Abundance: 0.15 to 0.42%

Latitudinal range: 39.1° to 43.4°

Habitats: (2) only

Found in two samples

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

M1 length	0.94 mm	N = 1	Shotwell 1968
M1 width	0.86 mm	N = 1	Shotwell 1968
P4 length	0.46 mm	N = 1	Shotwell 1968
P4 width	0.57 mm	N = 1	Shotwell 1968

See also Macrognathomys, Macrognathomys gemmacollis