Category:Plesiosaurus

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DomainEukaryota • RegnumAnimalia • PhylumChordata • SubphylumVertebrata • InfraphylumGnathostomata • SuperclassisTetrapoda • ClassisReptilia • OrdoPlesiosauria • SubordoPlesiosauroidea • FamiliaPlesiosauridae • Genus: Plesiosaurus Conybeare, 1821