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Tethytheria
Taxonomy
Tethytheria was named by McKenna (1975) [McKenna calls this a "Mirorder"]. It is extant.
It was reranked as the order Tethytheria by Prothero and Schoch (1989).
It was assigned to Ungulata by McKenna (1975); to Altungulata by Prothero and Schoch (1989); to Uranotheria by Shoshani and Tassy (2005); to Mammalia by Domning (1996) and Bajpai et al. (2010); to Paenungulata by Waddell et al. (2001), Rose et al. (2006), Seiffert (2007) and Asher and Helgen (2010); and to Afrotheria by Voss et al. (2016), Voss et al. (2017), Voss and Hampe (2017), Díaz-Berenguer et al. (2018) and Voss et al. (2023).
It was reranked as the order Tethytheria by Prothero and Schoch (1989).
It was assigned to Ungulata by McKenna (1975); to Altungulata by Prothero and Schoch (1989); to Uranotheria by Shoshani and Tassy (2005); to Mammalia by Domning (1996) and Bajpai et al. (2010); to Paenungulata by Waddell et al. (2001), Rose et al. (2006), Seiffert (2007) and Asher and Helgen (2010); and to Afrotheria by Voss et al. (2016), Voss et al. (2017), Voss and Hampe (2017), Díaz-Berenguer et al. (2018) and Voss et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Tethytheria McKenna p. 42 |
| 1989 | Tethytheria Prothero and Schoch p. 530 |
| 1996 | Tethytheria Domning p. 378 |
| 2001 | Tethytheria Waddell et al. p. 148 |
| 2005 | Tethytheria Shoshani and Tassy p. 9 figs. Table 2 |
| 2006 | Tethytheria Rose et al. p. 220 |
| 2007 | Tethytheria Seiffert |
| 2010 | Tethytheria Asher and Helgen p. 3 |
| 2010 | Tethytheria Bajpai et al. p. 42 |
| 2016 | Tethytheria Voss et al. p. 6 |
| 2017 | Tethytheria Voss and Hampe p. 340 |
| 2017 | Tethytheria Voss et al. p. 165 |
| 2018 | Tethytheria Díaz-Berenguer et al. p. 3 |
| 2023 | Tethytheria Voss et al. p. 137 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Unr. Tethytheria McKenna 1975
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Or. †Embrithopoda
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Fm. †Arsinoitheriidae Andrews 1904
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G. †Arsinoitherium Beadnell 1902
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†Arsinoitherium giganteum Sanders et al. 2004
†Arsinoitherium zitelli Beadnell 1902
†Arsinoitherium zitteli Beadnell 1902
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Invalid names: Arsinoitherium andrewsi Lankester 1903 [synonym]
Subfm. †Palaeoamasiinae Sen and Heintz 1979
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G. †Crivadiatherium Radulesco et al. 1976
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†Crivadiatherium iliescui Radulesco and Sudre 1985
†Crivadiatherium mackennai Radulesco et al. 1976
G. †Stylolophus Gheerbrant et al. 2018
+
†Stylolophus major Gheerbrant et al. 2021
†Stylolophus minor Gheerbrant et al. 2018
Invalid names: Stylolophidae Gheerbrant et al. 2021 [empty]
Or. Proboscidea Illiger 1811 [proboscidean]
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Subor. †Barytherioidea Andrews 1906
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Fm. †Barytheriidae
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Fm. †Numidotheriidae Shoshani and Tassy 1996
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G. †Numidotherium Jaeger 1986
