Classification of Stumpf and Kriwet 2019
Unr. Neoselachii Compagno 1977
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Fm. †Agalidae Rees 2000
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Or. Squalomorphii Compagno 1973
Or. †Synechodontiformes Duffin and Ward 1993
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Fm. †Palaeospinacidae Regan 1906
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G. †Palidiplospinax Klug and Kriwet 2008
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†Palidiplospinax enniskilleni Duffin and Ward 1993
†Palidiplospinax occultidens Duffin and Ward 1993
Superor. Squalomorphii Compagno 1973
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Or. †Hybodontiformes Patterson 1966
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Superfm. †Hybodontoidea Agassiz 1834
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G. †Lissodus Brough 1935
Fm. †Lonchidiidae Herman 1977