†subfamily Meniscomyinae Rensberger 1981 (mountain beaver)

Mammalia - Rodentia - Aplodontidae

Parent taxon: Aplodontidae according to B. Wang 1987

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

Subtaxa: Meniscomys Promeniscomys Rudiomys

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Ecology: fossorial herbivore

Distribution:

• Miocene of United States (1: Oregon collection)

• Arikareean of United States (7: California, Montana, Nevada, Oregon, Wyoming)

• Oligocene of China (2), Mongolia (5), United States (4: Nebraska, Oregon, South Dakota)

Total: 19 collections each including a single occurrence

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