Latitudinal range: 42.0° to 46.2°

Found in 5 samples

United States: Gidley Quarry (Early Palaeocene), Douglass Quarry (Middle Palaeocene), Rock Bench Quarry (Early Palaeocene), Deadman Butte (Early Eocene), Ferris Formation (UW locality V-91004) (Early Palaeocene)

See also Proteutheria indet., Proteutheria indet. A, Proteutheria indet. B, Proteutheria indet. D, Proteutheria indet. E