From editor or global species database
Type locality Reported by White (1886) as "Wasatch strata, near Wales, Utah; and also at several other localities in equivalent strata in the Wasatch Mountains, east of San Pete Valley". However, according to La Rocque (1960), there are no lacustrine deposits at this locality. After Spieker (1946), the fossils reported by White variably derive from Price River, North Horn and Flagstaff formations (Campanian-Paleocene). [details]