Classification of Perez et al. 2011

Superfm. Physeteroidea Gray 1868
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G. †Diaphorocetus Ameghino 1894
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†Diaphorocetus pouchetti Moreno 1892
G. †Idiorophus Kellogg 1925
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†Idiorophus patagonicus Lydekker 1894
G. †Preaulophyseter Caviglia and Jorge 1980
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†Preaulophyseter gualichensis Caviglia and Jorge 1980
Invalid names: Aulophyseter rionegrensis Gondar 1974 [invalid subgroup]