After Savage, 1978, Nowak, 1991, McKenna & Bell, 1997, and Lambert, 1997, with fossil species from “The Paleobiology Database”

<==o Lutrinae (otters; saukot)
   |?- †Torolutra ougandensis Petter, Pickford & Howell, 1991; E.Af. Mioc.
   |?-o †Mionictis Matthew, 1924
   |  |-- †M. angustidens Hall, 1930 [Brachypsalis angustidens]
   |  |-- †M. artenensis Ginsburg, 1968
   |  |-- †M. dubia (de Blainville, 1841)
   |  |-- †M. elegans Matthew ,1924
   |  |-- †M. incertus Matthew, 1924
   |  |-- †M. letifer Cook & Macdonald, 1962
   |  `-- †M. pristinus (Matthew & Gidley, 1904) [Brachypsalis pristinus; Lutra pristina]
   |?-o †Siamogale Ginsburg, Ingavat & Tassy, 1983; Mioc. SEAs.
   |  |-- †S. thailandica Ginsburg, Ingavat & Tassy, 1983
   |  `-- †S. melilutra Wang, Grohé, Su, White, Ji, Kelley, Jablonski, Deng, You & Yang, 2017
   `--+--o Lutrini (otters; tavalliset saukot)
      |  |--o †Paralutra Roman & Viret, 1934 [paraphyletic sensu Wang et al., 2017]
      |  |  |?- †P. garganensis Willemsen, 1983
      |  |  |-- †P. jaegeri Fraas, 1862
      |  |  |-- †P. lorteti Filhol, 1879
      |  |  `-- †P. transdanubica Kretzoi 1951
      |  `--+--o Lutra Brisson, 1762 [Basarabictis; Plesiolatax; Nesolutra Bate, 1935; Cyrnolutra Pereira & Salotti, 2000] (Eurasian otters; saukot)
      |     |  |?- †“Lutra” libyca Stromer, 1914
      |     |  |?- †L. aonychoides (Zdansky, 1924) [Aonyx aonychoides Zdansky, 1924]
      |     |  |?- †L. affinis Gervais, 1859
      |     |  |?- †L. bravardi Pomel, 1843
      |     |  |?- †L. bressana Deperet, 1893
      |     |  |?- †L. castiglionis (Pereira & Salotti, 2000) [Cyrnolutra castiglionis Pereira & Salotti, 2000]
      |     |  |?- †L. fatimazohrae Geraads, 1997
      |     |  |?- †L. hessica Lydekker, 1890
      |     |  |?- †L. licenti Teilhard & Piveteua, 1930
      |     |  |?- †L. simplicidens Thenius, 1965
      |     |  |?- †L. trinacriae Burgio & Fiore, 1988
      |     |  |?- †L. euxena (Bate, 1935) [Nesolutra euxena Bate, 1935]
      |     |  |-- (Hydrictis) maculicollis (Lichtenstein, 1835) Pocock, 1921 (Spotted-necked otter; täpläsaukko)
      |     |  `--o (Lutra) Brisson, 1762
      |     |     |-- L. (L.) lutra (Linnaeus, 1758) [Mustela lutra Linnaeus, 1758] (Eurasian otter, common otter; saukko)
      |     |     |?- L. (L.) nippon Imaizumi & Yoshiyuki, 1989 (japanese otter; japaninsaukko)
      |     |     `-- L. (L.) sumatrana Gray, 1865 (Hairy-nosed otter; karvakuonosaukko)
      |     `--+--o Lontra Gray, 1843 (New World otters; uudenmaailmansaukot)
      |        |  |-- L. canadensis (Schreber, 1777) (North American otter; amerikansaukko)
      |        |  |--o L. longicaudis (Olfers, 1818) (neotropical otter; neotropiikinsaukko)
      |        |  |  |-- L. l. annectens
      |        |  |  |-- L. l. colombiana
      |        |  |  |-- L. l. enudris
      |        |  |  |-- L. l. incarum
      |        |  |  |-- L. l. longicaudis (neotropiikinsaukko)
      |        |  |  `-- L. l. platensis (laplatansaukko)
      |        |  |-- L. provocax(Thomas, 1908) (Southern river otter; eteläamerikansaukko)
      |        |  `-- L. felina (Molina, 1782) (Marine otter; rantasaukko)
      |        `--+-- †Algarolutra majori (Malatesta, 1978) Malatesta & Willemsen, 1986 [Cyrnaonyx majori Malatesta, 1978]
      |           `--+-- †Sardolutra ichnusae (Malatesta, 1977) [Nesolutra ichnusae Malatesta, 1977]
      |              `--+-- †Satherium piscinarium (Leidy, 1873) Gazin, 1934 [Lutra piscinaria Leidy, 1873; Lutra ingens Gazin, 1934; Satherium ingens Gazin, 1934 Satherium piscinaria Gazin, 1934] (Hagerman's otter)
      |                 `--+--o Pteronura brasiliensis (Gmelin, 1788) Gray, 1837 (giant otter; jättiläissaukko)
      |                    |  |-- P. b. brasiliensis (Gmelin, 1788)
      |                    |  `-- P. b. paraguensis [P. b. paranensis]
      |                    `--o Lutrogale Gray, 1865 [Isolalutra Symeonides & Sondaar, 1975]
      |                       |-- †L. cretensis (Symeonides & Sondaar, 1975) [Isolalutra cretensis Symeonides & Sondaar, 1975] (Cretan Otter)
      |                       |?- †L. palaeoleptonyx (Falconer, 1868) [Lutra palaeoleptonyx Falconer, 1868]
      |                       |?- †L. robusta
      |                       `--o L. perspicillata (Geoffroy, 1826) (Smooth-coated otter; lyhytkarvasaukko)
      |                          |-- L. p. perspicillata
      |                          |-- L. p. maxwelli
      |                          `-- L. p. sindica      
      `--+--o Aonychini (clawless otters; kynnettömät saukot)
         |  |--o †Limnonyx Crusafont Pairo, 1950
         |  |  |-- †L. pontica (Nordmann, 1860) [Lutra pontica Nordmann, 1860]
         |  |  `-- †L. sinerizi Crusafont Pairo, 1950
         |  `--+-- †Cyrnaonyx antiqua (de Blainville, 1841) Helbing, 1935 [Lutra antiqua de Blainville, 1841]
         |     `--+--o Aonyx Lesson, 1827
         |        |  |--o (Aonyx) capensis (Schinz, 1821) (African clawless otter; valkoposkisaukko)
         |        |  |  |-- A. (A.) c. capensis (Schinz, 1821)
         |        |  |  |-- A. (A.) c. hindei (Thomas, 1905)
         |        |  |  `-- A. (A.) c. meneleki (Thomas, 1903)
         |        |  `--o (Paraonyx) congica (sic) (Lönnberg, 1910) [A. congicus] (kameruninsaukko)
         |        |     |-- A. (P.) c. microdon (Pohle, 1920) (kameruninsaukko)
         |        |     |-- A. (P.) c. congica (sic) (Lönnberg, 1910) (kongonsaukko)
         |        |     `-- A. (P.) c. philippsi (Hinton, 1921)
         |        `--+-- Amblonyx cinereus (Illiger, 1815) Rafinesque, 1832 [Aonyx cinerea] (Oriental Small-clawed otter; pikkusaukko)
         |           `-- †Megalenhydris barbaricina Willemsen & Malatesta, 1987
         `--o Enhydrini (sea otters; merisaukot)
            |--o †Vishnuonyx Pilgrim, 1932
            |  |-- †V. chinjiensis Pilgrim, 1932
            |  `-- †V. angololensis Werdelin, 2003
            `--+--o †Sivaonyx Pilgrim, 1931
               |  |-- †S. bathygnatha (Lydekker, 1884) [Lutra bathygnatha Lydekker, 1884]
               |  |-- †S. gandakasensis Pickford, 2007
               |  |-- †S. hendeyi Morales et al., 2005
               |  |-- †S. hessicus (Lydekker, 1890) Morales & Pickford, 2005 [=? Lutra hessica Lydekker, 1890]
               |  |-- †S. kamuhangirei Morales & Pickford, 2005
               |  |-- †S. senutae Morales & Pickford, 2005
               |  `-- †S. soriae Morales & Pickford, 2005
               `--+--o †Enhydriodon Falconer, 1868 [Amyxodon Falconer & Cautley, 1835]
                  |  |-- †E. aethiopicus Geraads, Eisenmann & Petter, 2004
                  |  |-- †E. africanus Stromer, 1931
                  |  |-- †E. dikikae Geraads, Alemseged, Bobe & Reed, 2011
                  |  |-- †E. ekecaman Werdelin, 2003
                  |  |-- †E. falconeri Pilgrim 1932
                  |  |-- †E. pattersoni
                  |  |-- †E. sivalensis
                  |  `?- †E. latipes
                  `--+-- †Tyrrhenolutra helbingi
                     `--+-- †Enhydritherium terraenovae
                        `--+-- †Paludolutra
                           `--o Enhydra Fleming, 1828 (sea otters; merisaukko)
                              |-- †E. macrodonta
                              `--o E. lutris (Linnaeus, 1758) [Lutra marina] (sea otter; merisaukko)
                                 |-- E. l. lutris (Linnaeus, 1758) (West Pacific sea otter; Asian sea otter; common sea otter; länsityynemeren merisaukko)
                                 |-- E. l. nereis (Merriam, 1904) (Southern sea otter; californian sea otter; kalifornianmerisaukko)
                                 `-- E. l. kenyoni (Wilson, 1991) (Northern sea otter; Alaskan sea otter; alaskanmerisaukko)

