Classification of Osborn 1918

G. †Mastodon Cuvier 1817
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Fm. Equidae Gray 1821 [horse]
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G. †Hypohippus Leidy 1858
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Hypohippus affinis Leidy 1858
Hypohippus equinus Scott 1893
Hypohippus nevadensis Merriam 1913
Hypohippus osborni Gidley 1907
Invalid names: Hypohippus (Drymohippus) Merriam 1913 [invalid subgroup]
G. †Miohippus Marsh 1874
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Miohippus acutidens Sinclair 1905
Miohippus anceps Marsh 1874
Miohippus annectens Marsh 1874
Miohippus brachystylus Osborn 1904
Miohippus crassicuspis Osborn 1904
Miohippus equiceps Cope 1878
Miohippus equinanus Osborn 1918
Miohippus gemmarosae Osborn 1918
Miohippus gidleyi Osborn 1904
Miohippus intermedius Osborn and Wortman 1895
Miohippus meteulophus Osborn 1904
Miohippus primus Osborn 1918
Miohippus quartus Osborn 1918
Miohippus validus Osborn 1904
Invalid names: Miohippus condoni Leidy 1870 [nomen dubium]
Invalid names: Hippodon Leidy 1854 [nomen nudum], Hippodon speciosus Leidy 1854 [nomen nudum]
G. †Anchitherium von Meyer 1844
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Invalid names: Anchitherium longicristis Cope 1878 [nomen dubium], Mesohippus exoletus Cope 1874 [nomen dubium]
G. †Archaeohippus Gidley 1906
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Archaeohippus mourningi Merriam 1913
G. †Hipparion de Christol 1832
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Hipparion affine Leidy 1869
Hipparion anthonyi Merriam 1916
Hipparion coloradense Osborn 1918
Hipparion condoni Merriam 1915
Hipparion dolichops Gidley 1906
Hipparion gidleyi Merriam 1915
Hipparion gratum Leidy 1869
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Hipparion ingenuum Leidy 1885
Hipparion lenticulare Cope 1893
Hipparion leptode Merriam 1915
Hipparion minor Sellards 1916
Hipparion mohavense Merriam 1913
Hipparion molle Merriam 1915
Hipparion montezuma Leidy 1882
Hipparion occidentale Leidy 1856
Hipparion platystyle Merriam 1915
Hipparion plicatile Leidy 1887
Hipparion rectidens Cope 1886
Hipparion sinclairi Wortman 1882
Hipparion venustum Leidy 1853
Hipparion whitneyi Gidley 1903
Invalid names: Hipparion eurystyle Cope 1893 [nomen dubium], Hipparitherium Christol 1847 [synonym], Hippotherium Kaup 1832 [synonym], Neohipparion Gidley 1903 [synonym]
G. †Kalobatippus Osborn 1915
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Kalobatippus agatensis Osborn 1918
Kalobatippus gracilis Marsh 1892
G. †Megahippus McGrew 1938
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Megahippus matthewi Barbour 1914
G. †Merychippus Leidy 1856
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Merychippus californicus Merriam 1915
Merychippus campestris Gidley 1907
Merychippus eohipparion Osborn 1918
Merychippus eoplacidus Osborn 1918
Merychippus insignis Leidy 1856
Merychippus intermontanus Merriam 1915
Merychippus labrosus Cope 1874
Merychippus missouriensis Douglass 1908
Merychippus paniensis Cope 1874
Merychippus patruus Osborn 1918
Merychippus proparvulus Osborn 1918
Merychippus relictus Cope 1889
Merychippus republicanus Osborn 1918
Merychippus sejunctus Cope 1874
Merychippus seversus Cope 1878
Merychippus sphenodus Cope 1889
Merychippus sumani Merriam 1915
Invalid names: Merychippus stylodus Merriam 1915 [nomen nudum], Stylonus Cope 1878 [synonym]
G. †Mesohippus Marsh 1875
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Mesohippus bairdii Leidy 1850
Mesohippus celer Marsh 1874
Mesohippus eulophus Osborn 1904
Mesohippus hypostylus Osborn 1904
Mesohippus latidens Douglass 1903
Mesohippus montanensis Osborn 1904
Mesohippus obliquidens Osborn 1904
Mesohippus planidens Lambe 1905
Mesohippus portentus Douglass 1908
Mesohippus propinquus Lambe 1905
Mesohippus proteulophus Osborn 1904
Mesohippus stenolophus Lambe 1905
Mesohippus trigonostylus Osborn 1918
Mesohippus westoni Cope 1889
Invalid names: Mesohippus cuneatus Cope 1873 [nomen dubium]
G. †Parahippus Leidy 1858
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Parahippus agrestis Leidy 1873
Parahippus australis Leidy 1873
Parahippus avus Marsh 1874
Parahippus brevidens Marsh 1874
Parahippus cognatus Leidy 1858
Parahippus crenidens Scott 1893
Parahippus leonensis Sellards 1916
Parahippus minimus Douglass 1899
Parahippus nebrascensis Peterson 1907
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Parahippus pawniensis Gidley 1907
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Parahippus pristinus Osborn 1918
Parahippus taxus Douglass 1908
Parahippus texanus Leidy 1868
Parahippus tyleri Loomis 1908
Invalid names: Altippus Douglass 1908 [synonym], Anchippus Leidy 1868 [synonym], Desmatippus Scott 1893 [synonym]
G. †Pliohippus Marsh 1874
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Pliohippus coalingensis Merriam 1914
Pliohippus cumminsii Cope 1893
Pliohippus fairbanksi Merriam 1915
Pliohippus fossulatus Cope 1893
Pliohippus leidyanus Osborn 1918
Pliohippus lullianus Troxell 1916
Pliohippus minutus Cope 1893
Pliohippus mirabilis Leidy 1858
Pliohippus nobilis Osborn 1918
Pliohippus pernix Marsh 1874
Pliohippus phlegon Hay 1899
Pliohippus proversus Merriam 1916
Pliohippus robustus Marsh 1874
Pliohippus spectans Cope 1880
Pliohippus supremus Leidy 1869
Pliohippus tantalus Merriam 1913
G. †Protohippus Leidy 1858
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Protohippus castilli Cope 1886
Protohippus niobrarensis Gidley 1906
Protohippus pachyops Cope 1893
Protohippus parvulus Marsh 1868
Protohippus perditus Leidy 1858
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Protohippus placidus Leidy 1869
Protohippus profectus Cope 1889
Protohippus proplacidus Osborn 1918
Protohippus retrusus Cope 1889
Protohippus simus Gidley 1906
Protohippus tehonensis Merriam 1915
G. †Colodon Marsh 1890
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Colodon copei Osborn and Wortman 1895
G. †Rhynchotherium Falconer 1868
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Invalid names: Dibelodon Cope 1884 [synonym]
G. †Tetralophodon Falconer 1857
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Invalid names: Rhabdobunus Hay 1914 [synonym]
Equus fraternus Leidy 1858
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Invalid names: Hippotherium princeps Leidy 1890 [synonym]
G. †Euelephas
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Euelephas columbi Falconer 1857 [Columbian mammoth]
Euelephas imperator Leidy 1858 [imperial mammoth]
Euelephas meridionalis Nesti 1825
Invalid names: Archidiskodon Pohling 1888 [synonym]
G. †Trilophodon Falconer 1857
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Trilophodon lulli Barbour 1914
Trilophodon morrilli Barbour 1914
Invalid names: Eubelodon Barbour 1914 [synonym]