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†Numidotherium koholense Mahboubi et al. 1986
†Numidotherium savagei Court 1995
Fm. †Choerolophodontidae Gaziry 1976
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G. †Afrochoerodon Picford 2001
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†Afrochoerodon kisumuensis Picford 2001
†Afrochoerodon zaltaniensis Pickford 2001
G. †Choerolophodon Schlesinger 1917
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†Choerolophodon anatolicus Ozansoy 1965
†Choerolophodon chioticus Tobien 1980
†Choerolophodon pentelici Gaudry and Lartet 1856
Superfm. †Deinotherioidea Osborn 1936
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Fm. †Deinotheriidae Bonaparte 1845 [deinothere]
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Subfm. †Deinotheriinae Bonaparte 1845
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G. †Prodeinotherium Ehik 1930
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†Prodeinotherium bavaricum von Meyer 1831
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Invalid names: Dinotherium secundarium Lartet 1836 [synonym], Prodeinotherium cuvieri Kaup 1832 [synonym], Prodeinotherium hungaricum Ehik 1930 [synonym]
†Prodeinotherium hobleyi Andrews 1911
†Prodeinotherium orlovii Sahni and Tripathi 1957
†Prodeinotherium pentapotamiae Falconer and Lydekker 1876
Invalid names: Dinotheriina Bonaparte 1850 [invalid subgroup]
Subor. Elephantiformes Tassy 1988
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Superfm. Elephantoidea Gray 1821
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Fm. Elephantidae Gray 1821 [elephant]
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Subfm. Elephantinae Gray 1821
G. †Emmenodon Cope 1889
G. †Selenetherium Mackaye et al. 2005
G. †Stegodibelodon Coppens 1972
G. †Stegodon Falconer 1857
G. †Stegotetrabelodon Petrocchi 1941
Invalid names: Stegodontinae Osborn 1918 [empty], Stegotetrabelodontinae Aguirre 1969 [empty], Suina Gray 1825 [empty]
G. †Paratetralophodon Tassy 1983
Invalid names: Loxodontinae Osborn 1921 [empty], Mammontinae Osborn 1921 [empty], Mammutoidea [empty]
G. †Hemimastodon Pilgrim 1912
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†Hemimastodon annectens Matsumoto 1924
†Tetrabelodon (Hemimastodon) crepusculi Pilgrim 1908
Fm. †Palaeomastodontidae Andrews 1906
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G. †Palaeomastodon Andrews 1901
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†Palaeomastodon beadnelli Andrews 1901
†Palaeomastodon minor Andrews 1904
†Palaeomastodon parvus Andrews 1905
†Palaeomastodon wintoni Andrews 1905
Invalid names: Phiomiidae Kalandadze and Rautian 1992 [empty]
Unr. Elephantimorpha Tassy and Shoshani 1997
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G. †Eritreaum Shoshani et al. 2006
Fm. †Mammutidae Hay 1922 [mastodon]
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G. †Eozygodon Tassy and Pickford 1983
G. †Mammut Blumenbach 1799 [mastodon]
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†Mammut americanum Kerr 1792 [American mastodon]
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Invalid names: Elephas americanus De Kay 1842 [synonym], Mammut ohioticum Blumenbach 1797 [synonym], Mammut progenium Hay 1914 [synonym], Mastodon giganteum Cuvier 1817 [synonym], Pliomastodon adamsi Hibbard 1944 [synonym], Tapirus mastodontoides Harlan 1825 [synonym], Tetracaulodon mastodontoideum Godman 1830 [synonym]
