Abundance: 1.94 to 8.47% (median 2.81%)

Latitudinal range: 42.6° to 45.1°

Habitats: (8) only

Found in 8 samples

United States: Bear Creek (Late Palaeocene), Holly's Microsite (Late Palaeocene), UMMP SC-67 (Early Eocene), Green Locality (Early Eocene), Lightning Butte (Early Eocene), Deadman Butte (Early Eocene), Fantasia (Early Eocene), Jack Creek (Early Eocene)

See also Acritoparamys atavus, Acritoparamys atwateri, Acritoparamys francesi, Acritoparamys wyomingensis