Classification of Osborn 1908

†Palaeosyops ultimus Matthew 1897
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G. †Ptolemaia Osborn 1908
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†Ptolemaia lyonsi Osborn 1908
Fm. †Brontotheridae Marsh 1873 [brontothere]
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G. †Mesatirhinus Osborn 1908
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†Mesatirhinus petersoni Osborn 1908
G. †Metarhinus Osborn 1908
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†Metarhinus diploconus Osborn 1895
†Metarhinus earlei Osborn 1908
†Metarhinus fluviatilis Osborn 1908
G. †Dolichorhinus Hatcher 1895
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†Dolichorhinus hyognathus Osborn 1889
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Invalid names: Telmatotherium cornutum Osborn 1895 [synonym]
G. †Eotitanops Osborn 1907
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†Eotitanops borealis Cope 1880
†Eotitanops brownianus Cope 1881
G. †Palaeosyops Leidy 1870
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†Palaeosyops copei Osborn 1908
†Palaeosyops grangeri Osborn 1908
†Palaeosyops leidyi Osborn 1908
G. †Telmatherium Marsh 1872
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†Telmatherium altidens Osborn 1908
†Telmatherium ultimum Osborn 1908
G. †Brontotherium Marsh 1873
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†Brontotherium hatcheri Osborn 1908
G. †Limnohyops Marsh 1890
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†Limnohyops matthewi Osborn 1908
†Limnohyops monoconus Osborn 1908
†Limnohyops priscus Osborn 1908
G. †Symborodon Cope 1873
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†Symborodon copei Osborn 1908
Subfm. †Diplacodontinae Osborn 1914
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G. †Diplacodon Marsh 1875
Subfm. †Manteoceratinae Osborn 1914
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G. †Manteoceras Hatcher 1895
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†Manteoceras washakiensis Osborn 1908
G. †Protitanotherium Osborn 1908
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