Classification of the family Halitheriidae

Subfm. †Halitheriinae Gill 1872
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G. †Eosiren Andrews 1902
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†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
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†Metaxytherium albifontanum Velez-Juarbe and Domning 2014
†Metaxytherium aquitaniae Pilleri 1987
†Metaxytherium arctodites Aranda-Manteca et al. 1994
†Metaxytherium crataegense Simpson 1932
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Invalid names: Metaxytherium calvertense Kellogg 1966 [synonym]
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Invalid names: Felsinotherium ossivallense Simpson 1932 [synonym]
†Metaxytherium krahuletzi Depéret 1895
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Invalid names: Halianassa studeri Meyer 1837 [synonym], Metaxytherium argoviense Pilleri 1987 [synonym], Metaxytherium christoli Fitzinger 1899 [synonym], Metaxytherium krahuletzi excelsum Pilleri 1987 [invalid subgroup]
†Metaxytherium lovisati Capellini 1886
†Metaxytherium medium Desmarest 1822
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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 serresii Gervais 1847
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Invalid names: Halitherium minor Cope 1883 [synonym]
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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
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†Prototherium ausetanum Balaguer and Alba 2016
†Prototherium intermedium Bizzotto 1983
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Invalid names: Prototherium montserratense Pilleri et al. 1989 [synonym], Prototherium solei Pilleri et al. 1989 [synonym]
†Prototherium veronense de Zigno 1875
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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]
G. †Stegosiren Domning and Beatty 2019
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†Stegosiren macei Domning and Beatty 2019
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]