Abundance: 0.15 to 0.42% (median 0.30%)

Latitudinal range: 36.8° to 43.4°

Habitats: (3) only

Found in 3 samples

United States: Quartz Basin (UOloc 2465) (Middle Miocene), Whisenhunt Quarry (Late Miocene), WaKeeney (UM-K6-59) (Late Miocene)

See also Macrognathomys gemmacollis, Macrognathomys sp.