Classification of Bianucci et al. 2011

Fm. Phocidae Gray 1821 [seal]
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Subfm. Monachinae Trouessart 1897
Subor. Odontoceti Flower 1867 [toothed whale]
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Infraor. Delphinida Muizon 1984
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Superfm. Delphinoidea Flower 1865
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Fm. †Kentriodontidae Slijper 1936
Superfm. Inioidea de Muizon 1988
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Fm. Pontoporiidae Gray 1870
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Invalid names: Brachydelphininae Rice 1998 [empty]
Superfm. †Eurhinodelphinoidea Muizon 1988
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Fm. †Eurhinodelphinidae Abel 1901
Fm. Ziphiidae Gray 1850 [beaked whale]
G. †Neosqualodon Dal Piaz 1904
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†Neosqualodon assenzae Dal Piaz 1904
Superfm. Physeteroidea Gray 1868
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Fm. Kogiidae Miller 1923 [pygmy sperm whale]
G. †Orycterocetus Leidy 1853
Superfm. Platanistoidea Simpson 1945
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Fm. †Squalodontidae Brandt 1873
Fm. †Waipatiidae Fordyce 1994
Invalid names: Phoca rugosidens Adams 1879 [nomen dubium]
Subor. Mysticeti Cope 1891
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Fm. †Mammalodontidae Mitchell 1989
†Squalodon melitensis Blainville 1840
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Invalid names: Squalodon scillae Agassiz 1841 [synonym]
Or. Sirenia Illiger 1811 [sirenian]
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Fm. Dugongidae Gray 1821 [dugong]