Found in 7 samples

United States: Holly's Microsite (Late Palaeocene), UMMP SC-4 (Early Eocene), UMMP SC-54 (Early Eocene), UMMP SC-67 (Early Eocene), Shotgun (Carnegie Museum) (Middle Palaeocene), Big Multi Quarry (Late Palaeocene), Mark's Locality (Late Palaeocene)

See also Ectocion, Ectocion cedrus, Ectocion collinus, Ectocion mediotuber, Ectocion parvus, Ectocion sp., Ectocion superstes