Mammalia Linnaeus, 1758
Achaenodontidae
Achtiaria Borissiak, 1914
Aglaocetidae
Agriochoeridae Leidy, 1869
Allocaenelaphus Radulesco & Samson, 1967
Amphimerycidae Stehlin, 1910
Amphiprox Haupt, 1935
Anoplotheriidae Gray, 1821
Anthracotheriidae Leidy, 1869
Antiacodontidae
Antilocapridae Gray, 1866
Apriculus Gazin, 1956
Aquascalientia Stevens, 1977
Astylolama Churcher, 1965
Awashia Vrba, 1997
Bakalovia Nikolov & Heissig, 1985
Barberahyus Golpe-Posse, 1977
Barbourochoerus Schultz & Falkenbach, 1968
Bifidipes Demathieu, Ginsburg, Guérin & Truc, 1984
Blickohyus Schultz & Falkenbach, 1968
Boreameryx
Bothriodontipus Casanovas-Cladellas & Santafe-Llopis, 1983
Bouria Vrba, 1997
Bovidae Gray, 1821
Brachyhyops Colbert, 1937
Brachyodon Lartet, 1868
Bugtimeryx Ginsburg, Morales & Soria, 2001
Bunomerycidae
Caenotheriidae
Cainotheriidae Cope, 1881
Camelidae Gray, 1821
Camelopardalidae
Candiacervus Kuss, 1975
Canthumerycidae
Cebochoeridae Lydekker
Cervicoprus Vialov, 1982
Cervidae Goldfuss, 1820
Choeropotamidae Owen, 1845
Climacoceratidae
Climacoceridae
Colombibos Camacho & Porta, 1960
Ctenocervus Kretzoi, 1968
Dacrytheriidae Deperet, 1917
Delahomeryx Stevens, 1969
Deprezia Geraads & Amani, 1998
Diacodexeidae
Dichobunidae Gill, 1872
Dichodontidae
Dicotylidae
Didymodon Blake, 1863
Diorocetidae
Discritochoerus
Dmanisibos Burchak-Abramovich & Vekua, 1994
Dolichodoryceros Kahlke, 1956
Dromomerycidae Frick, 1937
Ectopotamochoerus Leakey, 1965
Edocerus Avila-Pires, 1957
Elaphuroides Otsuka, 1972
Entelodontidae Lydekker, 1883
Entelodontipus Casanovas-Cladellas & Santafe-Llopis, 1983
Entolodontidae
Eobison Flerov, 1972
Eocenchoerus Liu, 2001
Eocoileus Webb, 2000
Eoentelodon Chow, 1958
Eomysticetidae Sanders & Barnes, 2002
Eordeus Stratigopoulos, 1986
Eschatiidae
Euraxis Di Stefano & Petronio, 1998
Eurodexis Erfurt & Sudre, 1996
Eurolistriodon Pickford & Moya Sola, 1995
Eurytheriidae
Euthyceros Athanassiou, 2002
Eygalayodon Sudre & Marandat, 1993
Gelocidae Schlosser, 1886
Gervachoerus Sudre, 1978
Giraffidae Gray, 1821
Gregoryochoerus Schultz & Falkenbach, 1968
Haplobunodontidae Pilgrim, 1941
Haqueina Dehm & Oettingen-Spielberg, 1958
Helladorcas Bouvrain, 1997
Helohyidae Marshall, 1877
Heterocemas
Heteroprox
Hidrosotherium Wilson, 1974
Hippopotamidae Gray, 1821
Hippopotamyidae
Hispanomerycidae
Homacodontidae Marsh, 1849
Hoplitomerycidae
Hoplitomeryx Leinders, 1984
Huaxiachoerus Liu, 2001
Hypertragulidae Cope, 1879
Indomeryx Pilgrim, 1928
Ioribus Vekua, 1972
Karsimatherium Meladze, 1962
Koufotragus de Bonis & Bouvrain, 1996
Krabitherium
Lagomerycidae Pilgrim, 1941
Leptobison Matsumoto & Mori, 1956
Leptochoeridae Marsh, 1894
