Mammalia - Rodentia - Armintomyidae

Parent taxon: Castorimorpha according to M. C. McKenna and S. K. Bell 1997

Sister taxa: Castoroidea, Geomyoidea

Subtaxa: Armintomys

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Ecology: ground dwelling herbivore

Distribution: found only at CM Locality 1548 (Eocene of Wyoming)

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