Latitudinal range: 42.2° to 54.8°

Found in 4 samples

Canada: Swan Hills Locality 1 (Late Palaeocene)

United States: Princeton Quarry (Late Palaeocene), Chappo Type Locality (Late Palaeocene), Divide Quarry (Middle Palaeocene)

See also Neoplagiaulax, Neoplagiaulax grangeri, Neoplagiaulax hunteri, Neoplagiaulax jepi, Neoplagiaulax kremnus, Neoplagiaulax mckennai, Neoplagiaulax nelsoni, Neoplagiaulax sp.