Classification of Everhart 2004

Cl. Chondrichthyes Huxley 1880 [cartilaginous fish]
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Subcl. Elasmobranchii Bonaparte 1838 [elasmobranch]
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Superor. Euselachii Hay 1902
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Unr. †Hybodontiformes Patterson 1966
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Superfm. †Hybodontoidea Agassiz 1834
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Fm. †Polyacrodontidae Glükman 1964
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G. †Polyacrodus Jaekel 1889