†Mammut borsoni Hays 1834
†Mammut cosoensis Schultz 1937
†Mammut floridanum Leidy 1886
†Mammut furlongi Shotwell and Russell 1963
†Mammut matthewi Osborn 1921
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Invalid names: Mammut nevadanus [synonym], Pliomastodon sellardsi Simpson 1930 [synonym], Pliomastodon vexillarius Matthew 1930 [synonym]
†Mammut pacificus Dooley et al. 2019
Invalid names: Leviathan Koch 1841 [synonym], Mastodon Cuvier 1817 [synonym], Missourium Koch 1840 [synonym], Pliomastodon Osborn 1926 [synonym], Tetracaulodon Godman 1830 [synonym]
G. †Zygolophodon Vacek 1877
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†Zygolophodon aegyptensis Sanders and Miller 2002
†Zygolophodon morotoensis Pickford and Tassy 1980
†Zygolophodon proavus Cope 1873
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Invalid names: Mastodon brevidens Cope 1889 [synonym], Mastodon merriami Osborn 1921 [synonym]
†Zygolophodon tapiroides Cuvier 1824
†Zygolophodon turicensis Schintz 1824
Invalid names: Miomastodon Osborn 1922 [synonym], Turicius Osborn 1926 [synonym]
Invalid names: Eozygodontinae McKenna and Bell 1997 [empty], Mammutinae Hay 1922 [empty]
Invalid names: Mammutida Tassy and Shoshani 1997 [empty]
Fm. †Gomphotheriidae Hay 1922 [gomphothere]
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G. †Amahuacatherium Romero-Pittman 1996
Subfm. †Amebelodontinae Barbour 1927
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G. †Amebelodon Barbour 1927
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Subg. †Amebelodon (Amebelodon) Barbour 1927
†Amebelodon floridanus Leidy 1886
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Invalid names: Amebelodon sinclairi Barbour 1930 [synonym], Trilophodon hicksi Cook 1922 [synonym], Trilophodon leidii Frick 1926 [synonym], Trilophodon paladentatus Cook 1922 [synonym]
†Amebelodon fricki Barbour 1927
†Amebelodon grandincisivus Schlesinger 1917
†Amebelodon joraki Frick 1933
G. †Archaeobelodon Tassy 1984
G. †Platybelodon Borissiak 1928
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†Platybelodon barnumbrowni Barbour 1931
†Platybelodon dangheesis Wang and Qiu 2002
†Platybelodon danovi Borissiak 1928
†Platybelodon grangeri Osborn 1929
†Platybelodon loomisi Barbour 1929
Subfm. †Anancinae Hay 1922
+
G. †Anancus Aymard 1855
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†Anancus arvernensis Croizet and Jobert 1828
†Anancus bensonensis Gidley 1926
†Anancus brazosius Hay 1923
†Anancus capensis Sanders 2007
†Anancus defloccatus Hay 1926
†Anancus kazachstanensis Auberkerova 1974
†Anancus lehmanni Gaziry 1997
†Anancus orarius Hay 1926
†Anancus perimensis Falconer and Cautley 1847
†Anancus petrocchii Coppens 1965
†Anancus sinensis Hopwood 1935
†Anancus sivalensis Cautley 1836
Invalid names: Brevirostrinae Osborn 1923 [synonym]
Subfm. †Cuvieroniinae Cabrera 1929
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G. †Notiomastodon Cabrera 1929
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†Notiomastodon platensis Ameghino 1888
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Invalid names: Amahuacatherium peruvium Romero-Pittman 1996 [synonym], Haplomastodon chimborazi Proaño 1922 [synonym], Mastodon bonaerensis Moreno 1888 [synonym], Notiomastodon ornatus Cabrera 1929 [synonym], Stegomastodon superbus Ameghino 1888 [synonym], Stegomastodon waringi Holland 1920 [synonym]
