Classification of Shimada et al. 2006
Or. †Pycnodontiformes Berg 1937
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Fm. †Pycnodontidae Agassiz 1833
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G. †Micropycnodon Hibbard and Graffham 1945
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†Micropycnodon kansasensis Hibbard and Graffham 1941
Or. †Pachycormiformes Berg 1940
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Fm. †Pachycormidae Woodward 1895
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G. †Protosphyraena Leidy 1857
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†Protosphyraena bentoniana Stewart 1898
†Protosphyraena nitida Cope 1873
Or. Elopiformes Sauvage 1875
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Fm. †Pachyrhizodontidae Cope 1872
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G. †Pachyrhizodus Agassiz 1850
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†Pachyrhizodus basalis Dixon 1850
†Pachyrhizodus minimus Stewart 1899
Fm. †Anacoracidae Casier 1947
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G. †Squalicorax Whitley 1939 [crow shark]
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†Squalicorax falcatus Agassiz 1843
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Invalid names: Corax boreaui Coquand 1860 [synonym], Corax elongatus Coquand 1860 [synonym], Corax heterodon Reuss 1845 [synonym], Corax obliquus Reuss 1845 [synonym], Galeocerdo hartwellii Cope 1872 [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 amonensis Cappetta and Case 1975
†Carcharias saskatchewanensis Case et al. 1990
†Carcharias tenuiplicatus Cappetta and Case 1975
Invalid names: Cenocarcharias Cappetta and Case 1999 [synonym]
Fm. †Cretoxyrhinidae Glückman 1958
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G. †Cretalamna Glikman 1958
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G. †Cretodus Sokolov 1965
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†Cretodus semiplicatus Agassiz 1843
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Invalid names: Otodus crassus Woodward 1888 [synonym], Otodus divaricatus Leidy 1872 [synonym], Otodus michoni Coquand 1860 [synonym], Otodus sulcatus Geinitz 1843 [synonym], Scyllium rugosus Williston 1900 [synonym]
G. †Cretoxyrhina Glikman 1958
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Or. †Ichthyodectiformes Bardack and Sprinkle 1969
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Fm. †Ichthyodectidae Crook 1892
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G. †Ichthyodectes Cope 1870
G. †Xiphactinus Leidy 1870
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†Xiphactinus audax Leidy 1870
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Invalid names: Portheus lestrio Cope 1873 [synonym], Portheus lowii Stewart 1898 [synonym], Portheus molossus Cope 1871 [synonym], Portheus mudgei Cope 1874 [synonym], Saurocephalus thaumas Cope 1870 [synonym], Xiphactinus brachygnathus Stewart 1898 [synonym]
†Xiphactinus vetus Leidy 1856
Subor. Enchodontoidei Berg 1937
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Fm. †Enchodontidae Woodward 1901
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G. †Enchodus Agassiz 1835
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†Enchodus gladiolus Cope 1872
†Enchodus lewesiensis Mantell 1822
†Enchodus petrosus Cope 1874
†Enchodus shumardi Leidy 1856
Or. †Tselfatiiformes Nelson 1994
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Fm. †Ptychodontidae
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G. †Ptychodus Agassiz 1834
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†Ptychodus anonymus Williston 1900
†Ptychodus decurrens Agassiz 1838
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Invalid names: Ptychodus depressus Dixon 1850 [synonym], Ptychodus multistriatus Woodward 1889 [synonym], Ptychodus oweni Dixon 1850 [synonym]
†Ptychodus occidentalis Leidy 1868
Fm. Parascylliidae Gill 1862 [collared carpetshark]
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G. †Pararhincodon Herman 1975