Latitudinal range: 27.5° to 44.1°

Found in 6 samples

United States: Buck Spring Quarries (B-2 horizon) (Early Eocene), Lightning Butte (Early Eocene), Someday (Early Eocene), Deadman Butte (Early Eocene), Jack Creek (Early Eocene), Casa Blanca (Middle Eocene)

See also Herpetotherium, Herpetotherium fugax, Herpetotherium knighti, Herpetotherium sp., Herpetotherium valens, Herpetotherium youngi