Anisosiren Kordos, 1979 † (verified source for family)
Anisosiren Kordos, 1979 † (current name source)
Anomotherium Siegfried, 1965 † (current name source)
Anomotherium Siegfried, 1965 † (verified source for family)
Archaeosiren Abel, 1913 † accepted as Eosiren Andrews, 1902 † (source of synonymy)
Archaeosiren Abel, 1913 † accepted as Eosiren Andrews, 1902 † (name verified source)
Archaeosiren Abel, 1913 † accepted as Eosiren Andrews, 1902 † (basis of record)
Archaeosiren Abel, 1913 † accepted as Eosiren Andrews, 1902 † (verified source for family)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (basis of record)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (extant flag source)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (habitat flag source)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (verified source for family)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (current name source)
Ashokia Bajpai, Domning, Das & Mishra, 2009 † (name verified source)
Ashoroa Inuzuka, 2000 † (verified source for family)
Ashoroa Inuzuka, 2000 † (current name source)
Behemotops Domning, Ray & McKenna, 1986 † (verified source for family)
Behemotops Domning, Ray & McKenna, 1986 † (current name source)
Bharatisiren Bajpai & Domning, 1997 † (verified source for family)
Bharatisiren Bajpai & Domning, 1997 † (current name source)
Caribosiren Reinhart, 1959 † (current name source)
Caribosiren Reinhart, 1959 † (verified source for family)
Cheirotherium Bruno, 1839 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Cheirotherium Bruno, 1839 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Cornwalliidae † accepted as Desmostylidae Osborn, 1905 † (source of synonymy)
Cornwallius Hay, 1924 † (current name source)
Cornwallius Hay, 1924 † (verified source for family)
Corystosiren Domning, 1990 † (current name source)
Corystosiren Domning, 1990 † (verified source for family)
Crassitherium van Beneden, 1871 † accepted as Halitherium Kaup, 1838 † (source of synonymy)
Crassitherium van Beneden, 1871 † accepted as Halitherium Kaup, 1838 † (verified source for family)
Crenatosiren Domning, 1991 † (verified source for family)
Crenatosiren Domning, 1991 † (current name source)
Desmostylella Nagao, 1937 † accepted as Desmostylus Marsh, 1888 † (verified source for family)
Desmostylella Nagao, 1937 † accepted as Desmostylus Marsh, 1888 † (source of synonymy)
Desmostylus Marsh, 1888 † (current name source)
Desmostylus Marsh, 1888 † (verified source for family)
Dioplotherium Cope, 1883 † (current name source)
Dioplotherium Cope, 1883 † (verified source for family)
Domningia Thewissen & Bajpai, 2009 † (name verified source)
Domningia Thewissen & Bajpai, 2009 † (current name source)
Domningia Thewissen & Bajpai, 2009 † (basis of record)
Domningia Thewissen & Bajpai, 2009 † (habitat flag source)
Domningia Thewissen & Bajpai, 2009 † (extant flag source)
Domningia Thewissen & Bajpai, 2009 † (verified source for family)
Dusisiren Domning, 1978 † (current name source)
Dusisiren Domning, 1978 † (verified source for family)
Dystomus Fischer-Waldheim, 1813 accepted as Hydrodamalis Retzius, 1794 (verified source for family)
Dystomus Fischer-Waldheim, 1813 accepted as Hydrodamalis Retzius, 1794 (source of synonymy)
Eosiren Andrews, 1902 † (current name source)
Eosiren Andrews, 1902 † (verified source for family)
Eotherium Owen, 1875 † accepted as Eotheroides Palmer, 1899 † (extant flag source)
Eotherium Owen, 1875 † accepted as Eotheroides Palmer, 1899 † (source of synonymy)
Eotherium Owen, 1875 † accepted as Eotheroides Palmer, 1899 † (verified source for family)
Eotheroides Palmer, 1899 † (verified source for family)
Eotheroides Palmer, 1899 † (current name source)
Felsinotherium Capellini, 1865 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Felsinotherium Capellini, 1872 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Felsinotherium Capellini, 1872 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Felsinotherium Capellini, 1865 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Fucotherium Kaup, 1840 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Fucotherium Kaup, 1840 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Furcotherium Simpson, 1932 † accepted as Metaxytherium Christol, 1840 † (name verified source)
Furcotherium Simpson, 1932 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Furcotherium Simpson, 1932 † accepted as Metaxytherium Christol, 1840 † (basis of record)
Halianassa Studer, 1887 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Halianassa Meyer, 1838 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Halianassa Studer, 1887 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Halianassa Meyer, 1838 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Halibutherium Gloger, 1841 † accepted as Halitherium Kaup, 1838 † (verified source for family)
Halibutherium Gloger, 1841 † accepted as Halitherium Kaup, 1838 † (source of synonymy)
Halicora Fleming, 1822 accepted as Dugong Lacépède, 1799 (verified source for family)
Halitherium Kaup, 1838 † (verified source for family)
Halitherium Kaup, 1838 † (current name source)
Halysiren Kretzoi, 1941 † accepted as Metaxytherium Christol, 1840 † (basis of record)
Halysiren Kretzoi, 1941 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Halysiren Kretzoi, 1941 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Halysiren Kretzoi, 1941 † accepted as Metaxytherium Christol, 1840 † (name verified source)
Halytherium Kaup, 1838 † accepted as Halitherium Kaup, 1838 † (verified source for family)
Halytherium Kaup, 1838 † accepted as Halitherium Kaup, 1838 † (source of synonymy)
Haplosiren Kretzoi, 1951 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Haplosiren Kretzoi, 1951 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Hesperosiren Simpson, 1932 † accepted as Metaxytherium Christol, 1840 † (verified source for family)
Hesperosiren Simpson, 1932 † accepted as Metaxytherium Christol, 1840 † (source of synonymy)
Indosiren von Königswald, 1952 † (verified source for family)
Indosiren von Königswald, 1952 † (current name source)
Kronokotherium Pronina, 1957 † (current name source)
Kronokotherium Pronina, 1957 † (verified source for family)
Manatherium Hartlaub, 1886 † accepted as Halitherium Kaup, 1838 † (verified source for family)
Manatherium Hartlaub, 1886 † accepted as Halitherium Kaup, 1838 † (source of synonymy)
Manati Steller, 1774 accepted as Hydrodamalis Retzius, 1794 (verified source for family)
Manati Steller, 1774 accepted as Hydrodamalis Retzius, 1794 (source of synonymy)
Masrisiren Kretzoi, 1941 † accepted as Eotheroides Palmer, 1899 † (source of synonymy)
Masrisiren Kretzoi, 1941 † accepted as Eotheroides Palmer, 1899 † (name verified source)
Masrisiren Kretzoi, 1941 † accepted as Eotheroides Palmer, 1899 † (verified source for family)
Masrisiren Kretzoi, 1941 † accepted as Eotheroides Palmer, 1899 † (extant flag source)
Masrisiren Kretzoi, 1941 † accepted as Eotheroides Palmer, 1899 † (basis of record)
Mesosiren Abel, 1906 † (verified source for family)
Mesosiren Abel, 1906 † (basis of record)
Mesosiren Abel, 1906 † (name verified source)