Classification of Druckenmiller and Russell 2008

Subcl. Diapsida Osborn 1903 [diapsid]
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Subor. †Sauropterygia Owen 1859
Superor. †Sauropterygia Owen 1859
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Or. †Plesiosauria de Blainville 1835 [plesiosaur]
Subor. †Plesiosauria de Blainville 1835 [plesiosaur]
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G. †Nichollsia Druckenmiller and Russell 2008
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Nichollsia borealis Druckenmiller and Russell 2008