Invalid names: Haplomastodon Hoffstetter 1950 [synonym]
G. †Cuvieronius Osborn 1923
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†Cuvieronius arellanoi Ochoterena and Silva 1970
†Cuvieronius hyodon Fischer 1814
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Invalid names: Mastodon bolivianus Philippi 1893 [synonym], Mastodon humboldtii Cuvier 1805 [synonym]
†Cuvieronius priestleyi Hay and Cook 1930
†Cuvieronius tropicus Cope 1884
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Invalid names: Cordillerion defloccatus Hay 1926 [synonym], Cordillerion orarius Hay 1926 [synonym], Mastodon oligobunis Cope 1893 [synonym]
Invalid names: Cordillerion Osborn 1926 [synonym], Cuvieronius tarijensis Cabrera 1929 [nomen nudum]
Subfm. †Gomphotheriinae Hay 1922
+
Tr. †Amebelodontini Barbour 1927
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Invalid names: Amebelodontina McKenna and Bell 1997 [empty], Protanancina McKenna and Bell 1997 [empty]
Invalid names: Gnathabelodontinae Barbour and Sternberg 1935 [synonym], Gomphotheriini Hay 1922 [empty]
G. †Gomphotherium Burmeister 1837
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†Gomphotherium anguirvalis Osborn 1926
†Gomphotherium angustidens Burmeister 1837
†Gomphotherium brewsterensis Osborn 1926
†Gomphotherium connexus Hopwood 1935
†Gomphotherium emmonsi Hay 1930
†Gomphotherium gratum Hay 1916
†Gomphotherium nebrascensis Osborn 1924
†Gomphotherium ngorora Maglio 1974
†Gomphotherium productum Cope 1874
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Invalid names: Gomphotherium pojoaquense Frick 1926 [synonym], Mastodon serridens Cope 1884 [synonym], Megabelodon minor Mawby 1968 [synonym], Ocalientinus ojocaliensis Frick 1933 [synonym], Tetrabelodon lulli Barbour 1914 [synonym], Trilophodon cruziensis Frick 1933 [synonym], Trilophodon joraki Frick 1933 [synonym], Trilophodon phippsi Cook 1928 [synonym]
†Gomphotherium pygmaeus Depéret 1897
†Gomphotherium rugosidens Leidy 1890
†Gomphotherium shensiensis Chang and Zhai 1978
†Gomphotherium simplicidens Osborn 1923
†Gomphotherium wimani Hopwood 1935
Invalid names: Genomastodon Barbour 1917 [synonym], Ocalientinus Frick 1933 [synonym], Serridentinus Osborn 1923 [synonym], Tatabelodon Frick 1933 [synonym], Tetrabelodon Cope 1884 [synonym], Trilophodon Falconer 1857 [synonym], Trobelodon Frick 1933 [synonym]
G. †Konobelodon Lambert 1990
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†Amebelodon (Konobelodon) cyrenaicus Lambert 1990
†Konobelodon atticus Wagner 1857
†Konobelodon britti Lambert 1990
G. †Mastotherium Fischer 1814
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G. †Megabelodon Barbour 1914
G. †Pediolophodon Lambert 2007
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†Pediolophodon campester Cope 1877
†Pediolophodon fricki Osborn 1936
Subfm. †Rhynchotheriinae Hay 1922
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Invalid names: Cuvieroniini Cabrera 1929 [empty], Rhynchorostrinae Osborn 1923 [synonym], Rhynchotheriini Hay 1922 [empty]
G. †Rhynchotherium Falconer 1868
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†Rhynchotherium anguirvale Osborn 1926
†Rhynchotherium euhyphodon Cope 1884
