Classification of Lund 1989
G. †Harpacodus St. John and Worthen 1875
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†Harpacodus compactus St. John and Worthen 1875
†Harpacodus occidentalis St. John and Worthen 1875
Or. †Petalodontiformes Zangerl 1981
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Fm. †Belantseidae Lund 1989
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G. †Belantsea Lund 1989
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†Belantsea montana Lund 1989
†Belantsea occidentalis St. John and Worthen 1875
G. †Ctenoptychius Agassiz 1838
Fm. †Janassidae Jaekel 1899
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Fm. †Pristodontidae Woodward 1889
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G. †Megactenopetalus David 1944
G. †Peripristis St. John 1870
G. †Pristodus Davis 1883
Invalid names: Peripristidae Eastman 1902 [synonym]