Replacement name for Helix occidentalis Meek & Hayden, 1857, non Récluz, 1845. [details]
"Estuary beds, near mouth of Judith River", Montana, USA; Judith River Fm., Campanian, Late Cretaceous [details]
"mouth of Judith River", Montana, United States [details]
White River badlands, Oglala Lakota County, South Dakota, United States; White River Formation, late Eocene to ... [details]
Fort Berthold Indian Reservation (Fort Berthold), North Dakota, United States; Fort Union Formation, Paleocene [details]
White River badlands, Oglala Lakota County, South Dakota, United States; White River Formation, late Eocene to ... [details]
"Near the mouth of Grand River on the Upper Missouri", Montana, USA; Judith River Fm., Campanian, Late Cretaceous [details]
"Near the mouth of Grand River on the Upper Missouri", Montana, USA; Judith River Fm., Campanian, Late Cretaceous [details]