†Rhynchotherium falconeri Osborn 1923
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Invalid names: Rhynchotherium browni Osborn 1936 [synonym], Trilophodon edensis Frick 1921 [synonym]
†Rhynchotherium francisi Hay 1926
†Rhynchotherium praecursor Cope 1893
†Rhynchotherium simpsoni Olsen 1957
Invalid names: Aybelodon Frick 1933 [synonym], Blickotherium Frick 1933 [synonym], Dibelodon Cope 1884 [synonym]
G. †Sinomastodon Tobien et al. 1986
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†Sinomastodon bumiajuensis van der Maarel 1932
†Sinomastodon yangziensis Wang et al. 2014
G. †Stegomastodon Pohlig 1912
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†Stegomastodon aftoniae Osborn 1924
†Stegomastodon brasiliensis Lund 1839
†Stegomastodon chapmani Osborn 1924
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Invalid names: Mastodon chapmani Hays 1834 [objective synonym]
†Stegomastodon mirificus Leidy 1858
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Invalid names: Mastodon successor Cope 1892 [synonym], Stegomastodon arizonae Gidley 1926 [synonym], Stegomastodon rexroadensis Woodburne 1961 [synonym], Stegomastodon texanus Osborn 1924 [synonym]
†Stegomastodon nebrascensis Osborn 1924
†Stegomastodon primitivus Osborn 1936
Invalid names: Rhabdobunus Hay 1914 [synonym]
G. †Synconolophus Osborn 1929
G. †Tetralophodon Falconer 1857
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Subg. †Tetralophodon (Tetralophodon) Falconer 1857
†Tetralophodon elegans Hay 1916
†Tetralophodon longirostris Kaup 1832
†Tetralophodon precampester Osborn 1923
G. †Torynobelodon Barbour 1929
†Trilophodon (Tetrabelodon) shepardi edensis Frick 1921
Invalid names: Mastodon shepardii Leidy 1870 [nomen dubium], Rhynchotherium rectidens Osborn 1923 [nomen dubium]
Subor. †Mastodontoidea Osborn 1921
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Fm. †Bunomastodontidae Osborn 1921
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Invalid names: Longirostrinae [empty], Serridentinae Osborn 1936 [empty], Tetralophodontinae van der Maarel 1932 [empty]
Superfm. †Moeritherioidea Osborn 1921
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Fm. †Moeritheriidae Andrews 1906
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G. †Moeritherium Andrews 1901
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†Moeritherium chehbeurameuri Delmer et al. 2006
†Moeritherium gracile Andrews 1902
†Moeritherium lyonsi Andrews 1901
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Invalid names: Moeritherium ancestrale Petronievics 1923 [synonym]
†Moeritherium trigonodon Andrews 1904
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Invalid names: Moeritherium andrewsi Schlosser 1911 [synonym]
Invalid names: Moeritherium latidens Deraniyagala 1955 [nomen dubium], Moeritherium pharaonensis Deraniyagala 1955 [nomen dubium]
G. †Neodesmostylus Khomenko 1928
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†Neodesmostylus primigenius Khomenko 1928
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Invalid names: Desmostylus wollosowitschi Pfizenmayer 1927 [objective synonym]
G. †Phiomia Andrews and Beadnell 1902
+
†Phiomia major Sanders et al. 2004
†Phiomia serridens Andrews and Beadnell 1902
