification of McGowan and Motani 2003

G. †Leptopterygius Huene 1929
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Invalid names: Leptopterygius margaritatus von Huene 1922 [nomen dubium]
G. †Pessosaurus Wiman 1910
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Invalid names: Pessosaurus suevicus von Huene 1916 [nomen dubium]
G. †Simbirskiasaurus Otschev and Efimov 1985
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Invalid names: Simbirskiasaurus birjukovi Otschev and Efimov 1985 [nomen dubium]
G. †Myobradypterygius von Huene 1927
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Invalid names: Myobradypterygius mollensis Rusconi 1938 [nomen dubium]
G. †Plutoniosaurus Efimov 1997
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Invalid names: Plutoniosaurus bedengensis Efimov 1997 [nomen dubium]
G. †Merriamosaurus Maisch and Matzke 2002
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Invalid names: Merriamosaurus hulkei Maisch and Matzke 2000 [nomen dubium]
G. †Ancanamunia Rusconi 1942
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Invalid names: Ancanamunia espinacitense Rusconi 1949 [nomen dubium]
Superor. †Ichthyopterygia Owen 1840
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Unr. †Eoichthyosauria Motani 1999
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Or. †Ichthyosauria de Blainville 1835 [ichthyosaur]
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Fm. †Cymbospondylidae von Huene 1948
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G. †Cymbospondylus Leidy 1868
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†Cymbospondylus buchseri Sander 1989
Invalid names: Cymbospondylus germanicus von Huene 1916 [nomen dubium], Cymbospondylus natans Merriam 1908 [nomen dubium], Cymbospondylus parvus von Huene 1916 [nomen dubium]
Unr. †Hueneosauria Maisch and Matzke 2000
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Subor. †Mixosauria Motani 1999
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Fm. †Mixosauridae Baur 1887
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G. †Mixosaurus Baur 1887
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†Mixosaurus atavus Quenstedt 1852
†Mixosaurus cornalianus Bassani 1886
†Mixosaurus fraasi Merriam 1910
†Mixosaurus kuhnschnyderi Brinkmann 1998
Invalid names: Mixosaurus helveticus von Huene 1916 [nomen dubium], Mixosaurus intermedius von Huene 1916 [nomen dubium], Mixosaurus major Fraas 1891 [nomen dubium], Mixosaurus maotaiensis Young 1965 [nomen dubium], Mixosaurus timorensis Broili 1931 [nomen dubium]
G. †Tholodus Von Meyer 1851
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†Tholodus schmidi Von Meyer 1851
Invalid names: Merriamosauriformes McGowan and Motani 2003 [empty]
Fm. †Parvinatatoridae McGowan and Motani 2003
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G. †Parvinatator Nicholls and Brinkman 1995
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†Parvinatator wapitiensis Nicholls and Brinkman 1995
G. †Thaisaurus Mazin et al. 1991
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†Thaisaurus chonglakmanii Mazin et al. 1991
Fm. †Utatsusauridae McGowan and Motani 2003
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G. †Utatsusaurus Shikama and Kamei 1978
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†Utatsusaurus hataii Shikama and Kamei 1978
Invalid names: Ekbainacanthus Yakowlew 1902 [nomen dubium], Grippidia Wiman 1933 [empty], Ichthyoterus Rouiellier 1847 [nomen dubium], Macropterygius Huene 1922 [nomen dubium], Pachygonosaurus von Huene 1916 [nomen dubium], Perrinosaurus Merriam 1938 [nomen dubium], Pessopteryx Wiman 1910 [nomen dubium], Rotundopteryx Maisch and Matzke 2000 [nomen dubium], Spitsbergenosaurus Mazin 1981 [nomen dubium]