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Fossil collection records
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Classification of O'Gorman et al. 2018
Superor. †
Sauropterygia
Owen 1859
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Or. †
Plesiosauria
de Blainville 1835 [plesiosaur]
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Fm. †
Elasmosauridae
Cope 1869 [elasmosaur]
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Unr. †
Weddellonectia
O'Gorman and Coria 2017