Invalid names: Caenobasileus Cope 1877 [nomen vanum], Caenobasileus tremontigerus Cope 1877 [nomen vanum], Dinotherioidea Osborn 1921 [empty], Euelephantoidea [empty], Hemimastodontidae McKenna and Bell 1997 [empty], Mastodontidae Gray 1821 [empty]
Or. Sirenia Illiger 1811 [sirenian]
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Fm. Dugongidae Gray 1821 [dugong]
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Subfm. Dugonginae Gray 1821
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G. †Bharatisiren Bajpai and Domning 1997
+
†Bharatisiren indica Bajpai et al. 2006
†Bharatisiren kachchhensis Bajpai et al. 1987
G. †Callistosiren Velez-Juarbe and Domning 2015
+
†Callistosiren boriquensis Velez-Juarbe and Domning 2015
G. †Dioplotherium Cope 1883
+
†Dioplotherium allisoni Kilmer 1965
†Dioplotherium manigaulti Cope 1883
G. Dugong Lacépède 1799 [dugong]
+
Dugong dugon Illiger 1811 [dugong]
+
Invalid names: Dugong indicus Lacépède 1799 [synonym], Halicore australis Owen 1847 [synonym], Halicore cetacea Heuglin 1877 [synonym], Halicore hemprichii Ehrenberg 1832 [synonym], Halicore lottum Ehrenberg 1832 [synonym], Halicore tabernaculi Ruppell 1843 [synonym], Trichechus dugung Erxleben 1777 [synonym]
Invalid names: Amblychilus Fischer von Waldheim 1814 [synonym], Dugongidus Gray 1821 [synonym], Dugungus Tiedemann 1808 [synonym], Halicora Fleming 1822 [synonym], Halicore [synonym], Platystomus Fischer von Waldheim 1803 [synonym]
G. †Kutchisiren Bajpai et al. 2010
+
†Kutchisiren cylindrica Bajpai et al. 2010
+
Invalid names: Kotadasiren gracillis Das and Basu 1994 [replaced]
Invalid names: Kotadasiren Das and Basu 1994 [nomen nudum]
G. †Rytiodus Lartet 1866
+
†Rytiodus heali Domning 2011
Invalid names: Thelriope Pilleri 1987 [objective synonym]
Invalid names: Halicorinae Abel 1913 [synonym], Rhytiodinae Abel 1914 [synonym], Rytiodontinae Kretzoi 1941 [synonym], Thelriopiinae Pilleri 1987 [synonym]
G. †Eotheroides Palmer 1899
+
†Eotheroides aegyptiacum Owen 1875
+
Invalid names: Eotherium majus Zdansky 1938 [synonym], Manatus coulombi Filhol 1878 [synonym], Masrisiren abeli Kretzoi 1941 [synonym]
†Eotheroides babiae Bajpai et al. 2006
†Eotheroides clavigerum Zalmout and Gingerich 2012
†Eotheroides lambondrano Samonds and Zalmout 2009
†Eotheroides sandersi Zalmout and Gingerich 2012
†Eotheroides waghapadarensis Das and Basu 1994
Invalid names: Eotherium Owen 1875 [synonym], Masrisiren Kretzoi 1941 [synonym]
Subfm. †Halitheriinae Gill 1872
+
G. †Eosiren Andrews 1902
+
†Eosiren abeli Sickenberg 1934
†Eosiren imenti Domning et al. 1994
†Eosiren libyca Andrews 1902
†Eosiren stromeri Abel 1913
Invalid names: Archaeosiren Abel 1913 [synonym]
G. †Metaxytherium de Christol 1840
+
†Metaxytherium albifontanum Velez-Juarbe and Domning 2014
†Metaxytherium aquitaniae Pilleri 1987
†Metaxytherium arctodites Aranda-Manteca et al. 1994
†Metaxytherium crataegense Simpson 1932
+
Invalid names: Metaxytherium calvertense Kellogg 1966 [synonym]
†Metaxytherium floridanum Hay 1922
+
Invalid names: Felsinotherium ossivallense Simpson 1932 [synonym]
†Metaxytherium krahuletzi Depéret 1895
+
Invalid names: Halianassa studeri Meyer 1837 [synonym], Metaxytherium argoviense Pilleri 1987 [synonym], Metaxytherium christoli Fitzinger 1899 [synonym]
†Metaxytherium lovisati Capellini 1886
†Metaxytherium medium Desmarest 1822
+
