Abundance: 0.39 to 29.82% (median 15.54%)

Latitudinal range: 41.6° to 51.1°

Habitats: (13) only

Found in 13 samples

Canada: Narcissus (Early Palaeocene), Who Nose (Early Palaeocene), Police Point (Middle Palaeocene)

United States: Gidley Quarry (Early Palaeocene), Silberling Quarry (Early Palaeocene), Scarritt Quarry (Early Palaeocene), Douglass Quarry (Middle Palaeocene), Rock Bench Quarry (Early Palaeocene), Cedar Point Quarry (Late Palaeocene), Shotgun (Carnegie Museum) (Middle Palaeocene), Chappo Type Locality (Late Palaeocene), Little Muddy Creek (Middle Palaeocene), School Well (Early Palaeocene)

See also Ptilodus gnomus, Ptilodus kummae, Ptilodus montanus, Ptilodus sp., Ptilodus sp. 1, Ptilodus sp. 2, Ptilodus sp. C, Ptilodus wyomingensis