Classification of Scott 1940

G. †Elotherium Pomel 1847
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Or. Artiodactyla Owen 1848 [even-toed ungulate]
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Unr. Ruminantia Scopoli 1777 [ruminant]
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Subor. Tylopoda Illiger 1811
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Superfm. †Hypertraguloidea Scott 1940
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Fm. †Hypertragulidae Cope 1879
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Subfm. †Hypisodontinae
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G. †Hypisodus Cope 1873
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Hypisodus alacer Troxell 1920
Hypisodus minimus Cope 1873
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Invalid names: Hypisodus ringens Cope 1873 [synonym]
Subfm. †Leptomerycinae Zittel 1893
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G. †Heteromeryx Matthew 1905
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Heteromeryx dispar Matthew 1905
G. †Leptomeryx Leidy 1853
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Leptomeryx esulcatus Cope 1889
Leptomeryx evansi Leidy 1853
Leptomeryx speciosus Lambe 1908
Invalid names: Trimerodus Cope 1873 [synonym]
Invalid names: Hypertragulinae [empty]
Fm. †Protoceratidae Marsh 1891 [protoceratid]
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G. †Calops Marsh 1894
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Calops consors Marsh 1897
Calops cristatus Marsh 1894
G. †Protoceras Marsh 1891
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Protoceras celer Marsh 1891
Protoceras comptus Marsh 1894
Protoceras nasutus Marsh 1897
G. †Pseudoprotoceras Cook 1934
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Invalid names: Cameloidea [empty], Oreodontoidea Gill 1872 [empty]
Subor. Suina Gray 1868
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Fm. Tayassuidae Palmer 1897 [peccary]
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G. †Perchoerus Leidy 1869
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Perchoerus minor Cook 1922
Perchoerus nanus Marsh 1894
Perchoerus probus Leidy 1856
Invalid names: Ancodonta Matthew [empty], Palaeodonta Matthew [empty]