Classification of Ketchum and Benson 2010
Or. †Plesiosauria de Blainville 1835 [plesiosaur]
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G. †Archaeonectrus Novozhilov 1964
G. †Attenborosaurus Bakker 1993
Unr. †Plesiosauria de Blainville 1835 [plesiosaur]
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Invalid names: Neoplesiosauria Ketchum and Benson 2010 [empty]