Classification of Underwood et al. 2011

Fm. Hexanchidae Gray 1851 [cow shark]
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G. †Gladioserratus Underwood et al. 2011
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Gladioserratus aptiensis Pictet 1865
Gladioserratus magnus Underwood et al. 2011
Fm. Odontaspidae Müller and Henle 1839 [sand tiger shark]
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G. †Eostriatolamia Glikman 1980
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G. †Cretalamna Glikman 1958
G. †Dwardius Siverson 1999
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Dwardius sudindicus Underwood et al. 2011