Classification of Johnson 1966

Or. Insectivora Bowdich 1821 [insectivoran]
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Fm. Erinaceidae Fischer von Waldheim 1817 [hedgehog]
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G. †Geolabis Cope 1884
Fm. †Leptictidae Gill 1872
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G. †Ictops Leidy 1868
Fm. Soricidae Fischer 1814 [shrew]
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G. †Domnina Cope 1873
Fm. Talpidae Fischer de Waldheim 1817 [mole]
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G. †Proscalops Matthew 1901
Or. Primates Linnaeus 1758 [primate]
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Fm. †Apatemyidae Matthew 1909
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G. †Sinclairella Jepsen 1934
Or. Rodentia Bowdich 1821 [rodent]
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Fm. Aplodontidae Brandt 1855 [mountain beaver]
Fm. Castoridae Gray 1821 [beaver]
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G. †Agnotocastor Stirton 1935
Fm. Cricetidae Fischer von Waldheim 1817
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G. †Eumys Leidy 1856
G. †Scottimus Wood 1937
Fm. †Eomyidae Winge 1887
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G. †Adjidaumo Hay 1899
G. †Paradjidaumo Burke 1934
Fm. †Eutypomyidae Miller and Gidley 1918
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G. †Eutypomys Matthew 1905
Fm. Geomyidae Bonaparte 1845 [pocket gopher]
Fm. Heteromyidae Gray 1868
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G. †Heliscomys Cope 1873
Fm. Sciuridae Gray 1821 [squirrel]
Fm. †Ischyromyidae Alston 1876
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G. †Ischyromys Leidy 1856
G. †Pelycomys Galbreath 1953
G. †Prosciurus Matthew 1903
Or. Lagomorpha Brandt 1885
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Fm. Leporidae Fischer de Waldheim 1817 [rabbit]
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Subfm. †Archaeolaginae
G. †Megalagus Walker 1931
G. †Palaeolagus Leidy 1856
Or. Artiodactyla Owen 1848 [even-toed ungulate]
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Fm. †Hypertragulidae Cope 1879
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G. †Hypertragulus Cope 1874
G. †Hypisodus Cope 1873
G. †Leptomeryx Leidy 1853
Or. Perissodactyla Owen 1848 [odd-toed ungulate]
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Fm. Equidae Gray 1821 [horse]
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G. †Mesohippus Marsh 1875
Or. Marsupialia Illiger 1811 [marsupial]
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Fm. Didelphidae Gray 1821 [opossum]
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G. †Peratherium Aymard 1850