Classification of Siverson 1997

Or. Hexanchiformes de Buen 1926
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Fm. Hexanchidae Gray 1851 [cow shark]
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G. Notorynchus Ayers 1855
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Notorynchus aptiensis Pictet 1865
Or. Lamniformes Berg 1958 [mackerel shark]
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Fm. †Cretoxyrhinidae Glückman 1958
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G. †Archaeolamna Siverson 1992
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G. †Cretolamna Glikman 1958
G. †Leptostyrax Williston 1900
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Leptostyrax bicuspidatus Williston 1900
G. †Paraisurus Glikman 1957
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Paraisurus compressus Sokolov 1978
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Invalid names: Paraisurus macrorhiza Kemp 1991 [synonym]
G. †Pseudoisurus Glikman 1957
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Pseudoisurus tomosus Glikman 1957
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Invalid names: Cretolamna woodwardi Herman 1977 [synonym]
G. †Synechodus Woodward 1888
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Synechodus subulatus Leriche 1951
Fm. †Anacoracidae Casier 1947
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G. †Squalicorax Whitley 1939 [crow shark]
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Squalicorax dalinkevichiusi Glikman and Shvazhaite 1971
Squalicorax primaevus Dalinkevicius 1935
Squalicorax primigenius Landemaine 1991
Squalicorax pristodontus Agassiz 1843 [crow shark]
Invalid names: Eoanacorax Glikman and Shvazhaite 1971 [synonym]
Fm. Odontaspididae Müller and Henle 1839 [sand tiger shark]
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G. Carcharias Rafinesque 1810 [sand shark]
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Carcharias striatula Dalinkevicius 1935
Or. †Synechodontiformes Duffin and Ward 1993
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Fm. †Palaeospinacidae Regan 1906
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G. †Paraorthacodus Glikman 1957
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Paraorthacodus conicus Davis 1890
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Invalid names: Paraorthacodus nerviensis Leriche 1929 [synonym]
Paraorthacodus recurvus Trautschold 1877
Squalicorax volgensis Glikman 1971
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Invalid names: Pseudocorax primulus Müller and Diedrich 1991 [synonym]