Invalid names: Halitherium cuvieri de Christol 1832 [synonym], Haplosiren leganyii Kretzoi 1951 [synonym], Hippopotamus intermedius Holl 1829 [synonym], Manatus fossilis Holl 1829 [synonym], Metaxytherium catalaunicum Pilleri et al. 1989 [synonym], Metaxytherium cordieri de Christol in de Blainville 1844 [synonym], Metaxytherium petersi Abel 1904 [synonym]
†Metaxytherium riveroi Varona 1972
†Metaxytherium subapenninum Bruno 1839
+
Invalid names: Cheirotherium brochii de Blainville 1844 [synonym], Felsinotherium forestii Capellini 1872 [synonym], Felsinotherium gastaldi de Zigno 1878 [synonym], Felsinotherium gervaisi Capellini 1872 [synonym], Felsinotherium subalpinum Isel 1910 [synonym]
Invalid names: Cheirotherium Bruno 1839 [synonym], Felsinotherium Capellini 1872 [synonym], Felsinotherium gunteri Simpson 1932 [nomen nudum], Fucotherium Kaup 1840 [synonym], Halianassa [synonym], Halysiren Kretzoi 1941 [synonym], Haplosiren Kretzoi 1951 [synonym], Hesperosiren Simpson 1932 [synonym], Metaxytherium beaumontii de Christol 1844 [nomen dubium], Metaxytherium meyeri Abel 1904 [nomen dubium], Pontotherium Kaup 1840 [synonym], Thalattosiren Sickenberg 1928 [synonym]
G. †Prototherium de Zigno 1887
+
†Prototherium ausetanum Balaguer and Alba 2016
†Prototherium intermedium Bizzotto 1983
+
Invalid names: Prototherium montserratense Pilleri et al. 1989 [synonym], Prototherium solei Pilleri et al. 1989 [synonym]
†Prototherium veronense de Zigno 1875
+
Invalid names: Halitherium angustifrons de Zigno 1875 [synonym], Halitherium curvidens de Zigno 1875 [synonym], Paraliosiren suessi Abel 1906 [synonym], Protosiren dolloi Abel 1904 [synonym]
Invalid names: Mesosiren Abel 1906 [synonym], Paraliosiren Abel 1906 [synonym]
Invalid names: Archaeosireninae Abel 1914 [synonym], Eotherioidinae Kretzoi 1941 [synonym], Halianassinae Reinhart 1959 [synonym], Halitherida Carus 1868 [objective synonym], Metaxytheriinae Kretzoi 1941 [synonym], Pachyspondylus Brandt 1873 [nomen vanum], Prototheriidae Kretzoi 1941 [invalid subgroup]
Subfm. †Hydrodamalinae Palmer 1895
+
G. †Dusisiren Domning 1978
+
†Dusisiren dewana Takahashi et al. 1986
†Dusisiren reinharti Domning 1978
†Dusisiren takasatensis Kobayashi et al. 1995
G. †Hydrodamalis Retzius 1794 [Steller's sea cow]
+
†Hydrodamalis cuestae Domning 1978 [Cuesta sea cow]
+
Invalid names: Hydrodamalis spissa Furusawa 1988 [synonym]
†Hydrodamalis gigas Zimmermann 1780 [Steller's sea cow]
+
Invalid names: Hydrodamalis stelleri Retzius 1794 [synonym], Manati balaenurus Boddaert 1785 [synonym], Rhytina borealis Brandt 1849 [synonym], Rhytina stellerus Brandt 1849 [synonym], Rytina cetacea Illiger 1815 [synonym]
Invalid names: Dystomus Fischer von Waldheim 1813 [synonym], Haligyna Billberg 1827 [synonym], Manati Steller 1774 [replaced], Nepus Fischer von Waldheim 1814 [synonym], Rhytina Berthold 1827 [synonym], Rhytine Burmeister 1837 [objective synonym], Rytina Illiger 1811 [synonym], Sirene Link 1794 [synonym], Stellerus Desmarest 1822 [synonym]
Invalid names: Rhytinea Brandt 1846 [synonym], Rytinadae Gray 1843 [synonym], Rytineae Brandt 1833 [synonym], Rytinidae Girard 1852 [synonym]
G. †Indosiren von Koenigswald 1952
+
†Indosiren javanensis von Koenigswald 1952
†Indosiren koeningswaldi Sahni and Mishra 1975
G. †Kaupitherium Voss and Hampe 2017
+
†Kaupitherium bronni Krauss 1858
†Kaupitherium gruelli Voss and Hampe 2017
G. †Lentiarenium Voss et al. 2016
+
†Lentiarenium christolii Fitzinger 1842