Leptomerycidae Zittel, 1893
Lijiangocerus Li Youheng & Han Defen, 1978
Limeryx
Llanocetidae Mitchell, 1989
Lophiomerycidae
Lorancahyus Pickford & Morales, 1998
Majoreas Kostopoulos, 2004
Masillabune Tobien, 1980
Megabathygenys Schultz & Falkenbach, 1968
Megaceraxis Matsumoto, 1963
Megasepia Schultz & Falkenbach, 1968
Merychenia Barghoom, 1986
Merycoidodontidae Thorpe, 1923
Merycopotamidae
Metkatius Kumar & Sahni, 1985
Mixtotheriidae Pearson, 1927
Molarochoerus Liu & Pan, 2003
Moldoredunca Lungu, 1979
Morotochoerus Pickford, 1998
Moschidae Gray, 1821
Moschoedestes Stevens, Stevens & Dawson, 1969
Neoentelodon Aubekerova, 1969
Neomegaloceros Korotkevich, 1971
Nitidarcus Vrba, 1997
Nyanzameryx Thomas, 1984
Orangemeryx Morales, Soria & Pickford, 1999
Oromerycidae Gazin, 1955
Orthogonoceros Kahlke, 1956
Orthostonyx Leakey, 1958
Osbornohyus Schultz & Falkenbach, 1968
Oschinotherium Belyaeva, 1974
Otarohyus Schultz & Falkenbach, 1968
Pakicetidae Thewissen et al., 1996
Palaeochoeridae
Palaeomerycidae Lydekker, 1883
Palaeoodocoileus Spillmann, 1931
Parabathygenys Schultz & Falkenbach, 1968
Paraeporeodon Schultz & Falkenbach, 1968
Parahexacodus Erfurt & Sudre, 1996
Paraminiochoerus Schultz & Falkenbach, 1956
Parantidorcas Aramboug, 1979
Parastenopsochoerus Schultz & Falkenbach, 1956
Pegomylus Frick & Taylor, 1968
Pelocetidae
Phacochoeridae
Pliocervus Hilzheimer, 1922
Poebrotheriidae
Potamochoerops Ewer, 1956
Praepalaeotragus Godina, Vislobokova & Abdrachmanova, 1993
Praesinomegaceros Vislobokova, 1983
Praetragulus Vislobokova, 1998
Progenitohyus Ducrocq, Chaimanee, Suteethorn & Jaeger, 1997
Protoceratidae Marsh, 1891
Protolabididae
Pseudogenetochoerus Schultz & Falkenbach, 1968
Pseudostenopsochoerus Schultz & Falkenbach, 1956
Qatraniodon Ducrocq, 1997
Raoellidae Sahni, 1981
Raphenacodus
Robiatherium Sudre, 1988
Rohnia Castellanos, 1957
Sanitheriidae
Siamochoerus Ducrocq, Chaimanee, Suteethorn & Jaeger, 1998
Simocetidae Fordyce, 2002
Simpsonodus Krishtalka & Stucky, 1986
Sinapodorcas Bouvrain, Sen & Thomas, 1994
Sinapriculus Liu, Fortelius & Pickford, 2002
Smertiobos Duvernois, 1990
Sogdianotherium Sharapov, 1974
Spatuloceros Kretzoi, 1974
Sperrgebietomeryx Morales, Soria & Pickford, 1999
Suidae Gray, 1821
Tamanacles Vereshchagin, 1957
Tayassuidae Palmer, 1897
Texodon West, 1982
Thandaungia
Tragulidae Milne-Edwards, 1864
Tragulohyus Gervais, 1874
Triceromerycidae
Trigonolestidae
Tsaganohyus Kondrashov, Lopatin & Lucas, 2004
Turiacemas Azanza Asensio, 2000
Tuscomeryx Abbazzi, 2001
Vaalichoerus Kretzoi & Kretzoi, 2000
Xiphodontidae Flower, 1883
Yuorlovia Godina, 1979
Zhailimeryx Guo, Dawson & Beard, 2000