After Nowak, 1990, McKenna & Bell, 1997, de Muizon, 1993, Hamilton, Caballero, Collins & Browell, 2001, and, Uhen, 2000-2006 [“The Paleobilogy database”]

<==o Delphinida de Muizon, 1988 [Delphinoidea sensu lato] (dolphins and relatives; delfiininsukuiset valaat)
   |?- †Delphinavus newhalli Lull, 1914
   |?- †Graamocetus longicollis Hoch, 2004
   |?- †Hesperoinia dalpiazi Monchamart Zei, 1956 (nomen dubium)
   |?-o †Lamprolithax Kellogg, 1931
   |  |-- †L. annectens Kellogg, 1931
   |  `-- †L. simulans Kellogg, 1931
   |?- †Miodelphis californicus Wilson, 1935
   |?- †Nannolithax gracilis Kellogg, 1931
   |?- †Oedolithax mira Kellogg, 1931
   |?- †Oligodelphis azerbajdzanicus Aslanova & Mchedlidze, 1976
   |?- †Palaeophocaena andrussowi Abel, 1905
   |?- †Platylithax robusta Kellogg, 1931
   |?- †Protodelphinus capellinii Dal Piaz, 1916
   |?- †Sinanodelphis izumidaensis Makiyama, 1936
   |?- †Eurhinodelphis pacificus Matsumoto, 1926 (nomen dubium)
   |?- †Prionodelphis rovereti Frenguelli 1922 (nomen dubium)
   |?- †Acrodelphinidae Abel, 1905 [incl. Eoplatanistidae Muizon 1988]
   |--o †Lipotidae [Parapontoporiinae Barnes 1984; Lipotinae Barnes, 1985]
   |  |?- †Prolipotes yujiangensis Zhou et al., 1984 (nomen dubium)
   |  |--o †Parapontoporia Barnes, 1984
   |  |  |-- †P. pacifica Barnes, 1984
   |  |  |-- †P. sternbergi (Barnes, 1984)
   |  |  `-- †P. wilsoni Barnes, 1985
   |  `-- †Lipotes vexillifer (baiji; tungtinginvalas, kiinanjokidelfiini) [last sighted 2004]
   `--+--+--o Pontoporiidae Gray, 1870 [Stenodelphinae True, 1908]
      |  |  |?- †Piscorhynchus
      |  |  |--o †Brachydelphininae Rice, 1998
      |  |  |  |--o †Brachydelphis Muizon, 1988
      |  |  |  |  |-- †B. intermedia Muizon, 1988
      |  |  |  |  `-- †B. mazeasi Muizon, 1988
      |  |  |  `-- †Protophocaena minima Abel 1905
      |  |  `--o Pontoporinae Gray, 1870 (laplatandelfiinit)
      |  |     |-- †Pliopontos littoralis Muizon, 1983
      |  |     |-- †Pontistes rectifrons(Bravard, 1858) Burmeister, 1891 [Paleopontoporia paranense Doering, 1882; Pontivaga fischeri Ameghino, 1891; Pontoporia paranensis Bravard, 1859]
      |  |     `-- Pontoporia blainvillei (Gervais & d'Orbigny, 1844) Gray, 1846 [Stenodelphis; Pontoporia tenuirostris Malm, 1871] (fransiscana, laplatandelfiini)
      |  `--o Iniidae (iniinit)
      |     |-- †Plicodontinia mourai Miranda-Ribeiro, 1938 (nomen dubium)
      |     |-- †Proinia patagonica True, 1909
      |     |-- †Goniodelphis hudsoni Allen, 1941
      |     |-- †Ischyrorhynchus vanbenedeni Ameghino, 1891 [Anisodelphis brevirostratus Rovereto, 1915]
      |     |--o †Saurocetes Burmeister, 1871 [Pontoplanodes Ameghino, 1891; Saurodelphis Burmeister, 1891]
      |     |  |-- †S. argentinus Burmeister, 1871 [Pontoplanodes obliquus Ameghino, 1891; Saurocetes obliquus Ameghino, 1891; Saurodelphis acutirostratus Rovereto, 1915]
      |     |  `-- †S. gigas Cozzuol, 1988
      |     `-- Inia geoffrensis (Blainville, 1817) D'Orbingy 1834 [Delphinus amazonicus Spix & Martius, 1831; Delphinus inia Rapp, 1837; Inia amazonica Spix & Martins, 1823; Inia boliviensis d'Orbigny, 1834; Sotallia pallida Sanborn, 1949] (inia)
      `--o Delphinoidea
         |?- †Kentriodontidae Slijper, 1936 sensu Barnes, 1978
         `--+?-o †Albireonidae Barnes, 1984
            |  |?- †Albireonidae genera et species indet.
            |  `-- †Albireo whistleri Barnes, 1984
            |--+--o †Odobenocetopsidae de Muizon, 1993 (mursuvalaat)
            |  |  `--o †Odobenocetops de Muizon, 1993
            |  |     |-- †O. peruvianus de Muizon, 1993
            |  |     `-- †O. leptodon de Muizon, Domning & Parrish, 1999
            |  `--o Monodontidae Gray, 1821 [Delphinapteridae] (narwhals; sarvivalaat)
            |     |--o Delphinapterinae Gill, 1871 (maitovalaat)
            |     |  |-- †Denebola brachycephala Barnes, 1984
            |     |  `--o Delphinapterus Lacépède, 1804 [taxonomic history]
            |     |     |-- †D. concreta Cope, 1865
            |     |     |-- †D. cortesii Brandt, 1873
            |     |     |-- †D. dorofeevi Klumov & Barabash, 1935
            |     |     |-- †D. freimani Klumov, 1935
            |     |     |-- †D. lessonii Philippi, 1893
            |     |     |-- D. leucas (Pallas, 1776) [taxonomic history] (maitovalas)
            |     |     |-- †D. orcinus Cope, 1875
            |     |     |-- †D. tyrannus Cope, 1868
            |     |     `-- †D. vermontanus (Thompson, 1850)
            |     `--+?- Orcaella brevirostris Gray, 1866 [Orcanellinae] (iravadindelfiini) [treated as an orcinine by Uhen (2000-2006)]
            |        `--o Monodon Linnaeus, 1758 [Ceratodon Brisson, 1762; Ceratodontis Brisson, 1762; Diodon Storr, 1780; Narvalus Fischer, 1814; “Narwalus” Lacépède, 1804; Narwhalus Dumeril, 1806] [Monodontinae Miller, 1923; Monodontina Bonaparte, 1849]
            |           |-- †M. microcephalus Fleming, 1811
            |           `-- M. monoceros Linnaeus, 1758 [Monodon narhwal Blumenbach, 1779; Ceratodontis ceratodon Brisson, 1762; Monodon narhval Borowski, 1781; Ceratodon monodon Pallas, 1811; Narwalus andersonianus Lacépède, 1804; Narwalus microcephalus Lacépède, 1804; Narwalus vulgaris Lacépède, 1804] (narwhal; sarvivalas)
            `--+-- Phocaenidae Gray, 1821 [Phocoenidae Gray, 1821 sensu Flower, 1864] (porpoises; pyöriäiset)
               `-- Delphinidae Gray, 1821 [Catodontina Bonaparte, 1849; Monoceratina Gray, 1846; Orcina Bonaparte, 1849; “Hemisyntrachelidae” Slijper, 1936; Holodontidae Brandt, 1873; Cephalorhynchinae Fraser & Purves, 1960] (dolphins; delfiinit)

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