Classification of Páramo-Fonseca et al. 2018

Unr. †Plesiosauria de Blainville 1835 [plesiosaur]
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Superfm. †Pliosauroidea Welles 1943
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Fm. †Pliosauridae Seeley 1874
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Subfm. †Brachaucheninae Williston 1925
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G. †Sachicasaurus Páramo-Fonseca et al. 2018
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†Sachicasaurus vitae Páramo-Fonseca et al. 2018