Mammalia - Rodentia - Cricetidae

Parent taxon: Sigmodontinae according to N. J. Czaplewski et al. 2002

Sister taxa: Abrothrix, Bensonomys, Chelemys, Delomys, Euneomys, Geoxus, Holochilus, Ichthyomyini, Irenomys, Juliomys, Lundomys, Nectomys, Oligoryzomys, Oryzomyalia, Rhipidomys, Scolomys, Sigmodontini, Thomasomys, Wiedomyini

Subtaxa: Reithrodontomys fulvescens, Reithrodontomys galushai, Reithrodontomys humulis, Reithrodontomys megalotis, Reithrodontomys montanus, Reithrodontomys moorei, Reithrodontomys pratincola, Reithrodontomys rexroadensis, Reithrodontomys wetmorei

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Ecology: ground dwelling herbivore