+
Invalid names: Halitherium abeli Spillman 1959 [synonym], Metaxytherium pergense Toula 1899 [synonym]
G. †Nanosiren Domning and Aguilera 2008
+
†Nanosiren garciae Domning and Aguilera 2008
†Nanosiren sanchezi Domning and Aguilera 2008
G. †Priscosiren Velez-Juarbe and Domning 2014
+
†Priscosiren atlantica Velez-Juarbe and Domning 2014
Invalid names: Halicorida Brandt 1868 [synonym], Halicoridae Gray 1825 [synonym], Halicoroidea Gill 1872 [synonym], Halitherium Kaup 1838 [nomen dubium], Halitherium alleni Simpson 1932 [invalid subgroup], Halitherium antillense Matthew 1916 [nomen dubium], Halitherium taulannense Sagne 2001 [invalid subgroup], Rytiodinae Simpson 1932 [empty], Trachytherium Gervais 1849 [nomen dubium]
Fm. †Prorastomidae Cope 1889
+
G. †Prorastomus Owen 1855
+
†Prorastomus sirenoides Owen 1855
Invalid names: Prorastoma Lydekker 1892 [objective synonym]
Invalid names: Prorastomatidae Flower and Lydekker 1891 [objective synonym]
Fm. †Protosirenidae Sickenberg 1934
+
G. †Protosiren Abel 1904
+
†Protosiren eothene Zalmout et al. 2003
†Protosiren fraasi Abel 1904
†Protosiren minima Desmarest 1822
†Protosiren sattaensis Gingerich et al. 1995
†Protosiren smithae Domning and Gingerich 1994
Fm. Trichechidae Gray 1821 [manatee]
+
Subfm. †Miosireninae Abel 1919
+
Fm. Trichechinae Gray 1825
+
G. †Potamosiren Reinhart 1951
+
†Potamosiren magdalenensis Savage 1951
+
Invalid names: Metaxytherium ortegense Kellogg 1966 [synonym]
G. Trichechus Linnaeus 1758 [manatee]
+
†Trichechus hesperamazonicus Perini et al. 2020
Trichechus inunguis Natterer 1883 [Amazonian manatee]
Trichechus manatus Linnaeus 1758
+
Invalid names: Manatus americanus De Kay 1842 [synonym], Manatus australis Retzius 1794 [synonym], Manatus koellikeri Trouessart 1904 [synonym]
Trichechus senegalensis Link 1795 [West African manatee]
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Invalid names: Manatus senegalensis Desmarest 1817 [synonym]
Invalid names: Halipaedisca Gistel 1848 [synonym], Manatus Brunnich 1772 [synonym], Neodermus Rafinesque 1815 [synonym], Oxystomus Fischer von Waldheim 1803 [synonym]
Invalid names: Trichechina Bonaparte 1850 [empty]
Invalid names: Halicorea Brandt 1846 [synonym], Halicoreae Brandt 1833 [objective synonym], Manatida Brandt 1868 [objective synonym], Manatidae Gray 1821 [objective synonym], Manatoidea Gill 1872 [objective synonym], Manatus aequatorialis Lacépède 1799 [invalid subgroup], Manatus vulgaris Domning 1996 [invalid subgroup], Trichechoidea Gill 1872 [objective synonym]
Invalid names: Anthropocephala Billberg 1827 [objective synonym], Crassitherium Van Beneden 1871 [nomen dubium], Diopia Rafinesque 1815 [objective synonym], Dugongoidea Heal 1973 [empty], Halobioidea Ameghino 1889 [objective synonym], Herbivorae Gray 1821 [synonym], Manatherium Hartlaub 1886 [nomen dubium], Manatides Billberg 1827 [objective synonym], Manatina Bonaparte 1837 [objective synonym], Manatus inornatus Leidy 1873 [nomen dubium], Pugmeodon Kaup 1838 [nomen oblitum], Rhytinidae Gill 1872 [empty], Sireniformia Burmeister 1837 [objective synonym], Sirenotherium Paula Couto 1967 [nomen dubium], Sirenotherium pirabense Paula Couto 1967 [nomen dubium], Trichechiformes Hay 1923 [objective synonym]
Invalid names: Behemota McKenna and Bell 1997 [empty]
Diagnosis
No diagnoses are available