†subfamily Meniscomyinae Rensberger 1981 (mountain beaver)

Mammalia - Rodentia - Aplodontidae

Parent taxon: Aplodontidae according to B. Wang 1987

Sister taxa: Allomyinae, Ameniscomys, Ansomyinae, Aplodontia, Brachygaulus, Disallomys, Leptoromys, Liodontia, Lophallomys, Ninamys, Oligopetes, Paracitellus, Plesispermophilus, Prosciurinae, Prosciurus, Pseudaplodon, Sciurodon, Sewelleladon, Tardontia, Trigonomys

Subtaxa: Meniscomys Niglarodon Promeniscomys Rudiomys

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Ecology: fossorial herbivore

Distribution:

• Miocene of United States (1: Oregon collection)

• Arikareean of United States (15: Idaho, Montana, Nevada, Oregon, Wyoming)

• Oligocene of China (2), Mongolia (5), United States (7: California, Nebraska, Oregon, South Dakota)

Total: 30 collections including 36 occurrences

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