Classification of Ivy 1990

G. †Acritoparamys Korth 1984
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Acritoparamys atavus Jepsen 1937
Acritoparamys atwateri Loomis 1907
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Invalid names: Paramys annectens Rose 1981 [synonym]
G. †Lophiparamys Wood 1962
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Lophiparamys murinus Matthew 1918
G. †Microparamys Wood 1959
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Microparamys minutus Wilson 1937
G. †Paramys Leidy 1871
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Paramys pycnus Ivy 1990
Fm. †Sciuravidae Miller and Gidley 1918
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G. †Sciuravus Marsh 1871
G. †Knightomys Gazin 1961
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Knightomys cremneus Ivy 1990
Knightomys depressus Loomis 1907
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Invalid names: Microparamys cathedralis Wood 1962 [synonym], Microparamys lysitensis Wood 1962 [synonym]
Knightomys minor Wood 1965
Knightomys senior Gazin 1952
G. †Reithroparamys Matthew 1920
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Paramys copei Loomis 1907
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Invalid names: Paramys bicuspis Loomis 1907 [synonym], Paramys major Loomis 1907 [synonym], Paramys primaevus Loomis 1907 [synonym], Paramys quadratus Loomis 1907 [synonym]