After Nowak, 1990, McKenna & Bell, 1997, de Muizon, 1993, Hamilton, Caballero, Collins & Browell, 2001, Lambert, 2005, Uhen, 2008, and Geisler, Colbert & Carew, 2014, with taxa from Uhen, 2000–2006 [“The Paleobiology Database”]

<==o Odontoceti Flower, 1867 [Odontoceta Ameghino, 1894; Delphinoceti Abel, 1919; Squaloceti, Abel, 1919] (toothed whales; hammasvalaat)
   |--o †Xenorophidae Uhen, 2008 sensu Geisler et al., 2014
   |  |-- ChM PV4746
   |  `--+-- †Archaeodelphis patrius
   |     `--+--o †Xenorophus Kellogg, 1923
   |        |  |-- †X. sp.
   |        |  `-- †X. sloani Kellogg, 1923
   |        `--+--+-- ChM PV4834
   |           |  `-- ChM PV5711
   |           `--+-- †Albertocetus meffordorum Uhen, 2008
   |              `--+-- GSM 1098
   |                 `--+-- ChM PV2758
   |                    `-- †Cotylocara macei Geisler, Colbert & Carew, 2014
   `--+--+-- ChM PV4178
      |  `-- †Agorophius pygmaeus (Müller, 1849) Cope, 1895 [Agorophiidae Abel, 1914]
      `--+--+-- ChM PV5852
         |  `-- †Simocetus rayi Fordyce, 2002 [Simocetidae  Fordyce, 2002]
         `--+--o †Patriocetus (van Beneden, 1865) Abel, 1913 [Patriocetidae Abel, 1913; Sqalodontidae; Patriocetinae Abel, 1913]
            |  |-- †P. sp. indet.
            |  |-- †P. denggi Abel, 1913 [Cetotheriopsis linziana (Brandt, 1871)]
            |  |-- †P. ehrlichi (Van Beneden, 1865) (type)
            |  |-- †P. grateloupii (Van Beneden, 1865)
            |  `-- †P. kazakhstanicus Dubrovo & Sanders, 2000
            `--+-- ChM PV4961
               `--+--+-- ChM PV2764
                  |  `-- ChM PV2761
                  `--+--o Waipatiidae Fordyce, 1994 [paraphyletic Squalodontoidea Brandt, 1872]
                     |  |-- †Sulakocetus dagestanicus Mchedlidze, 1976
                     |  `-- †Waipatia maerewhenua Fordyce, 1994
                     `--+-- ChM PV4802
                        `--+==Squalodontidae Brandt, 1873 [Mesoceti Dames, 1894; Squalodontinae Rothausen, 1968] [paraphyletic Squalodontoidea Brandt, 1873]
                           `--+-- Physeteroidea Gray, 1821 (sperm whales and relatives; kaskelotinsukuiset hammasvalaat)
                              `--+==o †Rhabdosteidae Gill, 1871 [Eurhinodelphidae Abel, 1901; Eurhinodelphinidae] [Eurhinodelphinoidea de Muizon, 1988] [paraphyletic Squalodontoidea Brandt, 1872]
                                 |  |?- †Ceterhinops longifrons Leidy, 1877
                                 |  |?- †Cyrtodelphis bogatshowi Mchedlidze 1964
                                 |  |?- †Macrodelphinus kelloggi Wilson, 1935
                                 |  |?- †Rhabdosteus latiradix Cope, 1867 (nomen dubium) (Odontoceti incertae sedis)
                                 |  |?-o †Argyrocetus Lydekker, 1893 [“Doliodelphis” Wilson 1935 (non Doliodelphis littlei)
                                 |  |  |-- †A. bakersfieldensis (Wilson 1935)
                                 |  |  |-- †A. joaquinensis Kellogg 1932 [Doliodelphis littlei Wilson 1935; †Eurhinodelphis extensus Wilson 1935]
                                 |  |  `-- †A. patagonicus Lydekker 1894
                                 |  |?- †Phocaenopsis mantelli Huxley, 1859
                                 |  |--o †Schizodelphis Gervais, 1861 sensu Lambert, 2005
                                 |  |  |?- †S. barnesi Myrick, 1979
                                 |  |  |?- †S. compressus Portis, 1886
                                 |  |  |?- †S. planus Gervais, 1859
                                 |  |  |?- †S. squalodontoides Longhi, 1897
                                 |  |  |-- †S. longirostris (Du Bus, 1867) Lambert, 2005 [Eurhinodelphis longirostris Du Bus, 1867; Eurhinodelphis ambiguus Du Bus, 1867; Priscodelphinus elegans Du Bus, 1872; Priscodelphinus morckhoviensis Du Bus, 1872; Priscodelphinus pulvinatus Du Bus, 1872; Schizodelphis longirostris (Du Bus, 1867) Lambert, 2005]
                                 |  |  `?- †S. sulcutus (Gervais, 1853)
                                 |  `--+-- †Ziphiodelphis abeli Dal Piaz, 1908
                                 |     `--+--o †Eurhinodelphis Du Bus, 1867 sensu Lambert, 2005
                                 |        |  |-- †E. cocheteuxi Du Bus, 1867 [Priscodelphinus crassus Du Bus, 1872; Priscodelphinus declivus Du Bus, 1872; Priscodelphinus robustus Du Bus, 1872]
                                 |        |  |-- †E. cristatus (Du Bus, 1872)
                                 |        |  |-- †E. bossi Kellogg, 1925
                                 |        |  |-- †E. sigmoideus Pilleri, 1985
                                 |        |  `-- †E. belluensis Pilleri, 1985
                                 |        `-- Hyperoodontoidea Gray, 1846 sensu McKenna & Bell, 1997 [Ziphioidea] (beaked whales and relatives; nokkavalaansukuiset hammasvalaat)
                                 `--+-- Platanistoidea Simpson, 1945 [Platanistida Fordyce & de Muizon, 2001] (jokivalaidensukuiset hammasvalaat)
                                    `-- Delphinida de Muizon, 1988 [Delphinoidea sensu lato] (dolphins and relatives; delfiininsukuiset valaat)

Odontoceti incertae sedis:

Hadrodelphis Kellogg, 1966
        †H. calvertense Kellogg, 1966 (type)
        †H. poseidon Ginsburg & Janvier, 1971
    †Megalodelphis Kellogg, 1944 [nomen dubium]
    †Pachyacanthus Brandt, 1871
        †P. andrussovi Dombrovsky, 1925
        †P. bajarunasi Dombrovsky, 1925
        †P. letochae Brandt, 1873
        †P. suessii Brandt, 1871 [Pachyacanthus trachyspondylus Brandt, 1871]

Reference(s):