After Wang, Grohé, Su, White, Ji, Kelley, Jablonski, Deng, You & Yang, 2017

<==o Lutrinae
   |-- Pteronura brasiliensis
   `--+--o Lontra
      |  |-- L. canadensis
      |  `-- L. felina
      `--+--+-- Lutra lutra
         |  `-- Aonyx capensis
         `--+-- †Lutra aonychoides
            |--+-- †Paralutra jaegeri
            |  `--o †Siamogale
            |     |-- †S. thailandica
            |     `-- †S. melilutra
            `--+--+--+-- Enhydra lutris
               |  |  `-- †Enhydriodon
               |  `--+-- †Vishnuonyx
               |     `-- †Sivaonyx
               `--+-- †Tyrrhenolutra helbingi
                  `--+-- †Paralutra garganensis
                     `--+-- †Enhydritherium terraenovae
                        `-- †Paludolutra

Reference(s):

  • Wang, X., Grohé, C., Su, D. F., White, S. C., Ji, X., Kelley, J., Jablonski, N. G., Deng, T., You, Y. & Yang, X., 2017: A new otter of giant size, Siamogale melilutra sp. nov. (Lutrinae: Mustelidae: Carnivora), from the latest Miocene Shuitangba site in north-eastern Yunnan, south-western China, and a total-evidence phylogeny of lutrines.
    –Journal of Systematic Palaeontology: in press [doi: 10.1080/14772019.2016.1267666]

Reference(s):