Classification of Fostowicz-Frelik and Gazdzicki 2001

Cl. Reptilia Laurenti 1768 [reptile]
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Subcl. †Sauropterygia Owen 1859
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Or. †Plesiosauria de Blainville 1835 [plesiosaur]
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Superfm. †Plesiosauroidea Welles 1943
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Fm. †Elasmosauridae Cope 1869 [elasmosaur]