Classification of McGrew 1941
Fm. †Allomyidae Marsh 1877
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Fm. Aplodontidae Brandt 1855 [mountain beaver]
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G. †Meniscomys Cope 1878
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†Meniscomys hippodus Cope 1878
Invalid names: Protogaulus Riggs 1899 [synonym]
Fm. †Mylagaulidae Cope 1881
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