Abundance: 0.49 to 39.12% (median 2.56%)

Latitudinal range: 41.6° to 54.8°

Habitats: (13) only

Found in 13 samples

Canada: Swan Hills Locality 1 (Late Palaeocene), Who Nose (Early Palaeocene), Police Point (Middle Palaeocene)

United States: Purgatory Hill (Early Palaeocene), Gidley Quarry (Early Palaeocene), Scarritt Quarry (Early Palaeocene), Douglass Quarry (Middle Palaeocene), Cedar Point Quarry (Late Palaeocene), Princeton Quarry (Late Palaeocene), Chappo Type Locality (Late Palaeocene), Little Muddy Creek (Middle Palaeocene), Hiatt (Early Palaeocene), Divide Quarry (Middle Palaeocene)

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