Classification of Seeley 1865

G. †Plesiosaurus de la Beche and Conybeare 1821
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†Plesiosaurus cramptoni Carte and Baily 1863
†Plesiosaurus dolichodeirus Conybeare 1824
†Plesiosaurus etheridgii Huxley 1858
†Plesiosaurus hawkinsi Owen 1840