Classification of Albright et al. 2007
Fm. †Polycotylidae Williston 1908
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Subfm. †Palmulainae Albright et al. 2007
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Subfm. †Polycotylinae Albright et al. 2007
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G. †Dolichorhynchops Williston 1902
G. †Polycotylus Cope 1869
Invalid names: Polycotyilnae Albright et al. 2007 [empty]