Classification of Johns 1997

Cl. Chondrichthyes Huxley 1880 [cartilaginous fish]
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Subcl. Elasmobranchii Bonaparte 1838 [elasmobranch]
Unr. Neoselachii Compagno 1977
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Superor. Squalomorphii Compagno 1973
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Or. †Synechodontiformes Duffin and Ward 1993
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Fm. †Palaeospinacidae Regan 1906
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G. †Synechodus Woodward 1888
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Synechodus incrementum Johns 1997
Synechodus volaticus Johns 1997
Unr. Elasmobranchii Bonaparte 1838 [elasmobranch]
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G. †Carinasubcorona Johns 1997
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G. †Complanicorona Johns 1997
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Complanicorona glabra Johns 1997
G. †Coniunctio Johns 1997
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Coniunctio aequirugosa Johns 1997
Coniunctio multirugosa Johns 1997
G. †Duplisuggestus Johns 1997
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G. †Fragilicorona Johns 1997
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G. †Glabrisubcorona Johns 1997
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G. †Gracilisuggestus Johns 1997
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G. †Labascicorona Johns 1997
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Labascicorona alata Johns 1997
G. †Labrilancea Johns 1997
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G. †Lobaticorona Johns 1997
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G. †Minuticorona Johns 1997
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Minuticorona uniculmen Johns 1997
G. †Ornatilabrilancea Johns 1997
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G. †Parvidiabolus Johns 1997
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Parvidiabolus acutus Johns 1997
Parvidiabolus convexus Johns 1997
Parvidiabolus obliquus Johns 1997
G. †Parviscapha Johns 1997
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Parviscapha trivela Johns 1997
Parviscapha univelum Johns 1997
G. †Proprigalea Johns 1997
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Proprigalea languidula Johns 1997
Proprigalea mediglabra Johns 1997
Proprigalea medirugosa Johns 1997
G. †Rugosicorona Johns 1997
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Rugosicorona devexa Johns 1997
G. †Sacrisubcorona Johns 1997
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G. †Suaviloquentia Johns 1997
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G. †Undulaticorona Johns 1997
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Unr. Euselachii Hay 1902
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Superfm. †Hybodontoidea Agassiz 1834
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Fm. †Acrodontidae Casier 1959
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G. †Acrodus Agassiz 1834
Fm. †Polyacrodontidae Glükman 1964
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G. †Polyacrodus Jaekel 1889